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grayton downing

Newborn Immune Systems Suppressed | The Scientist Magazine® - 0 views

  • sterile world of the womb, at birth babies are thrust into an environment full of bacteria, viruses, and parasites. They are very vulnerable to these infections for their first months of life—a trait that has long been blamed on their immature immune systems.
  • “This more intricate regulation of immune responses makes more sense than immaturity,” said Sing Sing Way, who led the study, “because it allows a protective response to be mounted if needed.” This may explain why newborn immune responses, though generally weak, also vary wildly between different babies and across different studies.
  • njecting 6-day-old mice with splenocytes (a type of white blood cell) from adults. Newborn mice are normally 1,000 times more suspectible to bacterial infections than adults, but despite receiving working immune cells, they became no less vulnerable.
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  • Way added that there might be other reasons why newborns should carry immunosuppressive cells
  • Baby formulas contain small amounts of arginine. Sidney Morris, a biochemist from the University of Pittsburgh, said that it may be important to avoid fortifying them with extra arginine, lest it swamps the arginase activity of CD71+ cells, releases the immune system, and causes problems for the developing infants’ guts.
  • “Whether the precise mechanism of immunosuppression is the same or different in each of these circumstances remains to be determined,” he said.
sissij

Pregnancy Changes the Brain in Ways That May Help Mothering - The New York Times - 0 views

  • Pregnancy changes a woman’s brain, altering the size and structure of areas involved in perceiving the feelings and perspectives of others, according to a first-of-its-kind study published Monday.
  • The results were remarkable: loss of gray matter in several brain areas involved in a process called social cognition or “theory of mind,” the ability to register and consider how other people perceive things.
  • A third possibility is that the loss is “part of the brain’s program for dealing with the future,” he said. Hormone surges in pregnancy might cause “pruning or cellular adaptation that is helpful,” he said, streamlining certain brain areas to be more efficient at mothering skills “from nurturing to extra vigilance to teaching.”
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  • Pregnancy, she explained, may help a woman’s brain specialize in “a mother’s ability to recognize the needs of her infant, to recognize social threats or to promote mother-infant bonding.”
  • Researchers wanted to see if the women’s brain changes affected anything related to mothering. They found that relevant brain regions in mothers showed more activity when women looked at photos of their own babies than with photos of other children.
  • During another period of roiling hormonal change — adolescence — gray matter decreases in several brain regions that are believed to provide fine-tuning for the social, emotional and cognitive territory of being a teenager.
  • evidence against the common myth of ‘mommy brain.’
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    Our brain changes during our lifetime to better fit our need. The decrease in gray matter in brain during pregnancy enables mothers to learn mothering skills fasters and be more focused on their own child. This aligns with the logic of evolution because newborns need a lot of attention and care from their mother. I am also very surprised to see that the similar thing also happens to teenager. The decrease in gray matter gives plasticity for teenagers to absorb new knowledge. It's so amazing that our brain is actually adjusting itself in different stages of life. --Sissi (12/20/2016)
johnsonel7

Do Babies Cry in Different Languages? - NYT Parenting - 0 views

  • This was the moment Dr. Wermke, a biologist and medical anthropologist who studies babies’ first sounds, had been waiting for. She made a recording for later analysis in her lab, Würzburg University Clinic’s Center for Pre-Speech Development and Developmental Disorders. But even without the aid of computerized tools, Dr. Wermke could make out a distinctive pattern in Joris’s wail.“He really cried in German just now, right?” she said, smiling as she packed up her equipment.
  • In 2009, Dr. Wermke’s and her colleagues made headlines with a study showing that French and German newborns produce distinctly different “cry melodies,” reflecting the languages they heard in utero: German newborns produce more cries that fall from a higher to a lower pitch, mimicking the falling intonation of the German language, while French infants tend to cry with the rising intonation of French. At this age, babies experiment with a wide variety of sounds, and can learn any language. But they are already influenced by their mother tongue.
  • After they are born, young babies mimic many different sounds. But they are especially shaped by the prosody they heard in the womb, which becomes a handy guide to the strange sounds coming from the people around them. Through stress, pauses and other cues, prosody cuts up the stream of sound into words and phrases – that is, into speech.
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  • The 2-month-old with hearing problems also makes a leap. Nine days after receiving a hearing aid, his irregular, choked cries have given way to confident experiments with vowel sounds.
  • All parents, Dr. Wermke said, have an innate ability to understand and respond to their babies. Indeed, it was mothers who supported her research from the beginning, even as other scientists were skeptical. In the 1980s, when Dr. Wermke first began recording babies’ sounds, many researchers viewed crying as a mere biological alarm signal, worth investigating only in the context of problems such as colic. But mothers never doubted that their tiny babies were worth studying. As Judith Fricke, little Joris’s mother, said, “I think you’d recognize the sound of your own child among a hundred others. You develop an ear for that.”
Javier E

A 5-Step Technique for Producing Ideas circa 1939 | Brain Pickings - 0 views

  • In learning any art the important things to learn are, first, Principles, and second, Method. This is true of the art of producing ideas. Particular bits of knowledge are nothing, because they are made up [of] so called rapidly aging facts. Principles and method are everything.
  • So with the art of producing ideas. What is most valuable to know is not where to look for a particular idea, but how to train the mind in the method by which all ideas are produced and how to grasp the principles which are at the source of all ideas.
  • Every really good creative person…whom I have ever known has always had two noticeable characteristics. First, there was no subject under the sun in which he could not easily get interested — from, say, Egyptian burial customs to modern art. Every facet of life had fascination for him. Second, he was an extensive browser in all sorts of fields of information.
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  • What you do is to take the different bits of material which you have gathered and feel them all over, as it were, with the tentacles of the mind. You take one fact, turn it this way and that, look at it in different lights, and feel for the meaning of it. You bring two facts together and see how they fit. What you are seeking now is the relationship, a synthesis where everything will come together in a neat combination, like a jig-saw puzzle.
  • Then and only then, Young promises, everything will click in the fourth stage of the seemingly serendipitous a-ha! moment: Out of nowhere the Idea will appear. It will come to you when you are least expecting it
  • In his third stage of the creative process, Young stresses the importance of making absolutely “no effort of a direct nature”: It is important to realize that this is just as definite and just as necessary a stage in the process as the two preceding ones. What you have to do at this time, apparently, is to turn the problem over to your unconscious mind and let it work while you sleep.
  • [W]hen you reach this third stage in the production of an idea, drop the problem completely and turn to whatever stimulates your imagination and emotions. Listen to music, go to the theater or movies, read poetry or a detective story.
  • articulates the increasing importance of quality information filters in our modern information diet. This notion of gathering raw material is the first step in his outline of the creative process:
  • Young calls the last stage “the cold, gray dawn of the morning after,” when your newborn idea has to face reality: It requires a deal of patient working over to make most ideas fit the exact conditions, or the practical exigencies, under which they must work. And here is where many good ideas are lost. The idea man, like the inventor, is often not patient enough or practical enough to go through with this adapting part of the process. But it has to be done if you are to put ideas to work in a work-a-day world. Do not make the mistake of holding your idea close to your chest at this stage. Submit it to the criticism of the judicious. When you do, a surprising thing will happen. You will find that a good idea has, as it were, self-expanding qualities. It stimulates those who see it to add to it. Thus possibilities in it which you have overlooked will come to light.
  • what’s perhaps most interesting is the following note he made to the postscript of a reprint: From my own further experience in advertising, government, and public affairs I find no essential points which I would modify in the idea-producing process. There is one, however, on which I would put greater emphasis. This is as to the store of general materials in the idea-producer’s reservoir. […] I am convinced, however, that you gather this vicarious experience best, not when you are boning up on it for an immediate purpose, but when you are pursuing it as an end in itself.
proudsa

Hillary Clinton Sets Up A Fight With Bernie Sanders Over Paid Leave - 0 views

  • Democratic presidential candidate Hillary Clinton on Thursday offered new details about her plan to make sure all workers can take time off, with pay, in order to care for a newborn or sick relative.
  • During that time, the worker would be eligible to receive replacement wages, up to two-thirds of his or her salary.
  • The proposal, if enacted, would patch a major gap in America’s safety net. Workers in every other developed country are entitled to paid leave, in some cases for more than a year.
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  • Some companies provide paid leave anyway. In the last year, high-profile employers like Facebook and Goldman Sachs introduced or expanded paid leave for their employees.
  • But Clinton’s proposal differs from the bill in one crucial way. In order to finance the replacement wages that workers would get, the Gillibrand-DeLauro bill would impose a small payroll tax, of 0.4 percent, that employers and employees would split evenly.
  • Clinton has criticized that approach repeatedly because it would mean higher taxes on lower- and middle-income workers.
  • Sen. Marco Rubio (R-Fla.), the only Republican presidential candidate to address the issue formally, has said he’d offer small tax breaks to companies that offer paid leave -- an approach unlikely to have much impact, except perhaps to help well-off workers.
  • “The benefit of being one of the last countries in the world to adopt paid maternity leave is that we have been able to learn from other countries' experiences and the results are clear,” Betsey Stevenson, a University of Michigan economist and former adviser to President Barack Obama, told the Huffington Post on Thursday.
  • To advocates like Heather Boushey, chief economist and executive director of the Washington Center for Equitable Growth, that’s a welcome sign that American politics is finally talking about the challenges of parents who also have jobs.
Javier E

How a dose of MDMA transformed a white supremacist - BBC Future - 0 views

  • February 2020, Harriet de Wit, a professor of psychiatry and behavioural science at the University of Chicago, was running an experiment on whether the drug MDMA increased the pleasantness of social touch in healthy volunteers
  • The latest participant in the double-blind trial, a man named Brendan, had filled out a standard questionnaire at the end. Strangely, at the very bottom of the form, Brendan had written in bold letters: "This experience has helped me sort out a debilitating personal issue. Google my name. I now know what I need to do."
  • They googled Brendan's name, and up popped a disturbing revelation: until just a couple of months before, Brendan had been the leader of the US Midwest faction of Identity Evropa, a notorious white nationalist group rebranded in 2019 as the American Identity Movement. Two months earlier, activists at Chicago Antifascist Action had exposed Brendan's identity, and he had lost his job.
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  • "Go ask him what he means by 'I now know what I need to do,'" she instructed Bremmer. "If it's a matter of him picking up an automatic rifle or something, we have to intervene."
  • As he clarified to Bremmer, love is what he had just realised he had to do. "Love is the most important thing," he told the baffled research assistant. "Nothing matters without
  • When de Wit recounted this story to me nearly two years after the fact, she still could hardly believe it. "Isn't that amazing?" she said. "It's what everyone says about this damn drug, that it makes people feel love. To think that a drug could change somebody's beliefs and thoughts without any expectations – it's mind-boggling."
  • Over the past few years, I've been investigating the scientific research and medical potential of MDMA for a book called "I Feel Love: MDMA and the Quest for Connection in a Fractured World". I learnt how this once-vilified drug is now remerging as a therapeutic agent – a role it previously played in the 1970s and 1980s, prior to its criminalisation
  • He attended the notorious "Unite the Right" rally in Charlottesville and quickly rose up the ranks of his organisation, first becoming the coordinator for Illinois and then the entire Midwest. He travelled to Europe and around the US to meet other white nationalist groups, with the ultimate goal of taking the movement mainstream
  • some researchers have begun to wonder if it could be an effective tool for pushing people who are already somehow primed to reconsider their ideology toward a new way of seeing things
  • While MDMA cannot fix societal-level drivers of prejudice and disconnection, on an individual basis it can make a difference. In certain cases, the drug may even be able to help people see through the fog of discrimination and fear that divides so many of us.
  • in December 2021 I paid Brendan a visit
  • What I didn't expect was how ordinary the 31-year-old who answered the door would appear to be: blue plaid button-up shirt, neatly cropped hair, and a friendly smile.
  • Brendan grew up in an affluent Chicago suburb in an Irish Catholic family. He leaned liberal in high school but got sucked into white nationalism at the University of Illinois Urbana-Champaign, where he joined a fraternity mostly composed of conservative Republican men, began reading antisemitic conspiracy books, and fell down a rabbit hole of racist, sexist content online. Brendan was further emboldened by the populist rhetoric of Donald Trump during his presidential campaign. "His speech talking about Mexicans being rapists, the fixation on the border wall and deporting everyone, the Muslim ban – I didn't really get white nationalism until Trump started running for president," Brendan said.
  • If this comes to pass, MDMA – and other psychedelics-assisted therapy – could transform the field of mental health through widespread clinical use in the US and beyond, for addressing trauma and possibly other conditions as well, including substance use disorders, depression and eating disorders.
  • A group of anti-fascist activists published identifying information about him and more than 100 other people in Identity Evropa. He was immediately fired from his job and ostracised by his siblings and friends outside white nationalism.
  • When Brendan saw a Facebook ad in early 2020 for some sort of drug trial at the University of Chicago, he decided to apply just to have something to do and to earn a little money
  • At the time, Brendan was "still in the denial stage" following his identity becoming public, he said. He was racked with regret – not over his bigoted views, which he still held, but over the missteps that had landed him in this predicament.
  • About 30 minutes after taking the pill, he started to feel peculiar. "Wait a second – why am I doing this? Why am I thinking this way?" he began to wonder. "Why did I ever think it was okay to jeopardise relationships with just about everyone in my life?"
  • Just then, Bremmer came to collect Brendan to start the experiment. Brendan slid into an MRI, and Bremmer started tickling his forearm with a brush and asked him to rate how pleasant it felt. "I noticed it was making me happier – the experience of the touch," Brendan recalled. "I started progressively rating it higher and higher." As he relished in the pleasurable feeling, a single, powerful word popped into his mind: connection.
  • It suddenly seemed so obvious: connections with other people were all that mattered. "This is stuff you can't really put into words, but it was so profound," Brendan said. "I conceived of my relationships with other people not as distinct boundaries with distinct entities, but more as we-are-all-on
  • I realised I'd been fixated on stuff that doesn't really matter, and is just so messed up, and that I'd been totally missing the point. I hadn't been soaking up the joy that life has to offer."
  • Brendan hired a diversity, equity, and inclusion consultant to advise him, enrolled in therapy, began meditating, and started working his way through a list of educational books. S still regularly communicates with Brendan and, for his part, thinks that Brendan is serious in his efforts to change
  • "I think he is trying to better himself and work on himself, and I do think that experience with MDMA had an impact on him. It's been a touchstone for growth, and over time, I think, the reflection on that experience has had a greater impact on him than necessarily the experience itself."
  • Brendan is still struggling, though, to make the connections with others that he craves. When I visited him, he'd just spent Thanksgiving alone
  • He also has not completely abandoned his bigoted ideology, and is not sure that will ever be possible. "There are moments when I have racist or antisemitic thoughts, definitely," he said. "But now I can recognise that those kinds of thought patterns are harming me more than anyone else."
  • it's not without precedent. In the 1980s, for example, an acquaintance of early MDMA-assisted therapy practitioner Requa Greer administered the drug to a pilot who had grown up in a racist home and had inherited those views. The pilot had always accepted his bigoted way of thinking as being a normal, accurate reflection of the way things were. MDMA, however, "gave him a clear vision that unexamined racism was both wrong and mean," Greer says
  • Encouraging stories of seemingly spontaneous change appear to be exceptions to the norm, however, and from a neurological point of view, this makes sense
  • Research shows that oxytocin – one of the key hormones that MDMA triggers neurons to release – drives a "tend and defend" response across the animal kingdom. The same oxytocin that causes a mother bear to nurture her newborn, for example, also fuels her rage when she perceives a threat to her cub. In people, oxytocin likewise strengthens caregiving tendencies toward liked members of a person's in-group and strangers perceived to belong to the same group, but it increases hostility toward individuals from disliked groups
  • In a 2010 study published in Science, for example, men who inhaled oxytocin were three times more likely to donate money to members of their team in an economic game, as well as more likely to harshly punish competing players for not donating enough. (Read more: "The surprising downsides of empathy.")
  • According to research published this week in Nature by Johns Hopkins University neuroscientist Gül Dölen, MDMA and other psychedelics – including psilocybin, LSD, ketamine and ibogaine – work therapeutically by reopening a critical period in the brain. Critical periods are finite windows of impressionability that typically occur in childhood, when our brains are more malleable and primed to learn new things
  • Dölen and her colleagues' findings likewise indicate that, without the proper set and setting, MDMA and other psychedelics probably do not reopen critical periods, which means they will not have a spontaneous, revelatory effect for ridding someone of bigoted beliefs.
  • In the West, plenty of members of right-wing authoritarian political movements, including neo-Nazi groups, also have track records of taking MDMA and other psychedelics
  • This suggests, researchers write, that psychedelics are nonspecific, "politically pluripotent" amplifiers of whatever is going on in somebody's head, with no particular directional leaning "on the axes of conservatism-liberalism or authoritarianism-egalitarianism."
  • That said, a growing body of scientific evidence indicates that the human capacity for compassion, kindness, empathy, gratitude, altruism, fairness, trust, and cooperation are core features of our natures
  • As Emory University primatologist Frans de Waal wrote, "Empathy is the one weapon in the human repertoire that can rid us of the curse of xenophobia."
  • Ginsberg also envisions using the drug in workshops aimed at eliminating racism, or as a means of bringing people together from opposite sides of shared cultural histories to help heal intergenerational trauma. "I think all psychedelics have a role to play, but I think MDMA has a particularly key role because you're both expanded and present, heart-open and really able to listen in a new way," Ginsberg says. "That's something really powerful."
  • "If you give MDMA to hard-core haters on each side of an issue, I don't think it'll do a lot of good,"
  • if you start with open-minded people on both sides, then I think it can work. You can improve communications and build empathy between groups, and help people be more capable of analysing the world from a more balanced perspective rather than from fear-based, anxiety-based distrust."
  • In 2021, Ginsberg and Doblin were coauthors on a study investigating the possibility of using ayahuasca – a plant-based psychedelic – in group contexts to bridge divides between Palestinians and Israelis, with positive findings
  • "I kind of have a fantasy that maybe as we get more reacquainted with psychedelics, there could be group-based experiences that build community resiliency and are intentionally oriented toward breaking down barriers between people, having people see things from other perspectives and detribalising our society,
  • "But that's not going to happen on its own. It would have to be intentional, and – if it happens – it would probably take multiple generations."
  • Based on his experience with extremism, Brendan agreed with expert takes that no drug, on its own, will spontaneously change the minds of white supremacists or end political conflict in the US
  • he does think that, with the right framing and mindset, MDMA could be useful for people who are already at least somewhat open to reconsidering their ideologies, just as it was for him. "It helped me see things in a different way that no amount of therapy or antiracist literature ever would have done," he said. "I really think it was a breakthrough experience."
Javier E

Why it's as hard to escape an echo chamber as it is to flee a cult | Aeon Essays - 0 views

  • there are two very different phenomena at play here, each of which subvert the flow of information in very distinct ways. Let’s call them echo chambers and epistemic bubbles. Both are social structures that systematically exclude sources of information. Both exaggerate their members’ confidence in their beliefs.
  • they work in entirely different ways, and they require very different modes of intervention
  • An epistemic bubble is when you don’t hear people from the other side. An echo chamber is what happens when you don’t trust people from the other side.
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  • start with epistemic bubbles
  • That omission might be purposeful
  • But that omission can also be entirely inadvertent. Even if we’re not actively trying to avoid disagreement, our Facebook friends tend to share our views and interests
  • An ‘echo chamber’ is a social structure from which other relevant voices have been actively discredited. Where an epistemic bubble merely omits contrary views, an echo chamber brings its members to actively distrust outsiders.
  • an echo chamber is something like a cult. A cult isolates its members by actively alienating them from any outside sources. Those outside are actively labelled as malignant and untrustworthy.
  • In epistemic bubbles, other voices are not heard; in echo chambers, other voices are actively undermined.
  • The way to break an echo chamber is not to wave “the facts” in the faces of its members. It is to attack the echo chamber at its root and repair that broken trust.
  • Looking to others for corroboration is a basic method for checking whether one has reasoned well or badly
  • They have been in the limelight lately, most famously in Eli Pariser’s The Filter Bubble (2011) and Cass Sunstein’s #Republic: Divided Democracy in the Age of Social Media (2017).
  • The general gist: we get much of our news from Facebook feeds and similar sorts of social media. Our Facebook feed consists mostly of our friends and colleagues, the majority of whom share our own political and cultural views
  • various algorithms behind the scenes, such as those inside Google search, invisibly personalise our searches, making it more likely that we’ll see only what we want to see. These processes all impose filters on information.
  • Such filters aren’t necessarily bad. The world is overstuffed with information, and one can’t sort through it all by oneself: filters need to be outsourced.
  • That’s why we all depend on extended social networks to deliver us knowledge
  • any such informational network needs the right sort of broadness and variety to work
  • Each individual person in my network might be superbly reliable about her particular informational patch but, as an aggregate structure, my network lacks what Sanford Goldberg in his book Relying on Others (2010) calls ‘coverage-reliability’. It doesn’t deliver to me a sufficiently broad and representative coverage of all the relevant information.
  • Epistemic bubbles also threaten us with a second danger: excessive self-confidence.
  • An ‘epistemic bubble’ is an informational network from which relevant voices have been excluded by omission
  • Suppose that I believe that the Paleo diet is the greatest diet of all time. I assemble a Facebook group called ‘Great Health Facts!’ and fill it only with people who already believe that Paleo is the best diet. The fact that everybody in that group agrees with me about Paleo shouldn’t increase my confidence level one bit. They’re not mere copies – they actually might have reached their conclusions independently – but their agreement can be entirely explained by my method of selection.
  • Luckily, though, epistemic bubbles are easily shattered. We can pop an epistemic bubble simply by exposing its members to the information and arguments that they’ve missed.
  • echo chambers are a far more pernicious and robust phenomenon.
  • amieson and Cappella’s book is the first empirical study into how echo chambers function
  • echo chambers work by systematically alienating their members from all outside epistemic sources.
  • Their research centres on Rush Limbaugh, a wildly successful conservative firebrand in the United States, along with Fox News and related media
  • His constant attacks on the ‘mainstream media’ are attempts to discredit all other sources of knowledge. He systematically undermines the integrity of anybody who expresses any kind of contrary view.
  • outsiders are not simply mistaken – they are malicious, manipulative and actively working to destroy Limbaugh and his followers. The resulting worldview is one of deeply opposed force, an all-or-nothing war between good and evil
  • The result is a rather striking parallel to the techniques of emotional isolation typically practised in cult indoctrination
  • cult indoctrination involves new cult members being brought to distrust all non-cult members. This provides a social buffer against any attempts to extract the indoctrinated person from the cult.
  • The echo chamber doesn’t need any bad connectivity to function. Limbaugh’s followers have full access to outside sources of information
  • As Elijah Millgram argues in The Great Endarkenment (2015), modern knowledge depends on trusting long chains of experts. And no single person is in the position to check up on the reliability of every member of that chain
  • Their worldview can survive exposure to those outside voices because their belief system has prepared them for such intellectual onslaught.
  • exposure to contrary views could actually reinforce their views. Limbaugh might offer his followers a conspiracy theory: anybody who criticises him is doing it at the behest of a secret cabal of evil elites, which has already seized control of the mainstream media.
  • Perversely, exposure to outsiders with contrary views can thus increase echo-chamber members’ confidence in their insider sources, and hence their attachment to their worldview.
  • ‘evidential pre-emption’. What’s happening is a kind of intellectual judo, in which the power and enthusiasm of contrary voices are turned against those contrary voices through a carefully rigged internal structure of belief.
  • One might be tempted to think that the solution is just more intellectual autonomy. Echo chambers arise because we trust others too much, so the solution is to start thinking for ourselves.
  • that kind of radical intellectual autonomy is a pipe dream. If the philosophical study of knowledge has taught us anything in the past half-century, it is that we are irredeemably dependent on each other in almost every domain of knowledge
  • Limbaugh’s followers regularly read – but do not accept – mainstream and liberal news sources. They are isolated, not by selective exposure, but by changes in who they accept as authorities, experts and trusted sources.
  • we depend on a vastly complicated social structure of trust. We must trust each other, but, as the philosopher Annette Baier says, that trust makes us vulnerable. Echo chambers operate as a kind of social parasite on that vulnerability, taking advantage of our epistemic condition and social dependency.
  • I am quite confident that there are plenty of echo chambers on the political Left. More importantly, nothing about echo chambers restricts them to the arena of politics
  • The world of anti-vaccination is clearly an echo chamber, and it is one that crosses political lines. I’ve also encountered echo chambers on topics as broad as diet (Paleo!), exercise technique (CrossFit!), breastfeeding, some academic intellectual traditions, and many, many more
  • Here’s a basic check: does a community’s belief system actively undermine the trustworthiness of any outsiders who don’t subscribe to its central dogmas? Then it’s probably an echo chamber.
  • much of the recent analysis has lumped epistemic bubbles together with echo chambers into a single, unified phenomenon. But it is absolutely crucial to distinguish between the two.
  • Epistemic bubbles are rather ramshackle; they go up easily, and they collapse easily
  • Echo chambers are far more pernicious and far more robust. They can start to seem almost like living things. Their belief systems provide structural integrity, resilience and active responses to outside attacks
  • the two phenomena can also exist independently. And of the events we’re most worried about, it’s the echo-chamber effects that are really causing most of the trouble.
  • new data does, in fact, seem to show that people on Facebook actually do see posts from the other side, or that people often visit websites with opposite political affiliation.
  • their basis for evaluation – their background beliefs about whom to trust – are radically different. They are not irrational, but systematically misinformed about where to place their trust.
  • Many people have claimed that we have entered an era of ‘post-truth’.
  • Not only do some political figures seem to speak with a blatant disregard for the facts, but their supporters seem utterly unswayed by evidence. It seems, to some, that truth no longer matters.
  • This is an explanation in terms of total irrationality. To accept it, you must believe that a great number of people have lost all interest in evidence or investigation, and have fallen away from the ways of reason.
  • echo chambers offers a less damning and far more modest explanation. The apparent ‘post-truth’ attitude can be explained as the result of the manipulations of trust wrought by echo chambers.
  • We don’t have to attribute a complete disinterest in facts, evidence or reason to explain the post-truth attitude. We simply have to attribute to certain communities a vastly divergent set of trusted authorities.
  • An echo chamber doesn’t destroy their members’ interest in the truth; it merely manipulates whom they trust and changes whom they accept as trustworthy sources and institutions.
  • in many ways, echo-chamber members are following reasonable and rational procedures of enquiry. They’re engaging in critical reasoning. They’re questioning, they’re evaluating sources for themselves, they’re assessing different pathways to information. They are critically examining those who claim expertise and trustworthiness, using what they already know about the world
  • none of this weighs against the existence of echo chambers. We should not dismiss the threat of echo chambers based only on evidence about connectivity and exposure.
  • Notice how different what’s going on here is from, say, Orwellian doublespeak, a deliberately ambiguous, euphemism-filled language designed to hide the intent of the speaker.
  • echo chambers don’t trade in vague, ambiguous pseudo-speech. We should expect that echo chambers would deliver crisp, clear, unambiguous claims about who is trustworthy and who is not
  • clearly articulated conspiracy theories, and crisply worded accusations of an outside world rife with untrustworthiness and corruption.
  • Once an echo chamber starts to grip a person, its mechanisms will reinforce themselves.
  • In an epistemically healthy life, the variety of our informational sources will put an upper limit to how much we’re willing to trust any single person. Everybody’s fallible; a healthy informational network tends to discover people’s mistakes and point them out. This puts an upper ceiling on how much you can trust even your most beloved leader
  • nside an echo chamber, that upper ceiling disappears.
  • Being caught in an echo chamber is not always the result of laziness or bad faith. Imagine, for instance, that somebody has been raised and educated entirely inside an echo chamber
  • when the child finally comes into contact with the larger world – say, as a teenager – the echo chamber’s worldview is firmly in place. That teenager will distrust all sources outside her echo chamber, and she will have gotten there by following normal procedures for trust and learning.
  • It certainly seems like our teenager is behaving reasonably. She could be going about her intellectual life in perfectly good faith. She might be intellectually voracious, seeking out new sources, investigating them, and evaluating them using what she already knows.
  • The worry is that she’s intellectually trapped. Her earnest attempts at intellectual investigation are led astray by her upbringing and the social structure in which she is embedded.
  • Echo chambers might function like addiction, under certain accounts. It might be irrational to become addicted, but all it takes is a momentary lapse – once you’re addicted, your internal landscape is sufficiently rearranged such that it’s rational to continue with your addiction
  • Similarly, all it takes to enter an echo chamber is a momentary lapse of intellectual vigilance. Once you’re in, the echo chamber’s belief systems function as a trap, making future acts of intellectual vigilance only reinforce the echo chamber’s worldview.
  • There is at least one possible escape route, however. Notice that the logic of the echo chamber depends on the order in which we encounter the evidence. An echo chamber can bring our teenager to discredit outside beliefs precisely because she encountered the echo chamber’s claims first. Imagine a counterpart to our teenager who was raised outside of the echo chamber and exposed to a wide range of beliefs. Our free-range counterpart would, when she encounters that same echo chamber, likely see its many flaws
  • Those caught in an echo chamber are giving far too much weight to the evidence they encounter first, just because it’s first. Rationally, they should reconsider their beliefs without that arbitrary preference. But how does one enforce such informational a-historicity?
  • The escape route is a modified version of René Descartes’s infamous method.
  • Meditations on First Philosophy (1641). He had come to realise that many of the beliefs he had acquired in his early life were false. But early beliefs lead to all sorts of other beliefs, and any early falsehoods he’d accepted had surely infected the rest of his belief system.
  • The only solution, thought Descartes, was to throw all his beliefs away and start over again from scratch.
  • He could start over, trusting nothing and no one except those things that he could be entirely certain of, and stamping out those sneaky falsehoods once and for all. Let’s call this the Cartesian epistemic reboot.
  • Notice how close Descartes’s problem is to our hapless teenager’s, and how useful the solution might be. Our teenager, like Descartes, has problematic beliefs acquired in early childhood. These beliefs have infected outwards, infesting that teenager’s whole belief system. Our teenager, too, needs to throw everything away, and start over again.
  • Let’s call the modernised version of Descartes’s methodology the social-epistemic reboot.
  • when she starts from scratch, we won’t demand that she trust only what she’s absolutely certain of, nor will we demand that she go it alone
  • For the social reboot, she can proceed, after throwing everything away, in an utterly mundane way – trusting her senses, trusting others. But she must begin afresh socially – she must reconsider all possible sources of information with a presumptively equanimous eye. She must take the posture of a cognitive newborn, open and equally trusting to all outside sources
  • we’re not asking people to change their basic methods for learning about the world. They are permitted to trust, and trust freely. But after the social reboot, that trust will not be narrowly confined and deeply conditioned by the particular people they happened to be raised by.
  • Such a profound deep-cleanse of one’s whole belief system seems to be what’s actually required to escape. Look at the many stories of people leaving cults and echo chambers
  • Take, for example, the story of Derek Black in Florida – raised by a neo-Nazi father, and groomed from childhood to be a neo-Nazi leader. Black left the movement by, basically, performing a social reboot. He completely abandoned everything he’d believed in, and spent years building a new belief system from scratch. He immersed himself broadly and open-mindedly in everything he’d missed – pop culture, Arabic literature, the mainstream media, rap – all with an overall attitude of generosity and trust.
  • It was the project of years and a major act of self-reconstruction, but those extraordinary lengths might just be what’s actually required to undo the effects of an echo-chambered upbringing.
  • we need to attack the root, the systems of discredit themselves, and restore trust in some outside voices.
  • Stories of actual escapes from echo chambers often turn on particular encounters – moments when the echo-chambered individual starts to trust somebody on the outside.
  • Black’s is case in point. By high school, he was already something of a star on neo-Nazi media, with his own radio talk-show. He went on to college, openly neo-Nazi, and was shunned by almost every other student in his community college. But then Matthew Stevenson, a Jewish fellow undergraduate, started inviting Black to Stevenson’s Shabbat dinners. In Black’s telling, Stevenson was unfailingly kind, open and generous, and slowly earned Black’s trust. This was the seed, says Black, that led to a massive intellectual upheaval – a slow-dawning realisation of the depths to which he had been misled
  • Similarly, accounts of people leaving echo-chambered homophobia rarely involve them encountering some institutionally reported fact. Rather, they tend to revolve around personal encounters – a child, a family member, a close friend coming out.
  • hese encounters matter because a personal connection comes with a substantial store of trust.
  • We don’t simply trust people as educated experts in a field – we rely on their goodwill. And this is why trust, rather than mere reliability, is the key concept
  • goodwill is a general feature of a person’s character. If I demonstrate goodwill in action, then you have some reason to think that I also have goodwill in matters of thought and knowledge.
  • f one can demonstrate goodwill to an echo-chambered member – as Stevenson did with Black – then perhaps one can start to pierce that echo chamber.
  • the path I’m describing is a winding, narrow and fragile one. There is no guarantee that such trust can be established, and no clear path to its being established systematically.
  • what we’ve found here isn’t an escape route at all. It depends on the intervention of another. This path is not even one an echo-chamber member can trigger on her own; it is only a whisper-thin hope for rescue from the outside.
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