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Javier E

Why Some Evangelicals Are Trying to Stop Obsessing Over Pre-Marital Sex - Abigail Rine ... - 0 views

  • Unclean, taking particular issue with the words and metaphors Christians use to frame sexual sin, especially for women. Beck argues that using the metaphor of purity imports a "psychology of contamination into our moral and spiritual lives," and this contamination is viewed as a permanent state, one beyond restoration.
  • Moreover, while women are subjected to the language of purity and seen as irreparably contaminated after having sex, the same is not true for men. According to Beck, a boy losing his virginity is seen as a "mistake, a stumbling," a mode of behavior that can be changed and rehabilitated. This, he argues, exposes a double standard at work in the language of sexual purity: women who have sex are seen as "damaged goods," but men who have sex are not.
  • Broadway proposes emphasizing an overarching ideal of "self-giving love" rather than abstinence, which would put a positive spin on premarital chastity, as well as cultivate deeper awareness of "unhealthy sexual dynamics within marriage," from sexual selfishness to "outright abuse."
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  • For Beck, moving past purity involves less emphasis "on the physical act of sex and how that physical act is 'defiling' and more upon issues related to covenant faithfulness, care, and harm. ... God's interest in sex, then, is less puritanical than a concern about how we hurt and damage each other, physically and emotionally, in ways that often leave lifelong scars."
  • Although each of these post-purity perspectives diverges from the current evangelical narrative to varying degrees, the common thread among them seems to be a desire for a more holistic sexual ethic, one that remains thoroughly Christian while shifting away from the metaphor of purity to concepts of sexual health and wholeness
jmfinizio

Hot Pockets recalled over potential glass and plastic contamination - CNN - 0 views

  • Nestlé Prepared Foods is recalling certain pepperoni Hot Pockets over concerns they may be contaminated with pieces of glass and hard plastic,
  • health hazard situation where there is a reasonable probability that the use of the product will cause serious, adverse health consequences or death,"
  • There are four consumer complaints of extraneous materials inside the Hot Pockets, the Food Safety and Inspection Service said.
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  • Consumers who purchased the recalled product should throw it away or return it to the place of purchase, the Food Safety and Inspection Service said.
Javier E

The Disease Detective - The New York Times - 1 views

  • What’s startling is how many mystery infections still exist today.
  • More than a third of acute respiratory illnesses are idiopathic; the same is true for up to 40 percent of gastrointestinal disorders and more than half the cases of encephalitis (swelling of the brain).
  • Up to 20 percent of cancers and a substantial portion of autoimmune diseases, including multiple sclerosis and rheumatoid arthritis, are thought to have viral triggers, but a vast majority of those have yet to be identified.
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  • Globally, the numbers can be even worse, and the stakes often higher. “Say a person comes into the hospital in Sierra Leone with a fever and flulike symptoms,” DeRisi says. “After a few days, or a week, they die. What caused that illness? Most of the time, we never find out. Because if the cause isn’t something that we can culture and test for” — like hepatitis, or strep throat — “it basically just stays a mystery.”
  • It would be better, DeRisi says, to watch for rare cases of mystery illnesses in people, which often exist well before a pathogen gains traction and is able to spread.
  • Based on a retrospective analysis of blood samples, scientists now know that H.I.V. emerged nearly a dozen times over a century, starting in the 1920s, before it went global.
  • Zika was a relatively harmless illness before a single mutation, in 2013, gave the virus the ability to enter and damage brain cells.
  • The beauty of this approach” — running blood samples from people hospitalized all over the world through his system, known as IDseq — “is that it works even for things that we’ve never seen before, or things that we might think we’ve seen but which are actually something new.”
  • In this scenario, an undiscovered or completely new virus won’t trigger a match but will instead be flagged. (Even in those cases, the mystery pathogen will usually belong to a known virus family: coronaviruses, for instance, or filoviruses that cause hemorrhagic fevers like Ebola and Marburg.)
  • And because different types of bacteria require specific conditions in order to grow, you also need some idea of what you’re looking for in order to find it.
  • The same is true of genomic sequencing, which relies on “primers” designed to match different combinations of nucleotides (the building blocks of DNA and RNA).
  • Even looking at a slide under a microscope requires staining, which makes organisms easier to see — but the stains used to identify bacteria and parasites, for instance, aren’t the same.
  • The practice that DeRisi helped pioneer to skirt this problem is known as metagenomic sequencing
  • Unlike ordinary genomic sequencing, which tries to spell out the purified DNA of a single, known organism, metagenomic sequencing can be applied to a messy sample of just about anything — blood, mud, seawater, snot — which will often contain dozens or hundreds of different organisms, all unknown, and each with its own DNA. In order to read all the fragmented genetic material, metagenomic sequencing uses sophisticated software to stitch the pieces together by matching overlapping segments.
  • The assembled genomes are then compared against a vast database of all known genomic sequences — maintained by the government-run National Center for Biotechnology Information — making it possible for researchers to identify everything in the mix
  • Traditionally, the way that scientists have identified organisms in a sample is to culture them: Isolate a particular bacterium (or virus or parasite or fungus); grow it in a petri dish; and then examine the result under a microscope, or use genomic sequencing, to understand just what it is. But because less than 2 percent of bacteria — and even fewer viruses — can be grown in a lab, the process often reveals only a tiny fraction of what’s actually there. It’s a bit like planting 100 different kinds of seeds that you found in an old jar. One or two of those will germinate and produce a plant, but there’s no way to know what the rest might have grown into.
  • Such studies have revealed just how vast the microbial world is, and how little we know about it
  • “The selling point for researchers is: ‘Look, this technology lets you investigate what’s happening in your clinic, whether it’s kids with meningitis or something else,’” DeRisi said. “We’re not telling you what to do with it. But it’s also true that if we have enough people using this, spread out all around the world, then it does become a global network for detecting emerging pandemics
  • One study found more than 1,000 different kinds of viruses in a tiny amount of human stool; another found a million in a couple of pounds of marine sediment. And most were organisms that nobody had seen before.
  • After the Biohub opened in 2016, one of DeRisi’s goals was to turn metagenomics from a rarefied technology used by a handful of elite universities into something that researchers around the world could benefit from
  • metagenomics requires enormous amounts of computing power, putting it out of reach of all but the most well-funded research labs. The tool DeRisi created, IDseq, made it possible for researchers anywhere in the world to process samples through the use of a small, off-the-shelf sequencer, much like the one DeRisi had shown me in his lab, and then upload the results to the cloud for analysis.
  • he’s the first to make the process so accessible, even in countries where lab supplies and training are scarce. DeRisi and his team tested the chemicals used to prepare DNA for sequencing and determined that using as little as half the recommended amount often worked fine. They also 3-D print some of the labs’ tools and replacement parts, and offer ongoing training and tech support
  • The metagenomic analysis itself — normally the most expensive part of the process — is provided free.
  • But DeRisi’s main innovation has been in streamlining and simplifying the extraordinarily complex computational side of metagenomics
  • IDseq is also fast, capable of doing analyses in hours that would take other systems weeks.
  • “What IDseq really did was to marry wet-lab work — accumulating samples, processing them, running them through a sequencer — with the bioinformatic analysis,”
  • “Without that, what happens in a lot of places is that the researcher will be like, ‘OK, I collected the samples!’ But because they can’t analyze them, the samples end up in the freezer. The information just gets stuck there.”
  • Meningitis itself isn’t a disease, just a description meaning that the tissues around the brain and spinal cord have become inflamed. In the United States, bacterial infections can cause meningitis, as can enteroviruses, mumps and herpes simplex. But a high proportion of cases have, as doctors say, no known etiology: No one knows why the patient’s brain and spinal tissues are swelling.
  • When Saha and her team ran the mystery meningitis samples through IDseq, though, the result was surprising. Rather than revealing a bacterial cause, as expected, a third of the samples showed signs of the chikungunya virus — specifically, a neuroinvasive strain that was thought to be extremely rare. “At first we thought, It cannot be true!” Saha recalls. “But the moment Joe and I realized it was chikungunya, I went back and looked at the other 200 samples that we had collected around the same time. And we found the virus in some of those samples as well.”
  • Until recently, chikungunya was a comparatively rare disease, present mostly in parts of Central and East Africa. “Then it just exploded through the Caribbean and Africa and across Southeast Asia into India and Bangladesh,” DeRisi told me. In 2011, there were zero cases of chikungunya reported in Latin America. By 2014, there were a million.
  • Chikungunya is a mosquito-borne virus, but when DeRisi and Saha looked at the results from IDseq, they also saw something else: a primate tetraparvovirus. Primate tetraparvoviruses are almost unknown in humans, and have been found only in certain regions. Even now, DeRisi is careful to note, it’s not clear what effect the virus has on people. “Maybe it’s dangerous, maybe it isn’t,” DeRisi says. “But I’ll tell you what: It’s now on my radar.
  • it reveals a landscape of potentially dangerous viruses that we would otherwise never find out about. “What we’ve been missing is that there’s an entire universe of pathogens out there that are causing disease in humans,” Imam notes, “ones that we often don’t even know exist.”
  • “The plan was, Let’s let researchers around the world propose studies, and we’ll choose 10 of them to start,” DeRisi recalls. “We thought we’d get, like, a couple dozen proposals, and instead we got 350.”
  • Metagenomic sequencing is especially good at what scientists call “environmental sampling”: identifying, say, every type of bacteria present in the gut microbiome, or in a teaspoon of seawater.
  • “When you draw blood from someone who has a fever in Ghana, you really don’t know very much about what would normally be in their blood without fever — let alone about other kinds of contaminants in the environment. So how do you interpret the relevance of all the things you’re seeing?”
  • Such criticisms have led some to say that metagenomics simply isn’t suited to the infrastructure of developing countries. Along with the problem of contamination, many labs struggle to get the chemical reagents needed for sequencing, either because of the cost or because of shipping and customs holdups
  • we’re less likely to be caught off-guard. “With Ebola, there’s always an issue: Where’s the virus hiding before it breaks out?” DeRisi explains. “But also, once we start sampling people who are hospitalized more widely — meaning not just people in Northern California or Boston, but in Uganda, and Sierra Leone, and Indonesia — the chance of disastrous surprises will go down. We’ll start seeing what’s hidden.”
kaylynfreeman

Why We Already Have False Memories of the COVID-19 Crisis | Psychology Today - 1 views

  • New research sheds light on spotting false memories of emotional events.
  • Have you heard people 'remember' things about the COVID-19 crisis that you know can't be right?
  • Or maybe you have a friend who keeps merging memories of social distancing guidelines?
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  • Research has repeatedly shown that false memories can feel incredibly real and can be multi-sensory: In some, we can hear, feel, or see things, just like in real memories. Indeed, to be considered a false memory it can't be a lie, it needs to be part of our reality.
  • I found that if someone has a false memory, we probably can't tell just by looking at the memory. What may be more surprising is that people also seem to be no better than chance at identifying true memories.
  • Source confusion. What we learn from multiple sources about the same topic can very quickly become confused.
  • In both studies, participants were no better than chance at spotting whether a memory was true or false
  • It seems people were actively relying on bad cues when listening to the memories, and somehow these cues made them worse than had they tossed a coin.
  • Participants watched a video of a person recounting a true emotional memory, and the same person recount a false memory. They were told "All, some, or none of the videos you are about to watch involve memories of real accounts. Your task is to identify after each video whether you think the account described actually happened or not.".
  • What this means is that if you already have false memories of what you have done, heard, or seen during the COVID-19 pandemic, you probably can't spot them.
  • This can lead to creating false memories based on source confusion, which is when we misattribute where you learned something.
  • During these unusual times you may want to consider implementing additional safeguards to keep your memories safe.
  • Co-witness contamination. We are all witnesses of this world event, witnesses who are talking to each other all the time. If the COVID-19 pandemic were a crime scene, this would be really bad news.
  • Sameness. Every day we hear unprecedented news or horrific medical stories. But after weeks or months of the same type of information, with a reduction in the amount of new and exciting things happening elsewhere, it gets difficult to separate this long stream of information into meaningful bits.
  • Too late? Already think you or someone else has false memories? Look for independent evidence. You can check the news to see when you actually went into lockdown, or whether you tweeted something about how you felt, or maybe ask a friend what you said to them. That can help establish whether you have a false memory or not.
  • If you want reliable memories of this highly emotional time you need to keep a journal.
  • Assume that those feelings, ideas, fears, beliefs, and experiences will be forgotten. People are generally bad at remembering these details later on.
  • Fake news. Some of the content we see online will be false or misleading.
  • Research has repeatedly shown that false memories can feel incredibly real and can be multi-sensory: In some, we can hear, feel, or see things, just like in real memories.
  • But this week new research takes this even further, and shows that false memories also look real to other people.
  • Both your memory of the news, and your memories of emotional events that are happening in your life are possibly being changed or contaminated.
  • Prevention and evidence are what you need, because it's likely that once you have a false memory, neither you nor anyone else will be able to spot it.
anniina03

Coronavirus: Why some countries wear face masks and others don't - BBC News - 0 views

  • Since the start of the coronavirus outbreak some places have fully embraced wearing face masks, and anyone caught without one risks becoming a social pariah.But in many other parts of the world, from the UK and the US to Sydney and Singapore, it's still perfectly acceptable to walk around bare-faced.
  • the official advice from the World Health Organization has been clear. Only two types of people should wear masks: those who are sick and show symptoms, and those who are caring for people who are suspected to have the coronavirus.
  • a mask is not seen as reliable protection, given that current research shows the virus is spread by droplets and contact with contaminated surfaces. So it could protect you, but only in certain situations such as when you're in close quarters with others where someone infected might sneeze or cough near your face.
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  • Removing a mask requires special attention to avoid hand contamination, and it could also breed a false sense of security.
  • in some parts of Asia everyone now wears a mask by default - it is seen as safer and more considerate.
  • In mainland China, Hong Kong, Japan, Thailand and Taiwan, the broad assumption is that anyone could be a carrier of the virus, even healthy people. So in the spirit of solidarity, you need to protect others from yourself.
  • In East Asia, many people are used to wearing masks when they are sick or when it's hayfever season, because it's considered impolite to be sneezing or coughing openly.
  • The 2003 Sars virus outbreak, which affected several countries in the region, also drove home the importance of wearing masks, particularly in Hong Kong, where many died as a result of the virus.So one key difference between these societies and Western ones, is that they have experienced contagion before - and the memories are still fresh and painful.
  • Some argue that ubiquitous mask wearing, as a very visual reminder of the dangers of the virus, could actually act as a "behavioural nudge" to you and others for overall better personal hygiene.
  • But there are downsides of course. Some places such as Japan, Indonesia and Thailand are facing shortages at the moment, and South Korea has had to ration out masks.
  • There is the fear that people may end up re-using masks - which is unhygienic - use masks sold on the black market, or wear homemade masks, which could be of inferior quality and essentially useless.
  • People who do not wear masks in these places have also been stigmatised, to the point that they are shunned and blocked from shops and buildings.
  • In countries where mask wearing is not the norm, such as the West, those who do wear masks have been shunned or even attacked. It hasn't helped that many of these mask wearers are Asians.
kushnerha

Why People Are Confused About What Experts Really Think - The New York Times - 2 views

  • GIVEN the complexities of the modern world, we all have to rely on expert opinion. Are G.M.O. foods safe? Is global warming real? Should children be vaccinated for measles? We don’t have the time or the training to adjudicate these questions ourselves. We defer to the professionals.
  • And to find out what the experts think, we typically rely on the news media. This creates a challenge for journalists: There are many issues on which a large majority of experts agree but a small number hold a dissenting view. Is it possible to give voice to experts on both sides — standard journalistic practice — without distorting the public’s perception of the level of disagreement?
  • This can be hard to do. Indeed, critics argue that journalists too often generate “false balance,” creating an impression of disagreement when there is, in fact, a high level of consensus. One solution, adopted by news organizations such as the BBC, is “weight of evidence” reporting, in which the presentation of conflicting views is supplemented by an indication of where the bulk of expert opinion lies.
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  • Both studies suggest that “weight of evidence” reporting is an imperfect remedy. It turns out that hearing from experts on both sides of an issue distorts our perception of consensus — even when we have all the information we need to correct that misperception.
  • In one study, all the participants were presented with a numerical summary, drawn from a panel of experts convened by the University of Chicago, of the range of expert opinion on certain economic issues.
  • One group of participants, however, was presented not only with the numerical summary of expert opinion but also with an excerpted comment from one expert on either side of an issue.
  • Then, all the participants were asked to rate their perception of the extent to which the experts agreed with one another on each issue. Even though both had a precise count of the number of experts on either side, the participants who also read the comments of the opposing experts gave ratings that did not distinguish as sharply between the high-consensus and the low-consensus issues. In other words, being exposed to the conflicting comments made it more difficult for participants to distinguish the issues most experts agreed on (such as carbon tax) from those for which there was substantial disagreement (such as minimum wage).
  • This distorting influence affected not only the participants’ perception of the degree of consensus, but also their judgments of whether there was sufficient consensus to use it to guide public policy.
  • What explains this cognitive glitch? One possibility is that when we are presented with comments from experts on either side of an issue, we produce a mental representation of the disagreement that takes the form of one person on either side, which somehow contaminates our impression of the distribution of opinions in the larger population of experts.
  • Another possibility is that we may just have difficulty discounting the weight of a plausible argument, even when we know it comes from an expert whose opinion is held by only a small fraction of his or her peers.
  • It’s also possible that the mere presence of conflict (in the form of contradictory expert comments) triggers a general sense of uncertainty in our minds, which in turn colors our perceptions of the accuracy of current expert understanding of an issue.
  • the implications are worrisome. Government action is guided in part by public opinion. Public opinion is guided in part by perceptions of what experts think. But public opinion may — and often does — deviate from expert opinion, not simply, it seems, because the public refuses to acknowledge the legitimacy of experts, but also because the public may not be able to tell where the majority of expert opinion lies.
Javier E

Elizabeth Loftus interview: False-memory research on eyewitnesses, child abuse recovere... - 1 views

  • psychologist Elizabeth Loftus of the University of California–Irvine, has made her name working on false memory. She tells Alison George how recollections can be conjured up,
  • What exactly is going on when we retrieve a memory? EL: When we remember something, we're taking bits and pieces of experience—sometimes from different times and places—and bringing it all together to construct what might feel like a recollection but is actually a construction. The process of calling it into conscious awareness can change it, and now you're storing something that's different
  • The memory of witnesses to crimes and accidents was a natural place to go. In particular I looked at what happens when people are questioned about their experiences. I would ultimately see those questions as a means by which the memories got contaminated.
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  • Depending on the study, you might get as many as 50 percent of people falling for the suggestion and developing a complete or partial false memory.
  • Is it the power of suggestion from a therapist that creates these "memories," then? EL: Yes, a lot of the cases involve suggestive psychotherapy. But you don't absolutely need the therapy. You can get suggestion from the culture and the environment, like when somebody turns on Oprah and sees one of these repressed-memory therapists talking, then believes this has happened to them.
  • How do you plant these memories? EL: We use a "false feedback" technique. We gather a whole bunch of data from you, about your personality, thoughts about different foods, all kinds of things. Later, we hand you this computerized profile, which reveals certain things that probably happened when you were a child. In the middle of the list is, say, that you got sick eating strawberry ice cream. We give you false feedback about your data, and then encourage you to elaborate and imagine. Later we ascertain whether you have a belief that it happened to you. Then we offer you a choice from all these different foods. In that example we found that participants didn't want strawberry ice cream as much.
  • bad governments, bad people, they don't have requirements of conduct. When we recently published a study about planting false memories among U.S. soldiers, I was worried we were putting out a recipe for how you can do horrible things to somebody and then wipe their memory away.
  • Is there any way to distinguish a false memory from a real one? EL: Without independent corroboration, little can be done to tell a false memory from a true one.
Javier E

The exoneration of Kash Register and the problem of false eyewitness testimony. - 0 views

  • according to Brandon Garrett, a law professor at the University of Virginia and the author of Convicting the Innocent, eyewitness misidentifications have played a leading role in nearly 75 percent of 250 convictions overturned by DNA evidence between 1989 and 2010. In more than one-half of those exonerations, the eyewitnesses start off unsure, a “glaring sign” of potential trouble as Garrett puts it, yet appear to become increasingly certain over time. This often corresponds with police practices like suggestive photo arrays, lineups, and even well-intentioned comments like “Good job!” after a witness makes an identification, however tentative. All of this can cause “contamination” of memory, Garrett says so that “there is no way to know after the fact whether the eyewitness could have actually picked the person with any degree of confidence.”
demetriar

How Many of Your Memories Are Fake? - The Atlantic - 3 views

  • Special K for breakfast. Liverwurst and cheese for lunch. And I remember the song ‘You've Got Personality’ was playing as on the radio as I pulled up for work,” said Healy, one of 50 confirmed people in the United States with Highly Superior Autobiographical Memory, an uncanny ability to remember dates and events.
  • New research released this week has found that even people with phenomenal memory are susceptible to having “false memories,” suggesting that “memory distortions are basic and widespread in humans, and it may be unlikely that anyone is immune,” according to the authors of the study published in Proceedings of the National Academy of Sciences (PNAS).
  • Professor Elizabeth Loftus, who has spent decades researching how memories can become contaminated with people remembering—sometimes quite vividly and confidently—events that never happened. Loftus has found that memories can be planted in someone’s mind if they are exposed to misinformation after an event, or if they are asked suggestive questions about the past
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  • Loftus’s research has already rattled our justice system, which relies so heavily on eyewitness testimonies.
  • “It’s so powerful when somebody tells you something and they have a lot of detail,” Loftus said. “Especially when they express emotion. To just say, ‘Oh my god it must be true.’ But all those characteristics are also true of false memories, particularly the heavily rehearsed ones that you ruminate over. They can be very detailed. You can be confident. You can be emotional. So you need independent corroboration.”
  • When later asked about the events, the superior memory subjects indicated the erroneous facts as truth at about the same rate as people with normal memory.
  • been able to successfully convince ordinary people that they were lost in a mall in their childhood, pointed out that false memory recollections also occur among high profile people.
  • All memory, as McGaugh explained, is colored with bits of life experiences. When people recall, “they are reconstructing,” he said. “It doesn't mean it’s totally false. It means that they’re telling a story about themselves and they’re integrating things they really do remember in detail, with things that are generally true.”
  • “puzzling why (Highly Superior Autobiographical Memory) individuals remember some trivial details, such as what they had for lunch 10 years ago, but not others, such as words on a word list or photographs in a slideshow,” Patihis and colleagues noted in the PNAS study. “The answer to this may be that they may extract some personally relevant meaning from only some trivial details and weave them into the narrative for a given day.”
  • For all of us, the stronger the emotion attached to a moment, the more likely those parts of our brains involved in memory will become activated.
  • “Why did evolution do that?” McGaugh said. “Because it was essential for our survival.
  • We now know animals are likely susceptible to memory distortions too, as MIT researchers recently were able to successfully plant false memories in mice.
  • “We’re all creating stories. Our lives are stories in that sense.”
  • “but you as the writer have the obligation to get as close to the truth as you possibly can,” Meyer said
  • The mind and its memory do not just record and retrieve information and experiences, but also infer, fill in gaps, and construct, wrote Bryan Boyd wrote in On the Origin of Stories. “Episodic memory’s failure to provide exact replicas of experiences appears to not be a limitation of memory but an adaptive design.”
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    This is an interesting article about the fallacy of memory, and our perceptions of our memory.
Javier E

Opinion | Why Covid's Airborne Transmission Was Acknowledged So Late - The New York Times - 0 views

  • A week ago, more than a year after the World Health Organization declared that we face a pandemic, a page on its website titled “Coronavirus Disease (Covid-19): How Is It Transmitted?” got a seemingly small update.
  • The revised response still emphasizes transmission in close contact but now says it may be via aerosols — smaller respiratory particles that can float — as well as droplets. It also adds a reason the virus can also be transmitted “in poorly ventilated and/or crowded indoor settings,” saying this is because “aerosols remain suspended in the air or travel farther than 1 meter.”
  • on Friday, the Centers for Disease Control and Prevention also updated its guidance on Covid-19, clearly saying that inhalation of these smaller particles is a key way the virus is transmitted, even at close range, and put it on top of its list of how the disease spreads.
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  • But these latest shifts challenge key infection control assumptions that go back a century, putting a lot of what went wrong last year in context
  • They may also signal one of the most important advancements in public health during this pandemic.
  • If the importance of aerosol transmission had been accepted early, we would have been told from the beginning that it was much safer outdoors, where these small particles disperse more easily, as long as you avoid close, prolonged contact with others.
  • We would have tried to make sure indoor spaces were well ventilated, with air filtered as necessary.
  • Instead of blanket rules on gatherings, we would have targeted conditions that can produce superspreading events: people in poorly ventilated indoor spaces, especially if engaged over time in activities that increase aerosol production, like shouting and singing
  • We would have started using masks more quickly, and we would have paid more attention to their fit, too. And we would have been less obsessed with cleaning surfaces.
  • The implications of this were illustrated when I visited New York City in late April — my first trip there in more than a year.
  • A giant digital billboard greeted me at Times Square, with the message “Protecting yourself and others from Covid-19. Guidance from the World Health Organization.”
  • That billboard neglected the clearest epidemiological pattern of this pandemic: The vast majority of transmission has been indoors, sometimes beyond a range of three or even six feet. The superspreading events that play a major role in driving the pandemic occur overwhelmingly, if not exclusively, indoors.
  • The billboard had not a word about ventilation, nothing about opening windows or moving activities outdoors, where transmission has been rare and usually only during prolonged and close contact. (Ireland recently reported 0.1 percent of Covid-19 cases were traced to outdoor transmission.)
  • Mary-Louise McLaws, an epidemiologist at the University of New South Wales in Sydney, Australia, and a member of the W.H.O. committees that craft infection prevention and control guidance, wanted all this examined but knew the stakes made it harder to overcome the resistance. She told The Times last year, “If we started revisiting airflow, we would have to be prepared to change a lot of what we do.” She said it was a very good idea, but she added, “It will cause an enormous shudder through the infection control society.”
  • In contrast, if the aerosols had been considered a major form of transmission, in addition to distancing and masks, advice would have centered on ventilation and airflow, as well as time spent indoors. Small particles can accumulate in enclosed spaces, since they can remain suspended in the air and travel along air currents. This means that indoors, three or even six feet, while helpful, is not completely protective, especially over time.
  • To see this misunderstanding in action, look at what’s still happening throughout the world. In India, where hospitals have run out of supplemental oxygen and people are dying in the streets, money is being spent on fleets of drones to spray anti-coronavirus disinfectant in outdoor spaces. Parks, beaches and outdoor areas keep getting closed around the world. This year and last, organizers canceled outdoor events for the National Cherry Blossom Festival in Washington, D.C. Cambodian customs officials advised spraying disinfectant outside vehicles imported from India. The examples are many.
  • Meanwhile, many countries allowed their indoor workplaces to open but with inadequate aerosol protections. There was no attention to ventilation, installing air filters as necessary or even opening windows when possible, more to having people just distancing three or six feet, sometimes not requiring masks beyond that distance, or spending money on hard plastic barriers, which may be useless at best
  • clear evidence doesn’t easily overturn tradition or overcome entrenched feelings and egos. John Snow, often credited as the first scientific epidemiologist, showed that a contaminated well was responsible for a 1854 London cholera epidemic by removing the suspected pump’s handle and documenting how the cases plummeted afterward. Many other scientists and officials wouldn’t believe him for 12 years, when the link to a water source showed up again and became harder to deny.
  • Along the way to modern public health shaped largely by the fight over germs, a theory of transmission promoted by the influential public health figure Charles Chapin took hold
  • Dr. Chapin asserted in the early 1900s that respiratory diseases were most likely spread at close range by people touching bodily fluids or ejecting respiratory droplets, and did not allow for the possibility that such close-range infection could occur by inhaling small floating particles others emitted
  • He was also concerned that belief in airborne transmission, which he associated with miasma theories, would make people feel helpless and drop their guard against contact transmission. This was a mistake that would haunt infection control for the next century and more.
  • It was in this context in early 2020 that the W.H.O. and the C.D.C. asserted that SARS-CoV-2 was transmitted primarily via these heavier, short-range droplets, and provided guidance accordingly
  • Amid the growing evidence, in July, hundreds of scientists signed an open letter urging the public health agencies, especially the W.H.O., to address airborne transmission of the coronavirus.
  • Last October, the C.D.C. published updated guidance acknowledging airborne transmission, but as a secondary route under some circumstances, until it acknowledged airborne transmission as crucial on Friday. And the W.H.O. kept inching forward in its public statements, most recently a week ago.
  • Linsey Marr, a professor of engineering at Virginia Tech who made important contributions to our understanding of airborne virus transmission before the pandemic, pointed to two key scientific errors — rooted in a lot of history — that explain the resistance, and also opened a fascinating sociological window into how science can get it wrong and why.
  • Dr. Marr said that if you inhale a particle from the air, it’s an aerosol.
  • biomechanically, she said, nasal transmission faces obstacles, since nostrils point downward and the physics of particles that large makes it difficult for them to move up the nose. And in lab measurements, people emit far more of the easier-to-inhale aerosols than the droplets, she said, and even the smallest particles can be virus laden, sometimes more so than the larger ones, seemingly because of how and where they are produced in the respiratory tract.
  • Second, she said, proximity is conducive to transmission of aerosols as well because aerosols are more concentrated near the person emitting them. In a twist of history, modern scientists have been acting like those who equated stinky air with disease, by equating close contact, a measure of distance, only with the larger droplets, a mechanism of transmission, without examination.
  • Since aerosols also infect at close range, measures to prevent droplet transmission — masks and distancing — can help dampen transmission for airborne diseases as well. However, this oversight led medical people to circularly assume that if such measures worked at all, droplets must have played a big role in their transmission.
  • Another dynamic we’ve seen is something that is not unheard-of in the history of science: setting a higher standard of proof for theories that challenge conventional wisdom than for those that support it.
  • Another key problem is that, understandably, we find it harder to walk things back. It is easier to keep adding exceptions and justifications to a belief than to admit that a challenger has a better explanation.
  • The ancients believed that all celestial objects revolved around the earth in circular orbits. When it became clear that the observed behavior of the celestial objects did not fit this assumption, those astronomers produced ever-more-complex charts by adding epicycles — intersecting arcs and circles — to fit the heavens to their beliefs.
  • In a contemporary example of this attitude, the initial public health report on the Mount Vernon choir case said that it may have been caused by people “sitting close to one another, sharing snacks and stacking chairs at the end of the practice,” even though almost 90 percent of the people there developed symptoms of Covid-19
  • So much of what we have done throughout the pandemic — the excessive hygiene theater and the failure to integrate ventilation and filters into our basic advice — has greatly hampered our response.
  • Some of it, like the way we underused or even shut down outdoor space, isn’t that different from the 19th-century Londoners who flushed the source of their foul air into the Thames and made the cholera epidemic worse.
  • Righting this ship cannot be a quiet process — updating a web page here, saying the right thing there. The proclamations that we now know are wrong were so persistent and so loud for so long.
  • the progress we’ve made might lead to an overhaul in our understanding of many other transmissible respiratory diseases that take a terrible toll around the world each year and could easily cause other pandemics.
  • So big proclamations require probably even bigger proclamations to correct, or the information void, unnecessary fears and misinformation will persist, damaging the W.H.O. now and in the future.
  • I’ve seen our paper used in India to try to reason through aerosol transmission and the necessary mitigations. I’ve heard of people in India closing their windows after hearing that the virus is airborne, likely because they were not being told how to respond
  • The W.H.O. needs to address these fears and concerns, treating it as a matter of profound change, so other public health agencies and governments, as well as ordinary people, can better adjust.
  • It needs to begin a campaign proportional to the importance of all this, announcing, “We’ve learned more, and here’s what’s changed, and here’s how we can make sure everyone understands how important this is.” That’s what credible leadership looks like. Otherwise, if a web page is updated in the forest without the requisite fanfare, how will it matter?
margogramiak

We hear what we expect to hear -- ScienceDaily - 0 views

  • Despite senses being the only window to the outside world, people do rarely question how faithfully they represent the external physical reality.
  • Despite senses being the only window to the outside world, people do rarely question how faithfully they represent the external physical reality.
    • margogramiak
       
      We've questioned our senses A LOT in TOK!
  • the cerebral cortex constantly generates predictions on what will happen next, and that neurons in charge of sensory processing only encode the difference between our predictions and the actual reality.
    • margogramiak
       
      That's really interesting. We've touched on similar concepts, but nothing exactly like this.
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  • that not only the cerebral cortex, but the entire auditory pathway, represents sounds according to prior expectations.
    • margogramiak
       
      So, multiple parts of our brain make predictions about what's going to happen next.
  • Although participants recognised the deviant faster when it was placed on positions where they expected it, the subcortical nuclei encoded the sounds only when they were placed in unexpected positions.
    • margogramiak
       
      That's interesting. How will this research affect medicine etc?
  • Predictive coding assumes that the brain is constantly generating predictions about how the physical world will look, sound, feel, and smell like in the next instant, and that neurons in charge of processing our senses save resources by representing only the differences between these predictions and the actual physical world.
    • margogramiak
       
      I remember from class that the brain looks for patterns with its senses. Does that apply here?
  • e have now shown that this process also dominates the most primitive and evolutionary conserved parts of the brain. All that we perceive might be deeply contaminated by our subjective beliefs on the physical world."
    • margogramiak
       
      Perception is crazy...
  • Developmental dyslexia, the most wide-spread learning disorder, has already been linked to altered responses in subcortical auditory pathway and to difficulties on exploiting stimulus regularities in auditory perception.
    • margogramiak
       
      That's interesting. I can see why that would affect learning.
margogramiak

Compound from medicinal herb kills brain-eating amoebae in lab studies -- ScienceDaily - 0 views

  • Primary amoebic meningoencephalitis (PAM), a deadly disease caused by the "brain-eating amoeba" Naegleria fowleri, is becoming more common in some areas of the world, and it has no effective treatment.
  • Primary amoebic meningoencephalitis (PAM), a deadly disease caused by the "brain-eating amoeba" Naegleria fowleri, is becoming more common in some areas of the world, and it has no effective treatment.
    • margogramiak
       
      Wow, that's scary.
  • Inula viscosa or "false yellowhead," kills the amoebae by causing them to commit cell suicide in lab studies, which could lead to new treatments.
    • margogramiak
       
      Nature based medicine is so interesting to me.
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  • Although the disease, which is usually contracted by swimming in contaminated freshwater, is rare, increasing cases have been reported recently in the U.S., the Philippines, southern Brazil and some Asian countries.
    • margogramiak
       
      That's terrifying. I wonder how something like that spreads effectively.
  • traditional medicine in the Mediterranean region, could effectively treat PAM.
    • margogramiak
       
      Traditional medicine is trusty!
  • Then, they isolated and tested specific compounds from the extract. The most potent compound, inuloxin A, killed amoebae in the lab by disrupting membranes and causing mitochondrial changes, chromatin condensation and oxidative damage, ultimately forcing the parasites to undergo programmed cell death, or apoptosis.
    • margogramiak
       
      We've studied concepts similar to this one in biology. Very interesting stuff!
  • Although inuloxin A was much less potent than amphotericin B in the lab, the structure of the plant-derived compound suggests that it might be better able to cross the blood-brain barrier. More studies are needed to confirm this hypothesis, the researchers say.
    • margogramiak
       
      It's pretty cool that this disease is still considered rare, and we're already figuring out how to fix it.
ilanaprincilus06

New Charges In Flint Water Crisis, Including Former Michigan Gov. Rick Snyder : NPR - 1 views

  • Former Michigan Gov. Rick Snyder was charged Wednesday for his role in the Flint water crisis
  • Snyder is facing two counts of willful neglect of duty and if convicted he could face up to a year in prison and as much as a $1,000 fine.
  • referred to them as "a politically motivated smear campaign,"
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  • Last year Nessel announced a $600 million-dollar settlement for Flint families impacted by the water crisis last year.
  • Young people were especially vulnerable, at risk of suffering long-term cognitive challenges and other health issues from being exposed to lead contamination in the water.
  • At least 12 died, more than 80 became sick
  • The "wait-and-see approach was a really bad idea,"
  • "I want to remind the people of Flint that justice delayed is not always justice denied
ilanaprincilus06

Scientists reverse memory decline using electrical pulses | Science | The Guardian - 0 views

  • focused on a part of cognition called working memory, the brain system that holds information for short periods while we are making decisions or performing calculations.
  • One factor in this decline is thought to be a disconnection between two brain networks, known as the prefrontal and temporal regions.
  • After the intervention, working memory in the older adults improved to match the younger group and the effect appeared to last for 50 minutes after the stimulation.
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  • “The findings need to be replicated under clinical trial conditions, with larger numbers of participants and with robust blinding of subjects and outcome assessors.
  • induced improvements in working memory might come at the price of worsening of other areas of cognitive function.”
  • it could also have applications in treating disorders linked to poor working memory, such as schizophrenia and Alzheimer’s disease.
huffem4

Trump's "Chinese Virus" and What's at Stake in the Coronavirus's Name | The New Yorker - 1 views

  • In another part of the study, the researchers determined that defining vaccination in terms of contamination—“the seasonal flu vaccine involves injecting people with the seasonal flu virus”—increased prejudice in subjects concerned about disease, whereas defining it in terms of protection—“the seasonal flu vaccine protects people from the seasonal flu virus”—had no such effect. Initiatives that minimize disease, the researchers concluded, might also end up minimizing discrimination.
  • It was only a matter of time before Donald Trump enlisted such language to serve his nativist agenda. Although COVID-19, the disease caused by the novel coronavirus, has killed more than twenty thousand people and affected countries around the world, Trump’s fixation on its origins in Wuhan, China, has encouraged a rash of anti-Asian bigotry in the United States.
  • This month, Trump has taken to referring to COVID-19 as the “Chinese virus,” presenting the label as a corrective to Beijing officials’ claims that the American military was the source of the outbreak.
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  • Much of the old nomenclature has turned out to be not only stigmatizing but inaccurate. The Ebola virus, for instance, gets its name from a river that sits about forty miles from Yambuku, the Congolese village where researchers first investigated the disease, in 1976.
  • Still, it’s hard not to see a similarity between the recent reports of harassment against Asian-Americans and the stigmatization that gay people suffered in the wake of the AIDS outbreak.
  • Evolutionary psychologists refer to a “behavioral immune system” that attunes humans to physical differences or unfamiliar behavior, even when it poses no risk.
  • Last week, an Asian-American journalist reported that a member of the President’s staff called COVID-19 the “kung flu” to her face.
  • This may seem like a trivial issue to some, but disease names really do matter to the people who are directly affected
  • no disease better illustrates the perils of disease naming than AIDS, which, in its early days, was sometimes called “gay cancer.”
katedriscoll

Opinion | Contaminated Memories - The New York Times - 0 views

  • But human memory is inherently flawed, and eyewitness misidentification plays a role in two-thirds of convictions overturned through DNA testing nationwide.
  • Although most of us trust our recollections, cognitive scientists like Elizabeth Loftus have shown that suggestions and post-event information can modify memories
  • Eyewitness testimony is particularly powerful precisely because the emotion fueling it is often completely genuine. The person delivering the testimony may believe in its fidelity regardless of its accuracy. But as Ms. Beerntsen’s case reminds us, it’s devastatingly easy for a witness to misidentify, so we need safeguards to ensure that those convicted are genuinely deserving.
  •  
    This article really ties into what we talked about with memory. Specifically mentioning how we learned that later events can alter your memories.
anonymous

Can you trust your earliest childhood memories? - BBC Future - 1 views

  • The moments we remember from the first years of our lives are often our most treasured because we have carried them longest. The chances are, they are also completely made up.
  • Around four out of every 10 of us have fabricated our first memory, according to researchers. This is thought to be because our brains do not develop the ability to store autobiographical memories at least until we reach two years old.
  • Yet a surprising number of us have some flicker of memory from before that age
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  • Experts have managed to turn people off all sorts of foods by convincing them it had made them ill when they were a child
  • “People have a life story, particularly as they get older and for some people it needs to stretch back to the very early stage of life,”
  • The prevailing account of how we come to believe and remember things is based around the concept of source monitoring. “Every time a thought comes to mind we have to make a decision – have we experienced it [an event], imagined it or have we talked about it with other people,” says Kimberley Wade
  • Most of the time we make that decision correctly and can identify where these mental experiences come from, but sometimes we get it wrong.
  • Wade admits she has spent a lot of time recalling an event that was actually something her brother experienced rather than herself, but despite this, it is rich in detail and provokes emotion
  • Memory researchers have shown it is possible to induce fictional autobiographical memories in volunteers, including accounts of getting lost in a shopping mall and even having tea with a member of the Royal Family
  • Based on my research, everybody is capable of forming complex false memories, given the right circumstances – Julia Shaw
  • In some situations, such as after looking at pictures or a video, children are more susceptible to forming false memories than adults. People with certain personality types are also thought to be more prone.
  • But carrying around false memories from your childhood could be having a far greater impact on you than you may realise too. The events, emotions and experiences we remember from our early years can help to shape who we are as adults, determining our likes, dislikes, fears and even our behaviour.
  • Memories before the age of three are more than likely to be false. Any that appear very fluid and detailed, as if you were playing back a home video and experiencing a chronological account of a memory, could well also be made up. It is more likely that fuzzy fragments, or snapshots of moments are real, as long as they are not from too early in your life.
  • We crave a cohesive narrative of our own existence and will even invent stories to give us a more complete picture
  • Interestingly, scientists have also found positive suggestions, such as “you loved asparagus the first time you ate it” tend to be more effective than negative suggestions like “you got sick drinking vodka”
  • “Miscarriage of justice, incarceration, loss of reputation, job and status, and family breakdown occur,
  • One of the major problems with legal cases involving false memories, is that it is currently impossible to distinguish between true and fictional recollections
  • Efforts have been made to analyse minor false memories in a brain scanner (fMRI) and detect different neurological patterns, but there is nothing as yet to indicate that this technology can be used to detect whether recollections have become distorted.
  • the most extreme case of memory implantation involves a controversial technique called “regression therapy”, where patients confront childhood traumas, supposedly buried in their subconscious
  • “Memories are malleable and tend to change slightly each time we revisit them, in the same way that spoken stories do,”
  • “Therefore at each recollection, new elements can easily be integrated while existing elements can be altered or lost.”
  • This is not to say that all evidence that relies on memory should be discarded or regarded as unreliable – they often provide the most compelling testimony in criminal cases. But it has led to rules and guidelines about how witnesses and victims should be questioned to ensure their recollections of an event or perpetrator are not contaminated by investigators or prosecutors.
  • Any memories that appear very fluid and detailed, as if you were playing back a home video, could well also be made up
  • While this may seem like a bit of fun, many scientists believe the “false memory diet” could be used to tackle obesity and encourage people to reach for healthier options like asparagus, or even help cut people’s alcohol consumption.
  • Children are more susceptible to forming false memories than adults, especially after looking at photographs or films
  • And we may not want to rid ourselves of these memories. Our memories, whether fictional or not, can help to bring us closer together.
  •  
    This is a great and very detailed article about memory and how we change our own memories and are impacted by this change.
tongoscar

Understanding the World Through Math | Asia Society - 0 views

  • The body of knowledge and practice known as mathematics is derived from the contributions of thinkers throughout the ages and across the globe. It gives us a way to understand patterns, to quantify relationships, and to predict the future. Math helps us understand the world — and we use the world to understand math.
  • The world is interconnected. Everyday math shows these connections and possibilities.
  • Algebra can explain how quickly water becomes contaminated and how many people in a third-world country drinking that water might become sickened on a yearly basis.
  • ...2 more annotations...
  • For students to function in a global context, math content needs to help them get to global competence, which is understanding different perspectives and world conditions, recognizing that issues are interconnected across the globe, as well as communicating and acting in appropriate ways.
  • In a similar vein, a study of statistics and probability is key to understanding many of the events of the world, and is usually reserved for students at a higher level of math, if it gets any study in high school at all.
sanderk

How your phone affects your health - Insider - 0 views

  • When was the last time you disinfected your phone? According to a 2017 study, high levels of bacterial contamination can be found on the surface of cell phones.
  • Time magazine suggests that your phone could be 10 times dirtier than your toilet seat.
  • Frequently looking down at your phone for extended periods of time puts a strain on your neck
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  • All of your devices emit short wavelength light, known as blue light. A Harvard study claimed that exposure to blue light before bed decreases natural melatonin production, a hormone that regulates sleep. The brightness from your phone screen can interrupt your natural circadian rhythm, and cause for shorter REM cycles and overall restless sleep.
  • With a constant influx of information grabbing your attention, it can put pressure on you to have your phone on you at all times to stay informed. Researchers agreed, telling The Chicago Tribune that the possibility of missing something if you don’t keep your phone nearby can induce a feeling of stress and anxiety. 
  • Remember the blue light? The cornea and lens can’t filter it, so the light goes to the back of the eye, which can weaken vision over time.
  • Though social media can be fun entertainment, it can also open up the door for harmful comparison. Being able to keep up to date with someone else’s success (or pitfalls) invites the opportunity for you to compare your life to theirs. That can invoke a feeling of inadequacy and unhappiness, according to Psychology Today
Javier E

Seeking Dark Matter, They Detected Another Mystery - The New York Times - 0 views

  • A team of scientists hunting dark matter has recorded suspicious pings coming from a vat of liquid xenon underneath a mountain in Italy
  • If the signal is real and persists, the scientists say, it may be evidence of a species of subatomic particles called axions — long theorized to play a crucial role in keeping nature symmetrical but never seen — streaming from the sun.
  • Instead of axions, the scientists may have detected a new, unexpected property of the slippery ghostly particles called neutrinos. Yet another equally likely explanation is that their detector has been contaminated by vanishingly tiny amounts of tritium, a rare radioactive form of hydrogen.
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  • “We want to be very clear that all we are reporting is observation of an excess (a fairly significant one) and not a discovery of any kind,”
  • “I’m trying to be calm here, but it’s hard not to be hyperbolic,” said Neal Weiner, a particle theorist at New York University. “If this is real, calling it a game changer would be an understatement.”
  • Dr. Aprile’s Xenon experiment is currently the largest and most sensitive in an alphabet soup of efforts aimed at detecting and identifying dark matter
  • The best guess is that this dark matter consists of clouds of exotic subatomic particles left over from the Big Bang and known generically as WIMPs, for weakly interacting massive particles, hundreds or thousands of times more massive than a hydrogen atom.
  • The story of axions begins in 1977, when Roberto Peccei, a professor at the University of California, Los Angeles, who died on June 1, and Helen Quinn, emerita professor at Stanford, suggested a slight modification to the theory that governs strong nuclear forces, making sure that it is invariant to the direction of time, a feature that physicists consider a necessity for the universe.
  • in its most recent analysis of that experiment, the team had looked for electrons, rather than the heavier xenon nuclei, recoiling from collisions. Among other things, that could be the signature of particles much lighter than the putative WIMPs striking the xenon.
  • Simulations and calculations suggested that random events should have produced about 232 such recoils over the course of a year.
  • But from February 2017 to February 2018, the detector recorded 285, an excess of 53 recoils.
  • Dr. Aprile and her colleagues have wired a succession of vats containing liquid xenon with photomultipliers and other sensors. The hope is that her team’s device — far underground to shield it from cosmic rays and other worldly forms of interference — would spot the rare collision between a WIMP and a xenon atom. The collision should result in a flash of light and a cloud of electrical charge.
  • this modification implied the existence of a new subatomic particle. Dr. Wilczek called it the axion, and the name stuck.
  • Axions have never been detected either directly or indirectly. And the theory does not predict their mass, which makes it hard to look for them. It only predicts that they would be weird and would barely interact with regular matter
  • although they are not WIMPS, they share some of those particles’ imagined weird abilities, such as being able to float through Earth and our bodies like smoke through a screen door.
  • In order to fulfill the requirements of cosmologists, however, such dark-matter axions would need to have a mass of less than a thousandth of an electron volt in the units of mass and energy preferred by physicists
  • (By comparison, the electrons that dance around in your smartphone weigh in at half a million electron volts each.) What they lack in heft they would more than make up for in numbers.
  • That would make individual cosmic dark-matter axions too slow and ethereal to be detected by the Xenon experiment.But axions could also be produced by nuclear reactions in the sun, and those “solar axions” would have enough energy to ping the Xenon detector right where it is most sensitive
  • The other exciting, though slightly less likely, possibility is that the Xenon collaboration’s excess signals come from the wispy particles known as neutrinos, which are real, and weird, and zipping through our bodies by the trillions every second.
  • Ordinarily, these neutrinos would not contribute much to the excess of events the detector read. But they would do so if they had an intrinsic magnetism that physicists call a magnetic moment. That would give them a higher probability of interacting with the xenon and tripping the detector
  • According to the standard lore, neutrinos, which are electrically neutral, do not carry magnetism. The discovery that they did would require rewriting the rules as they apply to neutrinos.
  • That, said Dr. Weiner, would be “a very very big deal,” because it would imply that there are new fundamental particles out there to look for — new physics.
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