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anonymous

BBC News - 'Survival of fittest' is disputed - 1 views

    • anonymous
       
      Scientific theories are always subject to future questioning.
  • The new study proposes that really big evolutionary changes happen when animals move into empty areas of living space, not occupied by other animals.
  • This concept challenges the idea that intense competition for resources in overcrowded habitats is the major driving force of evolution. Continue reading the main story “Start Quote What is the impetus to occupy new portions of ecological space if not to avoid competition?” End Quote Professor Stephen Stearns Yale University Professor Mike Benton, a co-author on the study, explained that "competition did not play a big role in the overall pattern of evolution".
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  • However, Professor Stephen Stearns, an evolutionary biologist at Yale University, US, told BBC News he "found the patterns interesting, but the interpretation problematic".
  • It proposes that Charles Darwin may have been wrong when he argued that competition was the major driving force of evolution.
  • But new research identifies the availability of "living space", rather than competition, as being of key importance for evolution.
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    Isn't this kind of like the reading we had...with the Uncertainty of Knowledge assignment? It talks about how science theories can be true because we believe them to be true, but because time changes and everything is different all the time, they are always easy to be proven wrong, and subject to change. That is like what you said about scientific theories being subject to future questioning. What we perceive to be an atom may not be what Socrates perceived as an atom, or some scientist from year 3000 perceives it. Science is always changing and therefore I agree that the laws that are made are always "refinable".
anonymous

Debate Over P vs. NP Proof Highlights Web Collaboration - NYTimes.com - 1 views

    • anonymous
       
      Here is the "So what?" component of this issue. Your next online purchase might not be as secure as the website says it is if P does equal NP.
  • The proof required the piecing together of principles from multiple areas within mathematics. The major effort in constructing this proof was uncovering a chain of conceptual links between various fields and viewing them through a common lens.”
    • anonymous
       
      Further evidence that expertise in various fields are necessary to solve future problems.
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  • alleged proofs
    • anonymous
       
      Careful choice of language.
  • “At this point the consensus is that there are large holes in the alleged proof — in fact, large enough that people do not consider the alleged proof to be a proof,” Dr. Vardi said. “I think Deolalikar got his 15 minutes of fame, but at this point the excitement has subsided and the skepticism is turning into negative conviction.”
    • anonymous
       
      More on the language of proof and what is required to achieve that term "proof."
  • This kind of collaboration has emerged only in recent years in the math and computer science communities. In the past, intense discussions like the one that surrounded the proof of the Poincaré conjecture were carried about via private e-mail and distribution lists as well as in the pages of traditional paper-based science journals.
    • anonymous
       
      How the scientific and mathematical communities communicate and vet theories is changing.
  • Clay Shirky, a professor of interactive telecommunications at New York University, argues that the emergence of these new collaborative tools is paving the way for a second scientific revolution in the same way the printing press created a demarcation between the age of alchemy and the age of chemistry.
  • Passions have run high. A computer scientist at the Massachusetts Institute of Technology, Scott Aaronson, literally bet his house last week — $200,000 — that the Deolalikar paper would be proved incorrect: “If Vinay Deolalikar is awarded the $1,000,000 Clay Millennium Prize for his proof of P-NP, then I, Scott Aaronson, will personally supplement his prize by the amount of $200,000.”
    • anonymous
       
      Even MIT mathematicians are passionate!!! Don't assume there is no emotion in mathematics.
anonymous

Basics - Primal, Acute and Easily Duped - Our Sense of Touch - NYTimes.com - 0 views

    • anonymous
       
      The tactile map is not the territory...we always change what we come into contact with by our very presence; the observer effect.
  • The signals from the various touch receptors converge on the brain and sketch out a so-called somatosensory homunculus, a highly plastic internal representation of the body. Like any map, the homunculus exaggerates some features and downplays others.
    • anonymous
       
      Even our internat tactile maps of ourselves are not the true territory of our bodies.
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  • But on some tactile tasks, touch is all thumbs. When people are given a raised line drawing of a common object, a bas-relief outline of, say, a screwdriver, they’re stumped. “If all we’ve got is contour information,” Dr. Lederman said, “no weight, no texture, no thermal information, well, we’re very, very bad with that.”
    • anonymous
       
      Touch, like all senses, is best used in concert with the others.
  • Touch also turns out to be easy to fool. Among the sensory tricks now being investigated is something called the Pinocchio illusion. Researchers have found that if they vibrate the tendon of the biceps, many people report feeling that their forearm is getting longer, their hand drifting ever further from their elbow. And if they are told to touch the forefinger of the vibrated arm to the tip of their nose, they feel as though their nose was lengthening, too.
    • anonymous
       
      We'll discuss illusions in class, I've never been able to get the Pinocchio illusion to work but we can try it.
  • People who watch a rubber hand being stroked while the same treatment is applied to one of their own hands kept out of view quickly come to believe that the rubber prosthesis is the real thing, and will wince with pain at the sight of a hammer slamming into it.
    • anonymous
       
      This one we can try in class, but I lost my prosthetic hand last year.
  • Biologically, chronologically, allegorically and delusionally, touch is the mother of all sensory systems. It is an ancient sense in evolution: even the simplest single-celled organisms can feel when something brushes up against them and will respond by nudging closer or pulling away. It is the first sense aroused during a baby’s gestation and the last sense to fade at life’s culmination. Patients in a deep vegetative coma who seem otherwise lost to the world will show skin responsiveness when touched by a nurse.
  • “Touch is so central to what we are, to the feeling of being ourselves, that we almost cannot imagine ourselves without it,” said Chris Dijkerman, a neuropsychologist at the Helmholtz Institute of Utrecht University in the Netherlands. “It’s not like vision, where you close your eyes and you don’t see anything. You can’t do that with touch. It’s always there.”
  • For all its antiquity and constancy, touch is not passive or primitive or stuck in its ways. It is our most active sense, our means of seizing the world and experiencing it, quite literally, first hand. Susan J. Lederman, a professor of psychology at Queen’s University in Canada, pointed out that while we can perceive something visually or acoustically from a distance and without really trying, if we want to learn about something tactilely, we must make a move. We must rub the fabric, pet the cat, squeeze the Charmin. And with every touchy foray, Heisenberg’s Uncertainty Principle looms large. “Contact is a two-way street, and that’s not true for vision or audition,” Dr. Lederman said. “If you have a soft object and you squeeze it, you change its shape. The physical world reacts back.”
anonymous

Mind - Research Upends Traditional Thinking on Study Habits - NYTimes.com - 1 views

    • anonymous
       
      This is such a comment complaint of teachers, namely that students act, from year to year, as if they don't remember every even being introduced to something that the current year teacher thinks is review. Many grade level teachers begin the year thinking their predecessors in the previous year didn't do a good job preparing their students.
  • These findings extend well beyond math, even to aesthetic intuitive learning.
  • The finding undermines the common assumption that intensive immersion is the best way to really master a particular genre, or type of creative work, said Nate Kornell, a psychologist at Williams College and the lead author of the study. “What seems to be happening in this case is that the brain is picking up deeper patterns when seeing assortments of paintings; it’s picking up what’s similar and what’s different about them,” often subconsciously.
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  • But at the very least, the cognitive techniques give parents and students, young and old, something many did not have before: a study plan based on evidence, not schoolyard folk wisdom, or empty theorizing.
  • “With many students, it’s not like they can’t remember the material” when they move to a more advanced class, said Henry L. Roediger III, a psychologist at Washington University in St. Louis. “It’s like they’ve never seen it before.”
  • That’s one reason cognitive scientists see testing itself — or practice tests and quizzes — as a powerful tool of learning, rather than merely assessment. The process of retrieving an idea is not like pulling a book from a shelf; it seems to fundamentally alter the way the information is subsequently stored, making it far more accessible in the future.
  • Dr. Roediger uses the analogy of the Heisenberg uncertainty principle in physics, which holds that the act of measuring a property of a particle (position, for example) reduces the accuracy with which you can know another property (momentum, for example): “Testing not only measures knowledge but changes it,” he says — and, happily, in the direction of more certainty, not less.
  • “Testing has such bad connotation; people think of standardized testing or teaching to the test,” Dr. Roediger said. “Maybe we need to call it something else, but this is one of the most powerful learning tools we have.”
  • Motivation matters. So do impressing friends, making the hockey team and finding the nerve to text the cute student in social studies.
  • The more mental sweat it takes to dig it out, the more securely it will be subsequently anchored.
  • “In lab experiments, you’re able to control for all factors except the one you’re studying,” said Dr. Willingham. “Not true in the classroom, in real life. All of these things are interacting at the same time.”
    • anonymous
       
      Perfect explanation of why the so-called "soft" sciences (Psych, Econ, Sociology, etc) are actually quite hard while the "hard" sciences (Physics in particular) are actually compartively easy!
anonymous

Next Big Thing - Literary Scholars Turn to Science - NYTimes.com - 0 views

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    To illustrate what a growing number of literary scholars consider the most exciting area of new research, Lisa Zunshine, a professor of English at the University of Kentucky, refers to an episode from the TV series "Friends." (Follow closely now; this is about the science of English.) Phoebe and Rachel plot to play a joke on Monica and Chandler after they learn the two are secretly dating. The couple discover the prank and try to turn the tables, but Phoebe realizes this turnabout and once again tries to outwit them. As Phoebe tells Rachel, "They don't know that we know they know we know." This layered process of figuring out what someone else is thinking - of mind reading - is both a common literary device and an essential survival skill. Why human beings are equipped with this capacity and what particular brain functions enable them to do it are questions that have occupied primarily cognitive psychologists.
anonymous

Can 'Neuro Lit Crit' Save the Humanities? - NYTimes.com - 0 views

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    "A recent Times article described the use of neurological research and cognitive science in the field of literary theory. "At a time when university literature departments are confronting painful budget cuts, a moribund job market and pointed scrutiny about the purpose and value of an education in the humanities, the cross-pollination of English and psychology is providing a revitalizing lift," the article said. Does this research - "neuro lit" is one of its nicknames - energize literature departments, and, more broadly, generate excitement for the humanities? Is it yet another passing fad in liberal arts education? If the answer is both, why does theory matter, even if we sometimes don't understand what the scholars are saying? "
anonymous

Do Daughters Cause Divorce? - NYTimes.com - 3 views

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    Parents of girls are 5 percent more likely to divorce than parents of boys. Economists first analyzed the data that way in 2003, when Gordon Dahl at the University of Rochester and Enrico Moretti at U.C.L.A., identified that gap, and noted that it widened as you added boys or girls to a family. Parents of three girls, for instance, are 10 percent more likely to split than are parents of three boys. And, they found, an unmarried couple is more likely to marry if they learn their unborn child will be a boy than a girl.
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    Fascinating.
anonymous

Why Language May Shape Our Thoughts - Newsweek - 0 views

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    "When the Viaduct de Millau opened in the south of France in 2004, this tallest bridge in the world won worldwide accolades. German newspapers described how it "floated above the clouds" with "elegance and lightness" and "breathtaking" beauty. In France, papers praised the "immense" "concrete giant." Was it mere coincidence that the Germans saw beauty where the French saw heft and power? Lera Boroditsky thinks not. A psychologist at Stanford University, she has long been intrigued by an age-old question whose modern form dates to 1956, when linguist Benjamin Lee Whorf asked whether the language we speak shapes the way we think and see the world. If so, then language is not merely a means of expressing thought, but a constraint on it, too. Although philosophers, anthropologists, and others have weighed in, with most concluding that language does not shape thought in any significant way, the field has been notable for a distressing lack of empiricism-as in testable hypotheses and actual data."
anonymous

Karl Popper and Antarctic Ice: The Climate Debate and Its Problems - 0 views

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    The Core: College Magazine of the University of Chicago
anonymous

Observatory - Referees' Calls May Get Lost in Their Translation - NYTimes.com - 0 views

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    "Fans who angrily questioned several calls made by soccer referees in this year's World Cup won't be surprised at a report in the journal PLoS One that found inherent bias in referees. They might, however, be surprised that the bias is perceptual. The study found that soccer experts whose languages read left to right call more fouls when the action moves in the opposite direction, or right to left. "We are used to moving our eyes left to right so we have a preference for viewing events left to right," said Alexander Kranjec, a neuroscientist at the University of Pennsylvania and the study's lead author. "
anonymous

Writing As a Block For Asians - NYTimes.com - 0 views

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    "But a better understanding of Asian writing systems has not stopped Western experts from making grand claims about their virtues and limitations. The latest scholar to venture into such politically sensitive territory is William C. Hannas, a linguist who speaks 12 languages and works as a senior officer at the Foreign Broadcast Information Service, a federal agency in Washington. In a polemical new book, ''The Writing on the Wall: How Asian Orthography Curbs Creativity'' (University of Pennsylvania Press), Mr. Hannas blames the writing systems of China, Japan and Korea for what he says is East Asia's failure to make significant scientific and technological breakthroughs compared to Western nations. Mr. Hannas's logic goes like this: because East Asian writing systems lack the abstract features of alphabets, they hamper the kind of analytical and abstract thought necessary for scientific creativity. "
anonymous

The Lost Languages, Found in New York - NYTimes.com - 0 views

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    "While there is no precise count, some experts believe New York is home to as many as 800 languages - far more than the 176 spoken by students in the city's public schools or the 138 that residents of Queens, New York's most diverse borough, listed on their 2000 census forms.\n\n"It is the capital of language density in the world," said Daniel Kaufman, an adjunct professor of linguistics at the Graduate Center of the City University of New York. "We're sitting in an endangerment hot spot where we are surrounded by languages that are not going to be around even in 20 or 30 years." "
anonymous

The Infant Brain - BBC4 - In Our Time - 0 views

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    "Melvyn Bragg and guests Usha Goswami, Annette Karmiloff-Smith and Denis Mareschal discuss what new research reveals about the infant brain. For obvious reasons, what happens in the minds of very young, pre-verbal children is elusive. But over the last century, the psychology of early childhood has become a major subject of study. Some scientists and researchers have argued that children develop skills only gradually, others that many of our mental attributes are innate. Sigmund Freud concluded that infants didn't differentiate themselves from their environment. The pioneering Swiss child psychologist Jean Piaget thought babies' perception of the world began as a 'blooming, buzzing confusion' of colour, light and sound, before they developed a more sophisticated worldview, first through the senses and later through symbol. More recent scholars such as the leading American theoretical linguist Noam Chomsky have argued that the fundamentals of language are there from birth. Chomsky has famously argued that all humans have an innate, universally applicable grammar. Over the last ten to twenty years, new research has shed fresh light on important aspects of the infant brain which have long been shrouded in mystery or mired in dispute, from the way we start to learn to speak to the earliest understanding that other people have their own minds."
anonymous

Benoît Mandelbrot, Novel Mathematician, Dies at 85 - Obituary (Obit) - NYTime... - 0 views

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    "Dr. Mandelbrot coined the term "fractal" to refer to a new class of mathematical shapes whose uneven contours could mimic the irregularities found in nature. "Applied mathematics had been concentrating for a century on phenomena which were smooth, but many things were not like that: the more you blew them up with a microscope the more complexity you found," said David Mumford, a professor of mathematics at Brown University. "He was one of the primary people who realized these were legitimate objects of study." "
anonymous

Science Weekly podcast: What the brain can and can't do; Are we reaching the end of dis... - 0 views

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    "Professor Barry Smith, director of the Institute of Philosophy at the University of London explores what happens inside our heads when we recognise a friend or reach for a cup of coffee."
anonymous

Harvard Case Against Marc Hauser Is Hard to Define - NYTimes.com - 0 views

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    "The still unresolved case of Marc Hauser, the researcher accused by Harvard of scientific misconduct, points to the painful slowness of the government-university procedure for resolving such charges. It also underscores the difficulty of defining error in a field like animal cognition where inconsistent results are common. "
anonymous

Almost Before We Spoke, We Swore - New York Times - 2 views

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    "Incensed by what it sees as a virtual pandemic of verbal vulgarity issuing from the diverse likes of Howard Stern, Bono of U2 and Robert Novak, the United States Senate is poised to consider a bill that would sharply increase the penalty for obscenity on the air. By raising the fines that would be levied against offending broadcasters some fifteenfold, to a fee of about $500,000 per crudity broadcast, and by threatening to revoke the licenses of repeat polluters, the Senate seeks to return to the public square the gentler tenor of yesteryear, when seldom were heard any scurrilous words, and famous guys were not foul mouthed all day. Yet researchers who study the evolution of language and the psychology of swearing say that they have no idea what mystic model of linguistic gentility the critics might have in mind. Cursing, they say, is a human universal. Every language, dialect or patois ever studied, living or dead, spoken by millions or by a small tribe, turns out to have its share of forbidden speech, some variant on comedian George Carlin's famous list of the seven dirty words that are not supposed to be uttered on radio or television. "
anonymous

Keith Olbermann of MSNBC Suspended Over Donations - NYTimes.com - 0 views

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    "Keith Olbermann, the leading liberal voice on American television in the age of Obama, was suspended Friday after his employer, MSNBC, discovered he made campaign contributions to three Democrats last month. The indefinite suspension was a stark display of the clash between objectivity and opinion in television journalism. While Mr. Olbermann is anchor of what is essentially the "Democratic Nightly News," the decision affirmed that he was being held to the same standards as other employees of MSNBC and its parent, NBC News, both of which answer to NBC Universal. Most journalistic outlets discourage or directly prohibit campaign contributions by employees. "
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    Olbermann is the antithesis of Bill O'Reilly on Fox.
anonymous

YouTube - WHERE GOOD IDEAS COME FROM by Steven Johnson - 1 views

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    "One of our most innovative, popular thinkers takes on-in exhilarating style-one of our key questions: Where do good ideas come from? With Where Good Ideas Come From, Steven Johnson pairs the insight of his bestselling Everything Bad Is Good for You and the dazzling erudition of The Ghost Map and The Invention of Air to address an urgent and universal question: What sparks the flash of brilliance? How does groundbreaking innovation happen? Answering in his infectious, culturally omnivorous style, using his fluency in fields from neurobiology to popular culture, Johnson provides the complete, exciting, and encouraging story of how we generate the ideas that push our careers, our lives, our society, and our culture forward. Beginning with Charles Darwin's first encounter with the teeming ecosystem of the coral reef and drawing connections to the intellectual hyperproductivity of modern megacities and to the instant success of YouTube, Johnson shows us that the question we need to ask is, What kind of environment fosters the development of good ideas? His answers are never less than revelatory, convincing, and inspiring as Johnson identifies the seven key principles to the genesis of such ideas, and traces them across time and disciplines. Most exhilarating is Johnson's conclusion that with today's tools and environment, radical innovation is extraordinarily accessible to those who know how to cultivate it. Where Good Ideas Come From is essential reading for anyone who wants to know how to come up with tomorrow's great ideas."
anonymous

How Much Does Birth Order Shape Our Lives? : NPR - 1 views

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    "There are lots of expectations and assumptions about how birth order may shape our adult lives, and many of them go back ages. Centuries ago, the oldest son had huge incentives to stay on track and live up to family expectations - that's because, by tradition, he was set to inherit almost everything. "Historically the practice of primogeniture was very common in Europe," says Frank Sulloway, a visiting scholar at the Institute of Personality and Social Research at the University of California, Berkeley. "So firstborns had every reason to preserve the status quo and be on good terms with their parents. Now you may think any "first born" effect would have completely disappeared in modern times. But not so, say experts who study birth order. Researchers first examined the status of firstborns among Washington power brokers in 1972."
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