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Weiye Loh

Evidence: A Seductive but Slippery Concept - The Scientist - Magazine of the Life Sciences - 0 views

  • Much of what we know is wrong—or at least not definitively established to be right.
  • there were different schools of evidence-based medicine, reminding me of the feuding schools of psychoanalysis. For some it meant systematic reviews of well-conducted trials. For others it meant systematically searching for all evidence and then combining the evidence that passed a predefined quality hurdle. Quantification was essential for some but unimportant for others, and the importance of “clinical experience” was disputed.
  • There was also a backlash. Many doctors resented bitterly the implication that medicine had not always been based on evidence, while others saw unworthy people like statisticians and epidemiologists replacing the magnificence of clinicians. Many doctors thought evidence-based medicine a plot driven by insurance companies, politicians, and administrators in order to cut costs.
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  • The discomfort of many clinicians comes from the fact that the data are derived mainly from clinical trials, which exclude the elderly and people with multiple problems. Yet in the “real world” of medicine, particularly general practice, most patients are elderly and most have multiple problems. So can the “evidence” be applied to these patients? Unthinking application of multiple evidence-based guidelines may cause serious problems, says Mike Rawlins, chairman of NICE.
  • There has always been anxiety that the zealots would insist evidence was all that was needed to make a decision, and in its early days NICE seemed to take this line. Critics quickly pointed out, however, that patients had things called values, as did clinicians, and that clinicians and patients needed to blend their values with the evidence in a way that was often a compromise.
  • Social scientists have tended to be wary of the reductionist approach of evidence-based medicine and have wanted a much broader range of information to be admissible.
  • Evidence-based medicine has been at its most confident when evaluating drug treatments, but many interventions in health care are far more complex than simply prescribing a drug. Insisting on randomized trials to evaluate these interventions may not only be inappropriate, but also misleading. Interventions may be stamped “ineffective” by the hardliners when they actually might offer substantial benefits. Then there is the constant confusion between “evidence of absence of effectiveness” with “absence of evidence of effectiveness”—two very different things.
  • even some of the strongest proponents of evidence-based medicine have become uneasy, as we have increasing evidence that drug companies have managed to manipulate data. In the heartland of evidence-based medicine—drug trials—the “evidence” may be unreliable and misleading.
  • All this doesn’t mean that evidence-based medicine should be abandoned. It means, rather, that we must never forget the complex relationship between evidence and truth.
Weiye Loh

The Fake Scandal of Climategate - 0 views

  • The most comprehensive inquiry was the Independent Climate Change Email Review led by Sir Muir Russell, commissioned by UEA to examine the behaviour of the CRU scientists (but not the scientific validity of their work). It published its final report in July 2010
  • It focused on what the CRU scientists did, not what they said, investigating the evidence for and against each allegation. It interviewed CRU and UEA staff, and took 111 submissions including one from CRU itself. And it also did something the media completely failed to do: it attempted to put the actions of CRU scientists into context.
    • Weiye Loh
       
      Data, in the form of email correspondence, requires context to be interpreted "objectively" and "accurately" =)
  • The Review went back to primary sources to see if CRU really was hiding or falsifying their data. It considered how much CRU’s actions influenced the IPCC’s conclusions about temperatures during the past millennium. It commissioned a paper by Dr Richard Horton, editor of The Lancet, on the context of scientific peer review. And it asked IPCC Review Editors how much influence individuals could wield on writing groups.
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  • Many of these are things any journalist could have done relatively easily, but few ever bothered to do.
  • the emergence of the blogosphere requires significantly more openness from scientists. However, providing the details necessary to validate large datasets can be difficult and time-consuming, and how FoI laws apply to research is still an evolving area. Meanwhile, the public needs to understand that science cannot and does not produce absolutely precise answers. Though the uncertainties may become smaller and better constrained over time, uncertainty in science is a fact of life which policymakers have to deal with. The chapter concludes: “the Review would urge all scientists to learn to communicate their work in ways that the public can access and understand”.
  • email is less formal than other forms of communication: “Extreme forms of language are frequently applied to quite normal situations by people who would never use it in other communication channels.” The CRU scientists assumed their emails to be private, so they used “slang, jargon and acronyms” which would have been more fully explained had they been talking to the public. And although some emails suggest CRU went out of their way to make life difficult for their critics, there are others which suggest they were bending over backwards to be honest. Therefore the Review found “the e-mails cannot always be relied upon as evidence of what actually occurred, nor indicative of actual behaviour that is extreme, exceptional or unprofessional.” [section 4.3]
  • when put into the proper context, what do these emails actually reveal about the behaviour of the CRU scientists? The report concluded (its emphasis):
  • we find that their rigour and honesty as scientists are not in doubt.
  • we did not find any evidence of behaviour that might undermine the conclusions of the IPCC assessments.
  • “But we do find that there has been a consistent pattern of failing to display the proper degree of openness, both on the part of the CRU scientists and on the part of the UEA, who failed to recognize not only the significance of statutory requirements but also the risk to the reputation of the University and indeed, to the credibility of UK climate science.” [1.3]
  • The argument that Climategate reveals an international climate science conspiracy is not really a very skeptical one. Sure, it is skeptical in the weak sense of questioning authority, but it stops there. Unlike true skepticism, it doesn’t go on to objectively examine all the evidence and draw a conclusion based on that evidence. Instead, it cherry-picks suggestive emails, seeing everything as incontrovertible evidence of a conspiracy, and concludes all of mainstream climate science is guilty by association. This is not skepticism; this is conspiracy theory.
    • Weiye Loh
       
      How then do we know that we have examined ALL the evidence? What about the context of evidence then? 
  • The media dropped the ball There is a famous quotation attributed to Mark Twain: “A lie can travel halfway around the world while the truth is putting on its shoes.” This is more true in the internet age than it was when Mark Twain was alive. Unfortunately, it took months for the Climategate inquiries to put on their shoes, and by the time they reported, the damage had already been done. The media acted as an uncritical loudspeaker for the initial allegations, which will now continue to circulate around the world forever, then failed to give anywhere near the same amount of coverage to the inquiries clearing the scientists involved. For instance, Rupert Murdoch’s The Australian published no less than 85 stories about Climategate, but not one about the Muir Russell inquiry.
  • Even the Guardian, who have a relatively good track record on environmental reporting and were quick to criticize the worst excesses of climate conspiracy theorists, could not resist the lure of stolen emails. As George Monbiot writes, journalists see FoI requests and email hacking as a way of keeping people accountable, rather than the distraction from actual science which they are to scientists. In contrast, CRU director Phil Jones says: “I wish people would spend as much time reading my scientific papers as they do reading my e-mails.”
  • This is part of a broader problem with climate change reporting: the media holds scientists to far higher standards than it does contrarians. Climate scientists have to be right 100% of the time, but contrarians apparently can get away with being wrong nearly 100% of the time. The tiniest errors of climate scientists are nitpicked and blown out of all proportion, but contrarians get away with monstrous distortions and cherry-picking of evidence. Around the same time The Australian was bashing climate scientists, the same newspaper had no problem publishing Viscount Monckton’s blatant misrepresentations of IPCC projections (not to mention his demonstrably false conspiracy theory that the Copenhagen summit was a plot to establish a world government).
  • In the current model of environmental reporting, the contrarians do not lose anything by making baseless accusations. In fact, it is in their interests to throw as much mud at scientists as possible to increase the chance that some of it will stick in the public consciousness. But there is untold damage to the reputation of the scientists against whom the accusations are being made. We can only hope that in future the media will be less quick to jump to conclusions. If only editors and producers would stop and think for a moment about what they’re doing: they are playing with the future of the planet.
  • As worthy as this defense is, surely this is the kind of political bun-fight SkS has resolutely stayed away from since its inception. The debate can only become a quagmire of competing claims, because this is part of an adversarial process that does not depend on, or even require, scientific evidence. Only by sticking resolutely to the science and the advocacy of the scientific method can SkS continue to avoid being drowned in the kind of mud through which we are obliged to wade elsewhere.
  • I disagree with gp. It is past time we all got angry, very angry, at what these people have done and continue to do. Dispassionate science doesn't cut it with the denial industry or with the media (and that "or" really isn't there). It's time to fight back with everything we can throw back at them.
  • The fact that three quick fire threads have been run on Climatgate on this excellent blog in the last few days is an indication that Climategate (fairly or not) has does serious damage to the cause of AGW activism. Mass media always overshoots and exaggerates. The AGW alarmists had a very good run - here in Australia protagonists like Tim Flannery and our living science legend Robin Williams were talking catastrophe - the 10 year drought was definitely permanent climate change - rivers might never run again - Robin (100 metre sea level rise) Williams refused to even read the Climategate emails. Climategate swung the pendumum to the other extreme - the scientists (nearly all funded by you and me) were under the pump. Their socks rubbed harder on their sandals as they scrambled for clear air. Cries about criminal hackers funded by big oil, tobacco, rightist conspirators etc were heard. Panchuri cried 'voodoo science' as he denied ever knowing about objections to the preposterous 2035 claim. How things change in a year. The drought is broken over most of Australia - Tim Flannery has gone quiet and Robin Williams is airing a science journo who says that AGW scares have been exaggerated. Some balance might have been restored as the pendulum swung, and our hard working misunderstood scientist bretheren will take more care with their emails in future.
  • "Perhaps a more precise description would be that a common pattern in global warming skeptic arguments is to focus on narrow pieces of evidence while ignoring other evidence that contradicts their argument." And this is the issue the article discuss, but in my opinion this article is in guilt of this as well. It focus on a narrow set of non representative claims, claims which is indeed pure propaganda by some skeptics, however the article also suggest guilt buy association and as such these propaganda claims then gets attributed to the be opinions of the entire skeptic camp. In doing so, the OP becomes guilty of the very same issue the OP tries to address. In other words, the issue I try to raise is not about the exact numbers or figures or any particular facts but the fact that the claim I quoted is obvious nonsense. It is nonsense because it a sweeping statement with no specifics and as such it is an empty statement and means nothing. A second point I been thinking about when reading this article is why should scientist be granted immunity to dirty tricks/propaganda in a political debate? Is it because they speak under the name of science? If that is the case, why shall we not grant the same right to other spokesmen for other organization?
    • Weiye Loh
       
      The aspiration to examine ALL evidence is again called into question here. Is it really possible to examine ALL evidence? Even if we have examined them, can we fully represent our examination? From our lab, to the manuscript, to the journal paper, to the news article, to 140characters tweets?
Weiye Loh

Mystery and Evidence - NYTimes.com - 0 views

  • a very natural way for atheists to react to religious claims: to ask for evidence, and reject these claims in the absence of it. Many of the several hundred comments that followed two earlier Stone posts “Philosophy and Faith” and “On Dawkins’s Atheism: A Response,” both by Gary Gutting, took this stance. Certainly this is the way that today’s “new atheists”  tend to approach religion. According to their view, religions — by this they mean basically Christianity, Judaism and Islam and I will follow them in this — are largely in the business of making claims about the universe that are a bit like scientific hypotheses. In other words, they are claims — like the claim that God created the world — that are supported by evidence, that are proved by arguments and tested against our experience of the world. And against the evidence, these hypotheses do not seem to fare well.
  • But is this the right way to think about religion? Here I want to suggest that it is not, and to try and locate what seem to me some significant differences between science and religion
  • To begin with, scientific explanation is a very specific and technical kind of knowledge. It requires patience, pedantry, a narrowing of focus and (in the case of the most profound scientific theories) considerable mathematical knowledge and ability. No-one can understand quantum theory — by any account, the most successful physical theory there has ever been — unless they grasp the underlying mathematics. Anyone who says otherwise is fooling themselves.
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  • Religious belief is a very different kind of thing. It is not restricted only to those with a certain education or knowledge, it does not require years of training, it is not specialized and it is not technical. (I’m talking here about the content of what people who regularly attend church, mosque or synagogue take themselves to be thinking; I’m not talking about how theologians interpret this content.)
  • while religious belief is widespread, scientific knowledge is not. I would guess that very few people in the world are actually interested in the details of contemporary scientific theories. Why? One obvious reason is that many lack access to this knowledge. Another reason is that even when they have access, these theories require sophisticated knowledge and abilities, which not everyone is capable of getting.
  • most people aren’t deeply interested in science, even when they have the opportunity and the basic intellectual capacity to learn about it. Of course, educated people who know about science know roughly what Einstein, Newton and Darwin said. Many educated people accept the modern scientific view of the world and understand its main outlines. But this is not the same as being interested in the details of science, or being immersed in scientific thinking.
  • This lack of interest in science contrasts sharply with the worldwide interest in religion. It’s hard to say whether religion is in decline or growing, partly because it’s hard to identify only one thing as religion — not a question I can address here. But it’s pretty obvious that whatever it is, religion commands and absorbs the passions and intellects of hundreds of millions of people, many more people than science does. Why is this? Is it because — as the new atheists might argue — they want to explain the world in a scientific kind of way, but since they have not been properly educated they haven’t quite got there yet? Or is it because so many people are incurably irrational and are incapable of scientific thinking? Or is something else going on?
  • Some philosophers have said that religion is so unlike science that it has its own “grammar” or “logic” and should not be held accountable to the same standards as scientific or ordinary empirical belief. When Christians express their belief that “Christ has risen,” for example, they should not be taken as making a factual claim, but as expressing their commitment to what Wittgenstein called a certain “form of life,” a way of seeing significance in the world, a moral and practical outlook which is worlds away from scientific explanation.
  • This view has some merits, as we shall see, but it grossly misrepresents some central phenomena of religion. It is absolutely essential to religions that they make certain factual or historical claims. When Saint Paul says “if Christ is not risen, then our preaching is in vain and our faith is in vain” he is saying that the point of his faith depends on a certain historical occurrence.
  • Theologians will debate exactly what it means to claim that Christ has risen, what exactly the meaning and significance of this occurrence is, and will give more or less sophisticated accounts of it. But all I am saying is that whatever its specific nature, Christians must hold that there was such an occurrence. Christianity does make factual, historical claims. But this is not the same as being a kind of proto-science. This will become clear if we reflect a bit on what science involves.
  • The essence of science involves making hypotheses about the causes and natures of things, in order to explain the phenomena we observe around us, and to predict their future behavior. Some sciences — medical science, for example — make hypotheses about the causes of diseases and test them by intervening. Others — cosmology, for example — make hypotheses that are more remote from everyday causes, and involve a high level of mathematical abstraction and idealization. Scientific reasoning involves an obligation to hold a hypothesis only to the extent that the evidence requires it. Scientists should not accept hypotheses which are “ad hoc” — that is, just tailored for one specific situation but cannot be generalized to others. Most scientific theories involve some kind of generalization: they don’t just make claims about one thing, but about things of a general kind. And their hypotheses are designed, on the whole, to make predictions; and if these predictions don’t come out true, then this is something for the scientists to worry about.
  • Religions do not construct hypotheses in this sense. I said above that Christianity rests upon certain historical claims, like the claim of the resurrection. But this is not enough to make scientific hypotheses central to Christianity, any more than it makes such hypotheses central to history. It is true, as I have just said, that Christianity does place certain historical events at the heart of their conception of the world, and to that extent, one cannot be a Christian unless one believes that these events happened. Speaking for myself, it is because I reject the factual basis of the central Christian doctrines that I consider myself an atheist. But I do not reject these claims because I think they are bad hypotheses in the scientific sense. Not all factual claims are scientific hypotheses. So I disagree with Richard Dawkins when he says “religions make existence claims, and this means scientific claims.”
  • Taken as hypotheses, religious claims do very badly: they are ad hoc, they are arbitrary, they rarely make predictions and when they do they almost never come true. Yet the striking fact is that it does not worry Christians when this happens. In the gospels Jesus predicts the end of the world and the coming of the kingdom of God. It does not worry believers that Jesus was wrong (even if it causes theologians to reinterpret what is meant by ‘the kingdom of God’). If Jesus was framing something like a scientific hypothesis, then it should worry them. Critics of religion might say that this just shows the manifest irrationality of religion. But what it suggests to me is that that something else is going on, other than hypothesis formation.
  • Religious belief tolerates a high degree of mystery and ignorance in its understanding of the world. When the devout pray, and their prayers are not answered, they do not take this as evidence which has to be weighed alongside all the other evidence that prayer is effective. They feel no obligation whatsoever to weigh the evidence. If God does not answer their prayers, well, there must be some explanation of this, even though we may never know it. Why do people suffer if an omnipotent God loves them? Many complex answers have been offered, but in the end they come down to this: it’s a mystery.
  • Science too has its share of mysteries (or rather: things that must simply be accepted without further explanation). But one aim of science is to minimize such things, to reduce the number of primitive concepts or primitive explanations. The religious attitude is very different. It does not seek to minimize mystery. Mysteries are accepted as a consequence of what, for the religious, makes the world meaningful.
  • Religion is an attempt to make sense of the world, but it does not try and do this in the way science does. Science makes sense of the world by showing how things conform to its hypotheses. The characteristic mode of scientific explanation is showing how events fit into a general pattern.
  • Religion, on the other hand, attempts to make sense of the world by seeing a kind of meaning or significance in things. This kind of significance does not need laws or generalizations, but just the sense that the everyday world we experience is not all there is, and that behind it all is the mystery of God’s presence. The believer is already convinced that God is present in everything, even if they cannot explain this or support it with evidence. But it makes sense of their life by suffusing it with meaning. This is the attitude (seeing God in everything) expressed in George Herbert’s poem, “The Elixir.” Equipped with this attitude, even the most miserable tasks can come to have value: Who sweeps a room as for Thy laws/ Makes that and th’ action fine.
  • None of these remarks are intended as being for or against religion. Rather, they are part of an attempt (by an atheist, from the outside) to understand what it is. Those who criticize religion should have an accurate understanding of what it is they are criticizing. But to understand a world view, or a philosophy or system of thought, it is not enough just to understand the propositions it contains. You also have to understand what is central and what is peripheral to the view. Religions do make factual and historical claims, and if these claims are false, then the religions fail. But this dependence on fact does not make religious claims anything like hypotheses in the scientific sense. Hypotheses are not central. Rather, what is central is the commitment to the meaningfulness (and therefore the mystery) of the world.
  • while religious thinking is widespread in the world, scientific thinking is not. I don’t think that this can be accounted for merely in terms of the ignorance or irrationality of human beings. Rather, it is because of the kind of intellectual, emotional and practical appeal that religion has for people, which is a very different appeal from the kind of appeal that science has. Stephen Jay Gould once argued that religion and science are “non-overlapping magisteria.” If he meant by this that religion makes no factual claims which can be refuted by empirical investigations, then he was wrong. But if he meant that religion and science are very different kinds of attempt to understand the world, then he was certainly right.
  •  
    Mystery and Evidence By TIM CRANE
Weiye Loh

Evaluating The Evidence for Cell Phones and WiFi « Critical Thinking « Skepti... - 0 views

  • he “weight of evidence” approach to evaluation of causality is often vilified by cell phone and WiFi scare mongers as being an inadequate way to judge the evidence – often because it disagrees with their own sentiments about the science.  If you can’t disqualify the evidence, then you can go after the method of evaluation and disqualify that, right?  Of course, the weight of evidence approach is often portrayed as a dumbshow of putting all the “positive” trials on one side of the scale and all of the “negative” trials on the other and taking the difference in mass as the evidence.  This is how Dr. Phillips characterised it in his paper on electromagnetic fields and DNA damage, as well as his appearance on CBC Radio.  Of course, the procedure is much more like a systematic review, where all of the papers, regardless of their outcomes, are weighed for their quality. (The higher quality studies will have good internal and external validity, proper blinding and randomisation, large enough sample size, proper controls and good statistical analysis; as well as being reproduced by independent investigators.) Then they are tallied and a rational conclusion is offered as to the most likely state of the evidence (of course, it is much more involved than I am stating, but suffice it to say, it does not involve a scale.)   This is standard operating procedure and, in fact, is what we all do when we are evaluating evidence: we decide which studies are good and we pool the evidence before we make a decision.
  •  
    n many discussions of the "dangers" of WiFi and cell phones, the precautionary principle is evoked. It is the idea that we have "an obligation, if the level of harm may be high, for action to prevent or minimise such harm even when the absence of scientific certainty makes it difficult to predict the likelihood of harm occurring, or the level of harm should it occur."  It is important to note that the precautionary principle or approach is required when we do not have a scientific consensus or if we have a lack of scientific certainty.  It is used often in European regulation of potential health and environmental hazards.  "Scientific certainty" is an important clause here, because it does not mean 100% certainty. Science can never give that absolute a result and if we required 100% certainty of no risk, we would not walk out our front doors or even get out of bed, lest we have a mishap.
Weiye Loh

Adventures in Flay-land: Scepticism versus Denialism - Delingpole Part II - 0 views

  • wrote a piece about James Delingpole's unfortunate appearance on the BBC program Horizon on Monday. In that piece I refered to one of his own Telegraph articles in which he criticizes renowned sceptic Dr Ben Goldacre for betraying the principles of scepticism in his regard of the climate change debate. That article turns out to be rather instructional as it highlights perfectly the difference between real scepticism and the false scepticism commonly described as denialism.
  • It appears that James has tremendous respect for Ben Goldacre, who is a qualified medical doctor and has written a best-selling book about science scepticism called Bad Science and continues to write a popular Guardian science column. Here's what Delingpole has to say about Dr Goldacre: Many of Goldacre’s campaigns I support. I like and admire what he does. But where I don’t respect him one jot is in his views on ‘Climate Change,’ for they jar so very obviously with supposed stance of determined scepticism in the face of establishment lies.
  • Scepticism is not some sort of rebellion against the establishment as Delingpole claims. It is not in itself an ideology. It is merely an approach to evaluating new information. There are varying definitions of scepticism, but Goldacre's variety goes like this: A sceptic does not support or promote any new theory until it is proven to his or her satisfaction that the new theory is the best available. Evidence is examined and accepted or discarded depending on its persuasiveness and reliability. Sceptics like Ben Goldacre have a deep appreciation for the scientific method of testing a hypothesis through experimentation and are generally happy to change their minds when the evidence supports the opposing view. Sceptics are not true believers, but they search for the truth. Far from challenging the established scientific consensus, Goldacre in Bad Science typcially defends the scientific consensus against alternative medical views that fall back on untestable positions. In science the consensus is sometimes proven wrong, and while this process is imperfect it eventually results in the old consensus being replaced with a new one.
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  • So the question becomes "what is denialism?" Denialism is a mindset that chooses to deny reality in order to avoid an uncomfortable truth. Denialism creates a false sense of truth through the subjective selection of evidence (cherry picking). Unhelpful evidence is rejected and excuses are made, while supporting evidence is accepted uncritically - its meaning and importance exaggerated. It is a common feature of denialism to claim the existence of some sort of powerful conspiracy to suppress the truth. Rejection by the mainstream of some piece of evidence supporting the denialist view, no matter how flawed, is taken as further proof of the supposed conspiracy. In this way the denialist always has a fallback position.
  • Delingpole makes the following claim: Whether Goldacre chooses to ignore it or not, there are many, many hugely talented, intelligent men and women out there – from mining engineer turned Hockey-Stick-breaker Steve McIntyre and economist Ross McKitrick to bloggers Donna LaFramboise and Jo Nova to physicist Richard Lindzen….and I really could go on and on – who have amassed a body of hugely powerful evidence to show that the AGW meme which has spread like a virus around the world these last 20 years is seriously flawed.
  • So he mentions a bunch of people who are intelligent and talented and have amassed evidence to the effect that the consensus of AGW (Anthropogenic Global Warming) is a myth. Should I take his word for it? No. I am a sceptic. I will examine the evidence and the people behind it.
  • MM claims that global temperatures are not accelerating. The claims have however been roundly disproved as explained here. It is worth noting at this point that neither man is a climate scientist. McKitrick is an economist and McIntyre is a mining industry policy analyst. It is clear from the very detailed rebuttal article that McIntrye and McKitrick have no qualifications to critique the earlier paper and betray fundamental misunderstandings of methodologies employed in that study.
  • This Wikipedia article explains in better laymens terms how the MM claims are faulty.
  • It is difficult for me to find out much about blogger Donna LaFrambois. As far as I can see she runs her own blog at http://nofrakkingconsensus.wordpress.com and is the founder of another site here http://www.noconsensus.org/. It's not very clear to me what her credentials are
  • She seems to be a critic of the so-called climate bible, a comprehensive report by the UN Intergovernmental Panel on Climate Change (IPCC)
  • I am familiar with some of the criticisms of this panel. Working Group 2 famously overstated the estimated rate of disappearance of the Himalayan glacier in 2007 and was forced to admit the error. Working Group 2 is a panel of biologists and sociologists whose job is to evaluate the impact of climate change. These people are not climate scientists. Their report takes for granted the scientific basis of climate change, which has been delivered by Working Group 1 (the climate scientists). The science revealed by Working Group 1 is regarded as sound (of course this is just a conspiracy, right?) At any rate, I don't know why I should pay attention to this blogger. Anyone can write a blog and anyone with money can own a domain. She may be intelligent, but I don't know anything about her and with all the millions of blogs out there I'm not convinced hers is of any special significance.
  • Richard Lindzen. Okay, there's information about this guy. He has a wiki page, which is more than I can say for the previous two. He is an atmospheric physicist and Professor of Meteorology at MIT.
  • According to Wikipedia, it would seem that Lindzen is well respected in his field and represents the 3% of the climate science community who disagree with the 97% consensus.
  • The second to last paragraph of Delingpole's article asks this: If  Goldacre really wants to stick his neck out, why doesn’t he try arguing against a rich, powerful, bullying Climate-Change establishment which includes all three British main political parties, the National Academy of Sciences, the Royal Society, the Prince of Wales, the Prime Minister, the President of the USA, the EU, the UN, most schools and universities, the BBC, most of the print media, the Australian Government, the New Zealand Government, CNBC, ABC, the New York Times, Goldman Sachs, Deutsche Bank, most of the rest of the City, the wind farm industry, all the Big Oil companies, any number of rich charitable foundations, the Church of England and so on?I hope Ben won't mind if I take this one for him (first of all, Big Oil companies? Are you serious?) The answer is a question and the question is "Where is your evidence?"
Weiye Loh

Science-Based Medicine » Skepticism versus nihilism about cancer and science-... - 0 views

  • I’m a John Ioannidis convert, and I accept that there is a lot of medical literature that is erroneous. (Just search for Dr. Ioannidis’ last name on this blog, and you’ll find copious posts praising him and discussing his work.) In fact, as I’ve pointed out, most medical researchers instinctively know that most new scientific findings will not hold up to scrutiny, which is why we rarely accept the results of a single study, except in unusual circumstances, as being enough to change practice. I also have pointed out many times that this is not necessarily a bad thing. Replication is key to verification of scientific findings, and more often than not provocative scientific findings are not replicated. Does that mean they shouldn’t be published?
  • As for pseudoscience, I’m half tempted to agree with Dr. Spector, but just not in the way he thinks. Unfortunately, over the last 20 years or so, there has been an increasing amount of pseudoscience in the medical literature in the form of “complementary and alternative medicine” (CAM) studies of highly improbable remedies or even virtually impossible ones (i.e., homeopathy). However, that does not appear to be what Dr. Spector is talking about, which is why I looked up his references. The second reference is to an SI article from 2009 entitled Science and Pseudoscience in Adult Nutrition Research and Practice. There, and only there, did I find out just what it is that Dr. Spector apparently means by “pseudoscience”: By pseudoscience, I mean the use of inappropriate methods that frequently yield wrong or misleading answers for the type of question asked. In nutrition research, such methods also often misuse statistical evaluations.
  • Dr. Spector doesn’t really know the difference between inadequately rigorous science and pseudoscience! Now, don’t get me wrong. I know that it’s not always easy to distinguish science from pseudoscience, especially at the fringes, but in general bad science has to go a lot further than Dr. Spector thinks to merit the the term “pseudoscience.” It is clear (to me, at least) from his articles that Dr. Spector throws around the term “pseudoscience” around rather more loosely than he should, using it as a pejorative for any clinical science less rigorous than a randomized, double-blind, placebo-controlled trial that meets FDA standards for approval of a drug (his pharma background coming to the fore, no doubt). Pseudoscience, Dr. Spector. You keep using that word. I do not think it means what you think it means. Indeed, I almost get the impression from his articles that Dr. Spector views any study that doesn’t reach FDA-level standards for drug approval to be pseudoscience.
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  • Medical science, when it works well, tends to progress from basic science, to small pilot studies, to larger randomized studies, and then–only then–to those big, rigorous, insanely expensive randomized, double-blind, placebo-controlled trials. Dr. Spector mentions hierarchies of evidence, but he seems to fall into a false dichotomy, namely that if it’s not Level I evidence, it’s crap. The problem is, as Mark pointed out, in medicine we often don’t have Level I evidence for many questions. Indeed, for some questions, we will never have Level I evidence. Clinical medicine involves making decisions in the midst of uncertainty, sometimes extreme uncertainty.
  • Dr. Spector then proceeds to paint a picture of reckless physicians proceeding on crappy studies to pump women full of hormones. Actually, it was more than a bit more complicated on than that. That was the time when I was in my medical training, and I remember the discussions we had regarding the strength (or lack thereof) of the epidemiological data and the lack of good RCTs looking at HRT. I also remember that nothing works as well to relieve menopausal symptoms as HRT, an observation we have been reminded of again since 2003, which is the year when the first big study came out implicating HRT in increasing the risk of breast cancer (more later).
  • I found a rather fascinating editorial in the New England Journal of Medicine from more than 20 years ago that discussed the state of the evidence back then with regard to estrogen and breast cancer: Evidence that estrogen increases the risk of breast cancer has been surprisingly difficult to obtain. Clinical and epidemiologic studies and studies in animals strongly suggest that endogenous estrogen plays a part in causing breast cancer. If so, exogenous estrogen should be a potent promoter of breast cancer. Although more than 20 case–control and prospective studies of the relation of breast cancer and noncontraceptive estrogen use have failed to demonstrate the expected association, relatively few women in these studies used estrogen for extended periods. Studies of the use of diethylstilbestrol and oral contraceptives suggest that a long exposure or latency may be necessary to show any association between hormone use and breast cancer. In the Swedish study, only six years of follow-up was needed to demonstrate an increased risk of breast cancer with the postmenopausal use of estradiol. It should be noted, however, that half the women in the subgroup that provided detailed data on the duration of hormone use had taken estrogen for many years before their base-line prescription status was defined. The duration of estrogen exposure in these women before the diagnosis of breast cancer was probably seriously underestimated; a short latency cannot be attributed to estradiol on the basis of these data. Other recent studies of the use of noncontraceptive estrogen suggest a slightly increased risk of breast cancer after 15 to 20 years’ use.
  • even now, the evidence is conflicting regarding HRT and breast cancer, with the preponderance of evidence suggesting that mixed HRT (estrogen and progestin) significantly increases the risk of breast cancer, while estrogen-alone HRT very well might not increase the risk of breast cancer at all or (more likely) only very little. Indeed, I was just at a conference all day Saturday where data demonstrating this very point were discussed by one of the speakers. None of this stops Dr. Spector from categorically labeling estrogen as a “carcinogen that causes breast cancers that kill women.” Maybe. Maybe not. It’s actually not that clear. The problem, of course, is that, consistent with the first primary reports of WHI results, the preponderance of evidence finding health risks due to HRT have indicted the combined progestin/estrogen combinations as unsafe.
Weiye Loh

What Is Skepticism? Week 3: Skepticism vs. Denial « Skepticism « Critical Thi... - 0 views

  • Everyone is a skeptic nowadays, or so it seems. From climate change to evolution to vaccination, large proportions of the population claim to be skeptical about many of the claims of mainstream science. So why are we, member of the skeptical community, not rejoicing?
  • A skeptic, in popular discourse, is simply someone who denies a particular claim. But true skepticism, as espoused by philosophers and scientists for millenia, is more an intellectual attitude than a position on a specific issue. A skeptic is someone who always demands sufficient evidence or reasons before accepting a claim. This skeptical attitude – its opposite is credulity – leads skeptics to reject as unfounded any claim that cannot withstand the rigours of the scientific method, which includes controlled experimental testing. The more extraordinary the claim, the more rigourously it must be tested before a skeptic will be willing to accept
  • skepticism does not always lead to denial. Extraordinary claims require extraordinary evidence, but sometimes that extraordinary evidence can be provided. Einstein’s theory of relativity, which holds that matter can change the very shape of space and time, is an extraordinary claim, yet it has stood up to the most demanding of scientific testing.
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  • let us turn to the climate change “skeptics”. Are they just being more demanding than us in their skepticism? After all, nothing in science is ever certain; some room for doubt always exists. For that doubt to warrant disbelief in the face of all the positive evidence, however, skeptics would require significant contrary evidence, or a plausible alternative theory which fit the data. But climate change deniers have not provided any such evidence or theory (theories involving variations in solar activity simply don’t fit the data). Nor have they shown significant inclination to provide such evidence, generally being content to gesture frantically at any minor mistake, no matter how irrelevant, in the climate change literature. In fact, in denying climate change, these “skeptics” find themselves committed to claims no less extraordinary than the ones they deny, yet with far less evidence.
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    Skepticism vs. Denial
Weiye Loh

Rationally Speaking: Are Intuitions Good Evidence? - 0 views

  • Is it legitimate to cite one’s intuitions as evidence in a philosophical argument?
  • appeals to intuitions are ubiquitous in philosophy. What are intuitions? Well, that’s part of the controversy, but most philosophers view them as intellectual “seemings.” George Bealer, perhaps the most prominent defender of intuitions-as-evidence, writes, “For you to have an intuition that A is just for it to seem to you that A… Of course, this kind of seeming is intellectual, not sensory or introspective (or imaginative).”2 Other philosophers have characterized them as “noninferential belief due neither to perception nor introspection”3 or alternatively as “applications of our ordinary capacities for judgment.”4
  • Philosophers may not agree on what, exactly, intuition is, but that doesn’t stop them from using it. “Intuitions often play the role that observation does in science – they are data that must be explained, confirmers or the falsifiers of theories,” Brian Talbot says.5 Typically, the way this works is that a philosopher challenges a theory by applying it to a real or hypothetical case and showing that it yields a result which offends his intuitions (and, he presumes, his readers’ as well).
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  • For example, John Searle famously appealed to intuition to challenge the notion that a computer could ever understand language: “Imagine a native English speaker who knows no Chinese locked in a room full of boxes of Chinese symbols (a data base) together with a book of instructions for manipulating the symbols (the program). Imagine that people outside the room send in other Chinese symbols which, unknown to the person in the room, are questions in Chinese (the input). And imagine that by following the instructions in the program the man in the room is able to pass out Chinese symbols which are correct answers to the questions (the output)… If the man in the room does not understand Chinese on the basis of implementing the appropriate program for understanding Chinese then neither does any other digital computer solely on that basis because no computer, qua computer, has anything the man does not have.” Should we take Searle’s intuition that such a system would not constitute “understanding” as good evidence that it would not? Many critics of the Chinese Room argument argue that there is no reason to expect our intuitions about intelligence and understanding to be reliable.
  • Ethics leans especially heavily on appeals to intuition, with a whole school of ethicists (“intuitionists”) maintaining that a person can see the truth of general ethical principles not through reason, but because he “just sees without argument that they are and must be true.”6
  • Intuitions are also called upon to rebut ethical theories such as utilitarianism: maximizing overall utility would require you to kill one innocent person if, in so doing, you could harvest her organs and save five people in need of transplants. Such a conclusion is taken as a reductio ad absurdum, requiring utilitarianism to be either abandoned or radically revised – not because the conclusion is logically wrong, but because it strikes nearly everyone as intuitively wrong.
  • British philosopher G.E. Moore used intuition to argue that the existence of beauty is good irrespective of whether anyone ever gets to see and enjoy that beauty. Imagine two planets, he said, one full of stunning natural wonders – trees, sunsets, rivers, and so on – and the other full of filth. Now suppose that nobody will ever have the opportunity to glimpse either of those two worlds. Moore concluded, “Well, even so, supposing them quite apart from any possible contemplation by human beings; still, is it irrational to hold that it is better that the beautiful world should exist than the one which is ugly? Would it not be well, in any case, to do what we could to produce it rather than the other? Certainly I cannot help thinking that it would."7
  • Although similar appeals to intuition can be found throughout all the philosophical subfields, their validity as evidence has come under increasing scrutiny over the last two decades, from philosophers such as Hilary Kornblith, Robert Cummins, Stephen Stich, Jonathan Weinberg, and Jaakko Hintikka (links go to representative papers from each philosopher on this issue). The severity of their criticisms vary from Weinberg’s warning that “We simply do not know enough about how intuitions work,” to Cummins’ wholesale rejection of philosophical intuition as “epistemologically useless.”
  • One central concern for the critics is that a single question can inspire totally different, and mutually contradictory, intuitions in different people.
  • For example, I disagree with Moore’s intuition that it would be better for a beautiful planet to exist than an ugly one even if there were no one around to see it. I can’t understand what the words “better” and “worse,” let alone “beautiful” and “ugly,” could possibly mean outside the domain of the experiences of conscious beings
  • If we want to take philosophers’ intuitions as reason to believe a proposition, then the existence of opposing intuitions leaves us in the uncomfortable position of having reason to believe both a proposition and its opposite.
  • “I suspect there is overall less agreement than standard philosophical practice presupposes, because having the ‘right’ intuitions is the entry ticket to various subareas of philosophy,” Weinberg says.
  • But the problem that intuitions are often not universally shared is overshadowed by another problem: even if an intuition is universally shared, that doesn’t mean it’s accurate. For in fact there are many universal intuitions that are demonstrably false.
  • People who have not been taught otherwise typically assume that an object dropped out of a moving plane will fall straight down to earth, at exactly the same latitude and longitude from which it was dropped. What will actually happen is that, because the object begins its fall with the same forward momentum it had while it was on the plane, it will continue to travel forward, tracing out a curve as it falls and not a straight line. “Considering the inadequacies of ordinary physical intuitions, it is natural to wonder whether ordinary moral intuitions might be similarly inadequate,” Princeton’s Gilbert Harman has argued,9 and the same could be said for our intuitions about consciousness, metaphysics, and so on.
  • We can’t usually “check” the truth of our philosophical intuitions externally, with an experiment or a proof, the way we can in physics or math. But it’s not clear why we should expect intuitions to be true. If we have an innate tendency towards certain intuitive beliefs, it’s likely because they were useful to our ancestors.
  • But there’s no reason to expect that the intuitions which were true in the world of our ancestors would also be true in other, unfamiliar contexts
  • And for some useful intuitions, such as moral ones, “truth” may have been beside the point. It’s not hard to see how moral intuitions in favor of fairness and generosity would have been crucial to the survival of our ancestors’ tribes, as would the intuition to condemn tribe members who betrayed those reciprocal norms. If we can account for the presence of these moral intuitions by the fact that they were useful, is there any reason left to hypothesize that they are also “true”? The same question could be asked of the moral intuitions which Jonathan Haidt has classified as “purity-based” – an aversion to incest, for example, would clearly have been beneficial to our ancestors. Since that fact alone suffices to explain the (widespread) presence of the “incest is morally wrong” intuition, why should we take that intuition as evidence that “incest is morally wrong” is true?
  • The still-young debate over intuition will likely continue to rage, especially since it’s intertwined with a rapidly growing body of cognitive and social psychological research examining where our intuitions come from and how they vary across time and place.
  • its resolution bears on the work of literally every field of analytic philosophy, except perhaps logic. Can analytic philosophy survive without intuition? (If so, what would it look like?) And can the debate over the legitimacy of appeals to intuition be resolved with an appeal to intuition?
Weiye Loh

Don't dumb me down | Science | The Guardian - 0 views

  • Science stories usually fall into three families: wacky stories, scare stories and "breakthrough" stories.
  • these stories are invariably written by the science correspondents, and hotly followed, to universal jubilation, with comment pieces, by humanities graduates, on how bonkers and irrelevant scientists are.
  • A close relative of the wacky story is the paradoxical health story. Every Christmas and Easter, regular as clockwork, you can read that chocolate is good for you (www.badscience.net/?p=67), just like red wine is, and with the same monotonous regularity
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  • At the other end of the spectrum, scare stories are - of course - a stalwart of media science. Based on minimal evidence and expanded with poor understanding of its significance, they help perform the most crucial function for the media, which is selling you, the reader, to their advertisers. The MMR disaster was a fantasy entirely of the media's making (www.badscience.net/?p=23), which failed to go away. In fact the Daily Mail is still publishing hysterical anti-immunisation stories, including one calling the pneumococcus vaccine a "triple jab", presumably because they misunderstood that the meningitis, pneumonia, and septicaemia it protects against are all caused by the same pneumococcus bacteria (www.badscience.net/?p=118).
  • people periodically come up to me and say, isn't it funny how that Wakefield MMR paper turned out to be Bad Science after all? And I say: no. The paper always was and still remains a perfectly good small case series report, but it was systematically misrepresented as being more than that, by media that are incapable of interpreting and reporting scientific data.
  • Once journalists get their teeth into what they think is a scare story, trivial increases in risk are presented, often out of context, but always using one single way of expressing risk, the "relative risk increase", that makes the danger appear disproportionately large (www.badscience.net/?p=8).
  • he media obsession with "new breakthroughs": a more subtly destructive category of science story. It's quite understandable that newspapers should feel it's their job to write about new stuff. But in the aggregate, these stories sell the idea that science, and indeed the whole empirical world view, is only about tenuous, new, hotly-contested data
  • Articles about robustly-supported emerging themes and ideas would be more stimulating, of course, than most single experimental results, and these themes are, most people would agree, the real developments in science. But they emerge over months and several bits of evidence, not single rejiggable press releases. Often, a front page science story will emerge from a press release alone, and the formal academic paper may never appear, or appear much later, and then not even show what the press reports claimed it would (www.badscience.net/?p=159).
  • there was an interesting essay in the journal PLoS Medicine, about how most brand new research findings will turn out to be false (www.tinyurl.com/ceq33). It predictably generated a small flurry of ecstatic pieces from humanities graduates in the media, along the lines of science is made-up, self-aggrandising, hegemony-maintaining, transient fad nonsense; and this is the perfect example of the parody hypothesis that we'll see later. Scientists know how to read a paper. That's what they do for a living: read papers, pick them apart, pull out what's good and bad.
  • Scientists never said that tenuous small new findings were important headline news - journalists did.
  • there is no useful information in most science stories. A piece in the Independent on Sunday from January 11 2004 suggested that mail-order Viagra is a rip-off because it does not contain the "correct form" of the drug. I don't use the stuff, but there were 1,147 words in that piece. Just tell me: was it a different salt, a different preparation, a different isomer, a related molecule, a completely different drug? No idea. No room for that one bit of information.
  • Remember all those stories about the danger of mobile phones? I was on holiday at the time, and not looking things up obsessively on PubMed; but off in the sunshine I must have read 15 newspaper articles on the subject. Not one told me what the experiment flagging up the danger was. What was the exposure, the measured outcome, was it human or animal data? Figures? Anything? Nothing. I've never bothered to look it up for myself, and so I'm still as much in the dark as you.
  • Because papers think you won't understand the "science bit", all stories involving science must be dumbed down, leaving pieces without enough content to stimulate the only people who are actually going to read them - that is, the people who know a bit about science.
  • Compare this with the book review section, in any newspaper. The more obscure references to Russian novelists and French philosophers you can bang in, the better writer everyone thinks you are. Nobody dumbs down the finance pages.
  • Statistics are what causes the most fear for reporters, and so they are usually just edited out, with interesting consequences. Because science isn't about something being true or not true: that's a humanities graduate parody. It's about the error bar, statistical significance, it's about how reliable and valid the experiment was, it's about coming to a verdict, about a hypothesis, on the back of lots of bits of evidence.
  • science journalists somehow don't understand the difference between the evidence and the hypothesis. The Times's health editor Nigel Hawkes recently covered an experiment which showed that having younger siblings was associated with a lower incidence of multiple sclerosis. MS is caused by the immune system turning on the body. "This is more likely to happen if a child at a key stage of development is not exposed to infections from younger siblings, says the study." That's what Hawkes said. Wrong! That's the "Hygiene Hypothesis", that's not what the study showed: the study just found that having younger siblings seemed to be somewhat protective against MS: it didn't say, couldn't say, what the mechanism was, like whether it happened through greater exposure to infections. He confused evidence with hypothesis (www.badscience.net/?p=112), and he is a "science communicator".
  • how do the media work around their inability to deliver scientific evidence? They use authority figures, the very antithesis of what science is about, as if they were priests, or politicians, or parent figures. "Scientists today said ... scientists revealed ... scientists warned." And if they want balance, you'll get two scientists disagreeing, although with no explanation of why (an approach at its most dangerous with the myth that scientists were "divided" over the safety of MMR). One scientist will "reveal" something, and then another will "challenge" it
  • The danger of authority figure coverage, in the absence of real evidence, is that it leaves the field wide open for questionable authority figures to waltz in. Gillian McKeith, Andrew Wakefield, Kevin Warwick and the rest can all get a whole lot further, in an environment where their authority is taken as read, because their reasoning and evidence is rarely publicly examined.
  • it also reinforces the humanities graduate journalists' parody of science, for which we now have all the ingredients: science is about groundless, incomprehensible, didactic truth statements from scientists, who themselves are socially powerful, arbitrary, unelected authority figures. They are detached from reality: they do work that is either wacky, or dangerous, but either way, everything in science is tenuous, contradictory and, most ridiculously, "hard to understand".
  • This misrepresentation of science is a direct descendant of the reaction, in the Romantic movement, against the birth of science and empiricism more than 200 years ago; it's exactly the same paranoid fantasy as Mary Shelley's Frankenstein, only not as well written. We say descendant, but of course, the humanities haven't really moved forward at all, except to invent cultural relativism, which exists largely as a pooh-pooh reaction against science. And humanities graduates in the media, who suspect themselves to be intellectuals, desperately need to reinforce the idea that science is nonsense: because they've denied themselves access to the most significant developments in the history of western thought for 200 years, and secretly, deep down, they're angry with themselves over that.
  • had a good spirited row with an eminent science journalist, who kept telling me that scientists needed to face up to the fact that they had to get better at communicating to a lay audience. She is a humanities graduate. "Since you describe yourself as a science communicator," I would invariably say, to the sound of derisory laughter: "isn't that your job?" But no, for there is a popular and grand idea about, that scientific ignorance is a useful tool: if even they can understand it, they think to themselves, the reader will. What kind of a communicator does that make you?
  • Science is done by scientists, who write it up. Then a press release is written by a non-scientist, who runs it by their non-scientist boss, who then sends it to journalists without a science education who try to convey difficult new ideas to an audience of either lay people, or more likely - since they'll be the ones interested in reading the stuff - people who know their way around a t-test a lot better than any of these intermediaries. Finally, it's edited by a whole team of people who don't understand it. You can be sure that at least one person in any given "science communication" chain is just juggling words about on a page, without having the first clue what they mean, pretending they've got a proper job, their pens all lined up neatly on the desk.
Weiye Loh

Skepticblog » A Creationist Challenge - 0 views

  • The commenter starts with some ad hominems, asserting that my post is biased and emotional. They provide no evidence or argument to support this assertion. And of course they don’t even attempt to counter any of the arguments I laid out. They then follow up with an argument from authority – he can link to a PhD creationist – so there.
  • The article that the commenter links to is by Henry M. Morris, founder for the Institute for Creation Research (ICR) – a young-earth creationist organization. Morris was (he died in 2006 following a stroke) a PhD – in civil engineering. This point is irrelevant to his actual arguments. I bring it up only to put the commenter’s argument from authority into perspective. No disrespect to engineers – but they are not biologists. They have no expertise relevant to the question of evolution – no more than my MD. So let’s stick to the arguments themselves.
  • The article by Morris is an overview of so-called Creation Science, of which Morris was a major architect. The arguments he presents are all old creationist canards, long deconstructed by scientists. In fact I address many of them in my original refutation. Creationists generally are not very original – they recycle old arguments endlessly, regardless of how many times they have been destroyed.
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  • Morris also makes heavy use of the “taking a quote out of context” strategy favored by creationists. His quotes are often from secondary sources and are incomplete.
  • A more scholarly (i.e. intellectually honest) approach would be to cite actual evidence to support a point. If you are going to cite an authority, then make sure the quote is relevant, in context, and complete.
  • And even better, cite a number of sources to show that the opinion is representative. Rather we get single, partial, and often outdated quotes without context.
  • (nature is not, it turns out, cleanly divided into “kinds”, which have no operational definition). He also repeats this canard: Such variation is often called microevolution, and these minor horizontal (or downward) changes occur fairly often, but such changes are not true “vertical” evolution. This is the microevolution/macroevolution false dichotomy. It is only “often called” this by creationists – not by actual evolutionary scientists. There is no theoretical or empirical division between macro and micro evolution. There is just evolution, which can result in the full spectrum of change from minor tweaks to major changes.
  • Morris wonders why there are no “dats” – dog-cat transitional species. He misses the hierarchical nature of evolution. As evolution proceeds, and creatures develop a greater and greater evolutionary history behind them, they increasingly are committed to their body plan. This results in a nestled hierarchy of groups – which is reflected in taxonomy (the naming scheme of living things).
  • once our distant ancestors developed the basic body plan of chordates, they were committed to that body plan. Subsequent evolution resulted in variations on that plan, each of which then developed further variations, etc. But evolution cannot go backward, undo evolutionary changes and then proceed down a different path. Once an evolutionary line has developed into a dog, evolution can produce variations on the dog, but it cannot go backwards and produce a cat.
  • Stephen J. Gould described this distinction as the difference between disparity and diversity. Disparity (the degree of morphological difference) actually decreases over evolutionary time, as lineages go extinct and the surviving lineages are committed to fewer and fewer basic body plans. Meanwhile, diversity (the number of variations on a body plan) within groups tends to increase over time.
  • the kind of evolutionary changes that were happening in the past, when species were relatively undifferentiated (compared to contemporary species) is indeed not happening today. Modern multi-cellular life has 600 million years of evolutionary history constraining their future evolution – which was not true of species at the base of the evolutionary tree. But modern species are indeed still evolving.
  • Here is a list of research documenting observed instances of speciation. The list is from 1995, and there are more recent examples to add to the list. Here are some more. And here is a good list with references of more recent cases.
  • Next Morris tries to convince the reader that there is no evidence for evolution in the past, focusing on the fossil record. He repeats the false claim (again, which I already dealt with) that there are no transitional fossils: Even those who believe in rapid evolution recognize that a considerable number of generations would be required for one distinct “kind” to evolve into another more complex kind. There ought, therefore, to be a considerable number of true transitional structures preserved in the fossils — after all, there are billions of non-transitional structures there! But (with the exception of a few very doubtful creatures such as the controversial feathered dinosaurs and the alleged walking whales), they are not there.
  • I deal with this question at length here, pointing out that there are numerous transitional fossils for the evolution of terrestrial vertebrates, mammals, whales, birds, turtles, and yes – humans from ape ancestors. There are many more examples, these are just some of my favorites.
  • Much of what follows (as you can see it takes far more space to correct the lies and distortions of Morris than it did to create them) is classic denialism – misinterpreting the state of the science, and confusing lack of information about the details of evolution with lack of confidence in the fact of evolution. Here are some examples – he quotes Niles Eldridge: “It is a simple ineluctable truth that virtually all members of a biota remain basically stable, with minor fluctuations, throughout their durations. . . .“ So how do evolutionists arrive at their evolutionary trees from fossils of organisms which didn’t change during their durations? Beware the “….” – that means that meaningful parts of the quote are being omitted. I happen to have the book (The Pattern of Evolution) from which Morris mined that particular quote. Here’s the rest of it: (Remember, by “biota” we mean the commonly preserved plants and animals of a particular geological interval, which occupy regions often as large as Roger Tory Peterson’s “eastern” region of North American birds.) And when these systems change – when the older species disappear, and new ones take their place – the change happens relatively abruptly and in lockstep fashion.”
  • Eldridge was one of the authors (with Gould) of punctuated equilibrium theory. This states that, if you look at the fossil record, what we see are species emerging, persisting with little change for a while, and then disappearing from the fossil record. They theorize that most species most of the time are at equilibrium with their environment, and so do not change much. But these periods of equilibrium are punctuated by disequilibrium – periods of change when species will have to migrate, evolve, or go extinct.
  • This does not mean that speciation does not take place. And if you look at the fossil record we see a pattern of descendant species emerging from ancestor species over time – in a nice evolutionary pattern. Morris gives a complete misrepresentation of Eldridge’s point – once again we see intellectual dishonesty in his methods of an astounding degree.
  • Regarding the atheism = religion comment, it reminds me of a great analogy that I first heard on twitter from Evil Eye. (paraphrase) “those that say atheism is a religion, is like saying ‘not collecting stamps’ is a hobby too.”
  • Morris next tackles the genetic evidence, writing: More often is the argument used that similar DNA structures in two different organisms proves common evolutionary ancestry. Neither argument is valid. There is no reason whatever why the Creator could not or would not use the same type of genetic code based on DNA for all His created life forms. This is evidence for intelligent design and creation, not evolution.
  • Here is an excellent summary of the multiple lines of molecular evidence for evolution. Basically, if we look at the sequence of DNA, the variations in trinucleotide codes for amino acids, and amino acids for proteins, and transposons within DNA we see a pattern that can only be explained by evolution (or a mischievous god who chose, for some reason, to make life look exactly as if it had evolved – a non-falsifiable notion).
  • The genetic code is essentially comprised of four letters (ACGT for DNA), and every triplet of three letters equates to a specific amino acid. There are 64 (4^3) possible three letter combinations, and 20 amino acids. A few combinations are used for housekeeping, like a code to indicate where a gene stops, but the rest code for amino acids. There are more combinations than amino acids, so most amino acids are coded for by multiple combinations. This means that a mutation that results in a one-letter change might alter from one code for a particular amino acid to another code for the same amino acid. This is called a silent mutation because it does not result in any change in the resulting protein.
  • It also means that there are very many possible codes for any individual protein. The question is – which codes out of the gazillions of possible codes do we find for each type of protein in different species. If each “kind” were created separately there would not need to be any relationship. Each kind could have it’s own variation, or they could all be identical if they were essentially copied (plus any mutations accruing since creation, which would be minimal). But if life evolved then we would expect that the exact sequence of DNA code would be similar in related species, but progressively different (through silent mutations) over evolutionary time.
  • This is precisely what we find – in every protein we have examined. This pattern is necessary if evolution were true. It cannot be explained by random chance (the probability is absurdly tiny – essentially zero). And it makes no sense from a creationist perspective. This same pattern (a branching hierarchy) emerges when we look at amino acid substitutions in proteins and other aspects of the genetic code.
  • Morris goes for the second law of thermodynamics again – in the exact way that I already addressed. He responds to scientists correctly pointing out that the Earth is an open system, by writing: This naive response to the entropy law is typical of evolutionary dissimulation. While it is true that local order can increase in an open system if certain conditions are met, the fact is that evolution does not meet those conditions. Simply saying that the earth is open to the energy from the sun says nothing about how that raw solar heat is converted into increased complexity in any system, open or closed. The fact is that the best known and most fundamental equation of thermodynamics says that the influx of heat into an open system will increase the entropy of that system, not decrease it. All known cases of decreased entropy (or increased organization) in open systems involve a guiding program of some sort and one or more energy conversion mechanisms.
  • Energy has to be transformed into a usable form in order to do the work necessary to decrease entropy. That’s right. That work is done by life. Plants take solar energy (again – I’m not sure what “raw solar heat” means) and convert it into food. That food fuels the processes of life, which include development and reproduction. Evolution emerges from those processes- therefore the conditions that Morris speaks of are met.
  • But Morris next makes a very confused argument: Evolution has neither of these. Mutations are not “organizing” mechanisms, but disorganizing (in accord with the second law). They are commonly harmful, sometimes neutral, but never beneficial (at least as far as observed mutations are concerned). Natural selection cannot generate order, but can only “sieve out” the disorganizing mutations presented to it, thereby conserving the existing order, but never generating new order.
  • The notion that evolution (as if it’s a thing) needs to use energy is hopelessly confused. Evolution is a process that emerges from the system of life – and life certainly can use solar energy to decrease its entropy, and by extension the entropy of the biosphere. Morris slips into what is often presented as an information argument.  (Yet again – already dealt with. The pattern here is that we are seeing a shuffling around of the same tired creationists arguments.) It is first not true that most mutations are harmful. Many are silent, and many of those that are not silent are not harmful. They may be neutral, they may be a mixed blessing, and their relative benefit vs harm is likely to be situational. They may be fatal. And they also may be simply beneficial.
  • Morris finishes with a long rambling argument that evolution is religion. Evolution is promoted by its practitioners as more than mere science. Evolution is promulgated as an ideology, a secular religion — a full-fledged alternative to Christianity, with meaning and morality . . . . Evolution is a religion. This was true of evolution in the beginning, and it is true of evolution still today. Morris ties evolution to atheism, which, he argues, makes it a religion. This assumes, of course, that atheism is a religion. That depends on how you define atheism and how you define religion – but it is mostly wrong. Atheism is a lack of belief in one particular supernatural claim – that does not qualify it as a religion.
  • But mutations are not “disorganizing” – that does not even make sense. It seems to be based on a purely creationist notion that species are in some privileged perfect state, and any mutation can only take them farther from that perfection. For those who actually understand biology, life is a kluge of compromises and variation. Mutations are mostly lateral moves from one chaotic state to another. They are not directional. But they do provide raw material, variation, for natural selection. Natural selection cannot generate variation, but it can select among that variation to provide differential survival. This is an old game played by creationists – mutations are not selective, and natural selection is not creative (does not increase variation). These are true but irrelevant, because mutations increase variation and information, and selection is a creative force that results in the differential survival of better adapted variation.
  •  
    One of my earlier posts on SkepticBlog was Ten Major Flaws in Evolution: A Refutation, published two years ago. Occasionally a creationist shows up to snipe at the post, like this one:i read this and found it funny. It supposedly gives a scientific refutation, but it is full of more bias than fox news, and a lot of emotion as well.here's a scientific case by an actual scientists, you know, one with a ph. D, and he uses statements by some of your favorite evolutionary scientists to insist evolution doesn't exist.i challenge you to write a refutation on this one.http://www.icr.org/home/resources/resources_tracts_scientificcaseagainstevolution/Challenge accepted.
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When the scientific evidence is unwelcome, people try to reason it away | Ben Goldacre ... - 0 views

  • Each group found extensive methodological holes in the evidence they disagreed with, but ignored the very same holes in the evidence that reinforced their views.
  • Some people go even further than this when presented with unwelcome data, and decide that science itself is broken.
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    When the scientific evidence is unwelcome, people try to reason it away Research results not consistent with your world view? Then you're likely to believe science can't supply all the answers
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The Real Hoax Was Climategate | Media Matters Action Network - 0 views

  • Sen. Jim Inhofe's (R-OK) biggest claim to fame has been his oft-repeated line that global warming is "the greatest hoax ever perpetrated on the American people."
  • In 2003, he conceded that the earth was warming, but denied it was caused by human activity and suggested that "increases in global temperatures may have a beneficial effect on how we live our lives."
  • In 2009, however, he appeared on Fox News to declare that the earth was actually cooling, claiming "everyone understands that's the case" (they don't, because it isn't).
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  • nhofe's battle against climate science kicked into overdrive when a series of illegally obtained emails surfaced from the Climatic Research Unit at East Anglia University. 
  • When the dubious reports surfaced about flawed science, manipulated data, and unsubstantiated studies, Inhofe was ecstatic.  In March, he viciously attacked former Vice President Al Gore for defending the science behind climate change
  • Unfortunately for Senator Inhofe, none of those things are true.  One by one, the pillars of evidence supporting the alleged "scandals" have shattered, causing the entire "Climategate" storyline to come crashing down. 
  • a panel established by the University of East Anglia to investigate the integrity of the research of the Climatic Research Unit wrote: "We saw no evidence of any deliberate scientific malpractice in any of the work of the Climatic Research Unit and had it been there we believe that it is likely that we would have detected it."
  • Responding to allegations that Dr. Michael Mann tampered with scientific evidence, Pennsylvania State University conducted a thorough investigation. It concluded: "The Investigatory Committee, after careful review of all available evidence, determined that there is no substance to the allegation against Dr. Michael E. Mann, Professor, Department of Meteorology, The Pennsylvania State University.  More specifically, the Investigatory Committee determined that Dr. Michael E. Mann did not engage in, nor did he participate in, directly or indirectly, any actions that seriously deviated from accepted practices within the academic community for proposing, conducting, or reporting research, or other scholarly activities."
  • London's Sunday Times retracted its story, echoed by dozens of outlets, that an IPCC issued an unsubstantiated report claiming 40% of the Amazon rainforest was endangered due to changing rainfall patterns.  The Times wrote: "In fact, the IPCC's Amazon statement is supported by peer-reviewed scientific evidence. In the case of the WWF report, the figure had, in error, not been referenced, but was based on research by the respected Amazon Environmental Research Institute (IPAM) which did relate to the impact of climate change."
  • The Times also admitted it misrepresented the views of Dr. Simon Lewis, a Royal Society research fellow at the University of Leeds, implying he agreed with the article's false premise and believed the IPCC should not utilize reports issued by outside organizations.  In its retraction, the Times was forced to admit: "Dr Lewis does not dispute the scientific basis for both the IPCC and the WWF reports," and, "We accept that Dr Lewis holds no such view... A version of our article that had been checked with Dr Lewis underwent significant late editing and so did not give a fair or accurate account of his views on these points. We apologise for this."
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    The Real Hoax Was Climategate July 02, 2010 1:44 pm ET by Chris Harris
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Paul Crowley's Blog - A survey of anti-cryonics writing - 0 views

  • cryonics offers almost eternal life. To its critics, cryonics is pseudoscience; the idea that we could freeze someone today in such a way that future technology might be able to re-animate them is nothing more than wishful thinking on the desire to avoid death. Many who battle nonsense dressed as science have spoken out against it: see for example Nano Nonsense and Cryonics, a 2001 article by celebrated skeptic Michael Shermer; or check the Skeptic’s Dictionary or Quackwatch entries on the subject, or for more detail read the essay Cryonics–A futile desire for everlasting life by “Invisible Flan”.
  • And of course the pro-cryonics people have written reams and reams of material such as Ben Best’s Scientific Justification of Cryonics Practice on why they think this is exactly as plausible as I might think, and going into tremendous technical detail setting out arguments for its plausibility and addressing particular difficulties. It’s almost enough to make you want to sign up on the spot. Except, of course, that plenty of totally unscientific ideas are backed by reams of scientific-sounding documents good enough to fool non-experts like me. Backed by the deep pockets of the oil industry, global warming denialism has produced thousands of convincing-sounding arguments against the scientific consensus on CO2 and AGW. T
  • Nano Nonsense and Cryonics goes for the nitty-gritty right away in the opening paragraph:To see the flaw in this system, thaw out a can of frozen strawberries. During freezing, the water within each cell expands, crystallizes, and ruptures the cell membranes. When defrosted, all the intracellular goo oozes out, turning your strawberries into runny mush. This is your brain on cryonics.This sounds convincing, but doesn’t address what cryonicists actually claim. Ben Best, President and CEO of the Cryonics Institute, replies in the comments:Strawberries (and mammalian tissues) are not turned to mush by freezing because water expands and crystallizes inside the cells. Water crystallizes in the extracellular space because more nucleators are found extracellularly. As water crystallizes in the extracellular space, the extracellular salt concentration increases causing cells to lose water osmotically and shrink. Ultimately the cell membranes are broken by crushing from extracellular ice and/or high extracellular salt concentration. […] Cryonics organizations use vitrification perfusion before cooling to cryogenic temperatures. With good brain perfusion, vitrification can reduce ice formation to negligible amounts.
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  • The Skeptic’s Dictionary entry is no advance. Again, it refers erroneously to a “mushy brain”. It points out that the technology to reanimate those in storage does not already exist, but provides no help for us non-experts in assessing whether it is a plausible future technology, like super-fast computers or fusion power, or whether it is as crazy as the sand-powered tank; it simply asserts baldly and to me counterintuitively that it is the latter. Again, perhaps cryonic reanimation is a sand-powered tank, but I can explain to you why a sand-powered tank is implausible if you don’t already know, and if cryonics is in the same league I’d appreciate hearing the explanation.
  • Another part of the article points out the well-known difficulties with whole-body freezing — because the focus is on achieving the best possible preservation of the brain, other parts suffer more. But the reason why the brain is the focus is that you can afford to be a lot bolder in repairing other parts of the body — unlike the brain, if my liver doesn’t survive the freezing, it can be replaced altogether.
  • Further, the article ignores one of the most promising possibilities for reanimation, that of scanning and whole-brain emulation, a route that requires some big advances in computer and scanning technology as well as our understanding of the lowest levels of the brain’s function, but which completely sidesteps any problems with repairing either damage from the freezing process or whatever it was that led to legal death.
  • Sixteen years later, it seems that hasn’t changed; in fact, as far as the issue of technical feasability goes it is starting to look as if on all the Earth, or at least all the Internet, there is not one person who has ever taken the time to read and understand cryonics claims in any detail, still considers it pseudoscience, and has written a paper, article or even a blog post to rebut anything that cryonics advocates actually say. In fact, the best of the comments on my first blog post on the subject are already a higher standard than anything my searches have turned up.
  • I don’t have anything useful to add, I just wanted to say that I feel exactly as you do about cryonics and living forever. And I thought that this statement: I know that I don’t know enough to judge. shows extreme wisdom. If only people wishing to comment on global warming would apply the same test.
  • WRT global warming, the mistake people make is trying to go direct to the first-order evidence, which is much too complicated and too easy to misrepresent to hope to directly interpret unless you make it your life’s work, and even then only in a particular area. The correct thing to do is to collect second-order evidence, such as that every major scientific academy has backed the IPCC.
    • Weiye Loh
       
      First-order evidence vs second-order evidence...
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    Cryonics
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Haidt Requests Apology from Pigliucci « YourMorals.Org Moral Psychology Blog - 0 views

  • Here is my response to Pigliucci, which I posted as a comment on his blog. (Well, I submitted it as a comment on Feb 13 at 4pm EST, but he has not approved it yet, so it doesn’t show yet over there.)
  • Massimo Pigliucci, the chair of the philosophy department at CUNY-Lehman, wrote a critique of me on his blog, Rationally Speaking, in which he accused me of professional misconduct.
  • Dear Prof. Pigliucci: Let me be certain that I have understood you. You did not watch my talk, even though a link to it was embedded in the Tierney article. Instead, you picked out one piece of my argument (that the near-total absence of conservatives in social psychology is evidence of discrimination) and you made the standard response, the one that most bloggers have made: underrepresentation of any group is not, by itself, evidence of discrimination. That’s a good point; I made it myself quite explicitly in my talk: Of course there are many reasons why conservatives would be underrepresented in social psychology, and most of them have nothing to do with discrimination or hostile climate. Research on personality consistently shows that liberals are higher on openness to experience. They’re more interested in novel ideas, and in trying to use science to improve society. So of course our field is and always will be mostly liberal. I don’t think we should ever strive for exact proportional representation.
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  • I made it clear that I’m not concerned about simple underrepresentation. I did not even make the moral argument that we need ideological diversity to right an injustice. Rather, I focused on what happens when a scientific community shares sacred values. A tribal moral community arises, one that actively suppresses ideas that are sacrilegious, and that discourages non-believers from entering. I argued that my field has become a tribal moral community, and the absence of conservatives (not just their underrepresentation) has serious consequences for the quality of our science. We rely on our peers to find flaws in our arguments, but when there is essentially nobody out there to challenge liberal assumptions and interpretations of experimental findings, the peer review process breaks down, at least for work that is related to those sacred values. (
  • The fact that you criticized me without making an effort to understand me is not surprising.
  • Rather, what sets you apart from all other bloggers who are members of the academy is what you did next. You accused me of professional misconduct—lying, essentially–and you speculated as to my true motive: I suspect that Haidt is either an incompetent psychologist (not likely) or is disingenuously saying the sort of things controversial enough to get him in the New York Times (more likely).
  • As far as I can tell your evidence for these accusations is that my argument was so bad that I couldn’t have believed it myself. Here is how you justified your accusations: A serious social scientist doesn’t go around crying out discrimination just on the basis of unequal numbers. If that were the case, the NBA would be sued for discriminating against short people, dance companies against people without spatial coordination, and newspapers against dyslexics
  • Accusations of professional misconduct are sensibly made only if one has a reasonable and detailed understanding of the facts of the case, and can bring forth evidence of misconduct. Pigliucci has made no effort to acquire such an understanding, nor has he presented any evidence to support his accusation. He simply took one claim from the Tierney article and then ran wild with speculation about Haidt’s motives. It was pretty silly of him, and down right irresponsible of Pigliucci to publish that garbage without even knowing what Haidt said.
  • I challenge you to watch the video of my talk (click here) and then either 1) Retract your blog post and apologize publicly for calling me a liar or 2) State on your blog that you stand by your original post. If you do stand by your post, even after hearing my argument, then the world can decide for itself which of us is right, and which of us best models the ideals of science, philosophy, and the Enlightenment which you claim for yourself in the header of your blog, “Rationally Speaking.” Jonathan Haidt
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New Study Shows EMF Effect On Brain - So What? « Health « Skeptic North - 0 views

  • In the past 6 months, Skeptic North has run several articles about WiFi, cell phones and the purported health effects that radio-frequency electro-magnetic fields (RF-EMF) may or may not have on the brain and body.  Despite the overwhelming evidence to the contrary, the controversy remains to be a popular story in the media, perhaps because of the ubiquitous nature of cellular technology and the popular meme of the hidden dangers of modern life.
  • over the news this week were reports of a new study purporting to show a link between cell phone EMF radiation and increased brain metabolism.  The study was conducted by a well-respected group of NIH researchers conducting tests at the Brookhaven National Laboratory in the US.  The study is available in abstract for free here, but you have to pay to have access to the full text version.  Reporters all over network news told a simplified story of the paper by Volkow et al, published in the Journal of the American Medical Association, and drew conclusions outside the scope of the study, inflaming an already overly effulgent debate.
  •  I and others have continued to insist that there is no good evidence of any effect by the microwave radiation emitted by cell phones, cell towers and other electronics on the brain and other body systems, let alone that this radiation causes cancer or other serious illnesses.  The syndrome referred to as electro-hypersensitivity remains un-proved and unfounded, but it seems like there is new evidence that shows that the normal levels of radiation emitted by a cell phone can effect neuronal cells in the brain.
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    This study is what it is: another thread in the fine woven cloth of our knowledge of nature. It is not a panacea, nor does it refute any evidence that there is or is not a risk of health effects from cell phone use, nor does it show a mechanism of how EMF could alter biological systems. Anybody who purports that it does is basing this conclusion on ideology, not science.
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Roger Pielke Jr.'s Blog: Ideological Diversity in Academia - 0 views

  • Jonathan Haidt's talk (above) at the annual meeting of the Society for Personality and Social Psychology was written up last week in a column by John Tierney in the NY Times.  This was soon followed by a dismissal of the work by Paul Krugman.  The entire sequence is interesting, but for me the best part, and the one that gets to the nub of the issue, is Haight's response to Krugman: My research, like so much research in social psychology, demonstrates that we humans are experts at using reasoning to find evidence for whatever conclusions we want to reach. We are terrible at searching for contradictory evidence. Science works because our peers are so darn good at finding that contradictory evidence for us. Social science — at least my corner of it — is broken because there is nobody to look for contradictory evidence regarding sacralized issues, particularly those related to race, gender, and class. I urged my colleagues to increase our ideological diversity not for any moral reason, but because it will make us better scientists. You do not have that problem in economics where the majority is liberal but there is a substantial and vocal minority of libertarians and conservatives. Your field is healthy, mine is not. Do you think I was wrong to call for my professional organization to seek out a modicum of ideological diversity?
  • On a related note, the IMF review of why the institution failed to warn of the global financial crisis identified a lack of intellectual diversity as being among the factors responsible (PDF): Several cognitive biases seem to have played an important role. Groupthink refers to the tendency among homogeneous, cohesive groups to consider issues only within a certain paradigm and not challenge its basic premises (Janis, 1982). The prevailing view among IMF staff—a cohesive group of macroeconomists—was that market discipline and self-regulation would be sufficient to stave off serious problems in financial institutions. They also believed that crises were unlikely to happen in advanced economies, where “sophisticated” financial markets could thrive safely with minimal regulation of a large and growing portion of the financial system.Everyyone in academia has seen similar dynamics at work.
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New evidence about Amina, the "Gay Girl in Damascus" hoax | The Electronic Intifada - 0 views

  • We believe the story of Amina to be totally baseless and the doubts expressed by other observers, such as Liz Henry and Andy Carvin, to be entirely founded. We also believe that whoever is responsible for the hoax is attempting to conceal their responsibility and continues to disseminate false information. They have previously engaged in such behavior as taking photographs from the Facebook page of a totally uninvolved individual and deceptively presenting them as being images of Amina and members of her family. We believe that the person or persons responsible should end this deception which has been harmful to individuals who trusted and believed in “Amina” and more broadly has sown confusion, distraction and absorbed energy and attention at a time when real people are in danger in Syria and in other countries in the region. We are sharing the information we have gathered here not in order to level accusations, but so that others might pursue these leads to conclusive ends. The best outcome would be if the person or persons behind the hoax would take responsibility themselves to bring the matter to a close and provide all doubters with reassurance that “Amina” is not in danger because she is a fictitious character. While we believe that the information gathered here is compelling in its own right, we have managed to corroborate additional information from several independent sources that we are not publishing and that significantly increases our confidence in the information we have. We do not know the motives of the person or persons behind this hoax.
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    We have gathered compelling new evidence regarding the "Gay Girl in Damascus" blogger hoax.
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11.01.97 - Misconceptions about the causes of cancer lead to skewed priorities and wast... - 0 views

  • One of the big misconceptions is that artificial chemicals such as pesticides have a lot to do with human cancer, but that's just not true," says Bruce N. Ames, professor of biochemistry and molecular biology at the University of California at Berkeley and co-author of a new review of what is known about environmental pollution and cancer. "Nevertheless, it's conventional wisdom and society spends billions on this each year." "We consume more carcinogens in one cup of coffee than we get from the pesticide residues on all the fruits and vegetables we eat in a year," he adds.
  • there may be many excellent reasons for cleaning up pollution of our air, water and soil, the researchers say, prevention of cancer is not one of them.
  • "The problem is that lifestyle changes are tough," says Gold, director of the Carcinogenic Potency Project at UC Berkeley's National Institute for Environmental Health Sciences Center and a senior scientist in the cell and molecular biology division at Lawrence Berkeley National Laboratory. "But by targeting pesticide residues as a major problem, we risk making fruits and vegetables more expensive and indirectly increasing cancer risks, especially among the poor."
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  • Whereas 99.9 percent of all the chemicals we ingest are natural, 78 percent of the chemicals tested are synthetic. So when more than half of all synthetic chemicals are found to cause cancer in rodents, it's not surprising that people link cancer with synthetic chemicals. But of the natural chemicals in our diet that have been tested in animals, half also cause cancer, Gold says.
  • "We need to recognize that there are far more carcinogens in the natural world than in the synthetic world, and go after the important things, such as lifestyle change."
  • Misconception: Cancer rates are soaring. In fact, the researchers say, if lung cancer due to smoking is excluded, overall cancer deaths in the U.S. have declined 16 percent since 1950.
  • Misconception: Reducing pesticide residues is an effective way to prevent diet-related cancer. Because fruits and vegetables are of major importance in reducing cancer, the unintended effect of requiring expensive efforts to reduce the amount of pesticides remaining on fruits and vegetables will be to increase their cost. This will lead to an increase in cancer among low income people who no longer will be able to afford to eat them.
  • Misconception: Human exposures to carcinogens and other potential hazards are primarily due to synthetic chemicals. Americans actually eat about 10,000 times more natural pesticides from fruits and vegetables than synthetic pesticide residues on food. Natural pesticides are chemicals that plants produce to defend themselves against fungi, insects, and other predators. And half of all natural pesticides tested in rodents turn out to be rodent carcinogens. In addition, we consume many other carcinogens in foods because of the chemicals produced in cooking. In a single cup of roasted coffee, for example, the natural chemicals known to be rodent carcinogens are about equal in weight to an entire year's work of synthetic pesticide residues.
  • Misconception: Cancer risks to humans can be assessed by standard high-dose animal cancer tests. In cancer tests, animals are given very high, nearly toxic doses. The effect on humans at lower doses is extrapolated from these results, as if the relationship were a straight line from high dose to low dose. However, the fact that half of all chemicals tested, whether natural or synthetic, turn out to cause cancer in rodents implies that this is an artifact of using high doses. High doses of any chemical can chronically kill cells and wound tissue, a risk factor for cancer . "Our conclusion is that the scientific evidence shows that there are high-dose effects," Ames says. "But even though government regulatory agencies recognize this, they still decide which synthetic chemicals to regulate based on linear extrapolation of high dose cancer tests in animals."
  • Misconception: Synthetic chemicals pose greater carcinogenic hazards than natural chemicals. Naturally occurring carcinogens represent an enormous background compared to the low-dose exposures to residues of synthetic chemicals such as pesticides, the researchers conclude. These results call for a reevaluation of whether animal cancer tests are really useful guides for protecting the public against minor hypothetical risks.
  • Misconception: The toxicology of synthetic chemicals is different from that of natural chemicals. No evidence exists for this, but the assumption could lead to unfortunate tradeoffs between natural and synthetic pesticides. Recently, for example, when a new variety of highly insect-resistant celery was introduced on a farm, the workers handling the celery developed rashes when they were exposed to sunlight. The pest-resistant celery turned out to contain almost eight times more natural pesticide in the form of psoralens -- chemicals known to cause cancer and genetic mutations -- than common celery.
  • Misconception: Pesticides and other synthetic chemicals are disrupting human hormones. Claims that synthetic chemicals with hormonal activity contribute to cancer and reduced sperm count ignore the fact that natural chemicals have hormone-like activity millions of times greater than do traces of synthetic chemicals. Rather, lifestyle -- lack of exercise, obesity, alcohol use and reproductive history -- are known to lead to marked changes in hormone levels in the body.
  • Misconception: Regulating low, hypothetical risks advances public health. Society -- primarily the private sector -- will spend an estimated $140 billion to comply with environmental regulations this year, according to projections by the Environmental Protection Agency. Much of this is aimed at reducing low-level human exposure to chemicals solely because they are rodent carcinogens, despite the fact that this rationale is flawed. Our improved ability to detect even minuscule concentrations of chemicals makes regulation even more expensive.
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    BERKELEY -- Despite a lack of convincing evidence that pollution is an important cause of human cancer, this misconception drives government policy today and results in billions of dollars spent to clean up minuscule amounts of synthetic chemicals, say two UC Berkeley researchers.
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Freakonomics » Scientific Literacy Does Not Increase Concern Over Climate Cha... - 0 views

  • The conventional explanation for controversy over climate change emphasizes impediments to public understanding: Limited popular knowledge of science, the inability of ordinary citizens to assess technical information, and the resulting widespread use of unreliable cognitive heuristics to assess risk. A large survey of U.S. adults (N = 1540) found little support for this account. On the whole, the most scientifically literate and numerate subjects were slightly less likely, not more, to see climate change as a serious threat than the least scientifically literate and numerate ones. More importantly, greater scientific literacy and numeracy were associated with greater cultural polarization: Respondents predisposed by their values to dismiss climate change evidence became more dismissive, and those predisposed by their values to credit such evidence more concerned, as science literacy and numeracy increased. We suggest that this evidence reflects a conflict between two levels of rationality: The individual level, which is characterized by citizens’ effective use of their knowledge and reasoning capacities to form risk perceptions that express their cultural commitments; and the collective level, which is characterized by citizens’ failure to converge on the best available scientific evidence on how to promote their common welfare. Dispelling this, “tragedy of the risk-perception commons,” we argue, should be understood as the central aim of the science of science communication.
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    A new study by the Cultural Cognition Project, a team headed up by Yale law professor Dan Kahan, shows that people who are more science- and math-literate tend to be more skeptical about the consequences of climate change. Increased scientific literacy also leads to higher polarization on climate-change issues:
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5 Great Men Who Built Their Careers on Plagiarism | Cracked.com - 1 views

  • Ambrose invented pop history. He was the historical advisor on Saving Private Ryan and wrote the book Band of Brothers, that miniseries about WWII that starred the guy from Office Space.
  • In 1995, an almost unknown historian named Thomas Childers published the book Wings of Morning. It was a well-received but relatively obscure novel about the crew of a specific B-24 bomber during WWII. Ambrose was a fan of the book and, as a firm believer that imitation is the sincerest form of flattery, he proceeded to plagiarize the fuck out of it for his hit 2001 novel, The Wild Blue, which was the account of a different group of B-24 crewmen. Ambrose ripped off whole passages of text and stole several sentences and descriptions word for word. Then he got his book published and just sort of hoped no one would notice.
  • but fortunately for truth, he got caught. Fred Barnes of the Weekly Standard noticed what was going on and revealed it to the world. Ambrose was fast to respond. He had cited Childers' book in his bibliography (although he hadn't come close to listing everything he 'borrowed' from his fellow historian's work) and basically claimed that he'd just "forgotten" to attribute the stolen passages in the text, like he was supposed to.
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  • For a little while, Stephen's apology was enough.
  • Mark Lewis, of Forbes.com, was not one of those people. He read the first story about Ambrose and, like a good investigative journalist, proceeded to tear apart everything the pop historian had written in his search for the truth.
  • he found several blatant thefts in the book Crazy Horse and Custer, which Ambrose pretended to write in 1995. For that novel, Ambrose molested the work of esteemed historical writer Jay Monagham. Here's an excerpt from the Forbes article: MONAGHAM: "On August 28, 1859, Custer returned to West Point. Cadet James Barroll Washington, a great-great-grandnephew of George Washington, entered that year. He remembered hearing the crowd shout, 'Here comes Custer!' The name meant nothing to him, but he turned, and saw a slim, immature lad with unmilitary figure, slightly rounded shoulders, and gangling walk." AMBROSE: "When he returned to West Point, Cadet James B. Washington, a relative of George Washington, remembered hearing the crowd shout, 'Here comes Custer!' The name meant nothing to Washington, who was just entering the Academy, but he turned and saw a slim, immature lad with unmilitary figure, slightly rounded shoulders, and gangling walk, surrounded by back-slapping, laughing friends."
  • n total, seven of his books were found to contain some degree of plagiarism. His fucking college thesis was even loaded down with other people's unattributed writing. The most famous historian in the world built his career on a foundation of deception. Did He Pay? He really didn't. Evidence of his wrongdoing came up very shortly before his death from lung cancer in 2002.
  • T.S. Eliot wrote several great, enduring poems, such as "The Love Song of J. Alfred Prufrock" which had a ridiculous title, and "The Hollow Men," which, we were depressed to discover, wasn't about a naked, invisible, murdering lunatic. Perhaps his greatest work was a poem entitled, "The Waste Land," which was a haunting statement of his disillusionment with the post-war era. It was a literary milestone, and is still celebrated today as one of the greatest works of poetry in history.
  • The problem with this is that Eliot didn't write "The Waste Land." Not all of it anyway. As it turns out, the idea behind "The Waste Land," and a fair amount of its content, was plagiarized from an almost unknown American poet named Madison Cawein.
  • Cawein worked hard all of his youth, scrimping and saving and putting aside enough money so that he could begin finally working on his true love: poetry. He put out several volumes of work that is very well regarded, but he never gained any recognition and died almost unknown. Which just goes to show you that, if you work hard in this country and believe in yourself, you'll die alone and under appreciated.
  • Madison Cawein wasn't the only person Eliot stole from. This passage from "The Waste Land:" "The Chair she sat in, like a burnished throne / Glowed on the marble," was slightly altered but still stolen from Shakespeare, who wrote, "The barge she sat in, like a burnish'd throne / Burn'd on the water". Eliot's line, "Sweet Thames, run softly, till I end my song," was stolen entirely from Edmund Spenser's "Prothalamion."
  • Most of "The Waste Land" was just cobbled together out of quotes from other writers. Until very recently, most scholars have been happy to simply chalk these up as "allusions" to the work of other authors. For a long time, it was regarded as something poets just did, as a way of honoring their influences.
  • Did He Pay? "Immature poets imitate; mature poets steal" This is a quote from Eliot himself. You see, T.S. was rich, famous and beloved the world over. While he was alive, everyone just sort of ignored all of the evidence that he was a tremendous bastard. He died renowned as one of the greatest poets in all of history, which he was, but he was also a plagiarizing cockbag who denied a much worthier artist a place in history.
  • We're not saying that King wasn't an incredible person who did more to advance the human race
  • For starters, his own university admits that his doctoral thesis, the very foundation of his career, was significantly plagiarized.
  • Despite clear findings of plagiarism, the committee did not recommend he be posthumously stripped of his title, due to Dr. King's incredible services to the world. And due to their extreme fear of being beaten and castrated by hordes of angry MLK groupies.
  • Not only was his dissertation plagiarized, but many of his student papers and sermons were stolen in whole or in part from other writers. The staff of the King Paper's Project at Stanford even admits that, "King's plagiarism was a general pattern evident in nearly all of his academic writings." Is That All? Perhaps the most notable example of King's plagiarism was the general tone, and several select lines from his famous "I Have a Dream," speech. Theodore Pappas presents a detailed accusation in his book, Plagiarism and the Culture War. Most of the issue centers around the closing lines.
  • Did He Pay? Not during his lifetime. To be fair, it takes balls to accuse the greatest civil rights activist in history with plagiarism.
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    5 Great Men Who Built Their Careers on Plagiarism, Stephen Ambrose, Martin Luther King Jr., T. S. Elliot, Richard Owen, and H. G. Wells. 
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