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clairemann

Opinion | How to Talk to Friends and Family Who Share Conspiracy Theories - The New Yor... - 1 views

  • Online, somebody they know and love has stumbled into the treacherous world of online conspiracy theories and, in some cases, might not even know it.
  • How do you talk to people you care about who might be on the precipice of or headed down the conspiratorial rabbit hole?
  • Conspiracy theories (like Pizzagate and now QAnon, anti-vaccine claims, disinformation around the coronavirus suggesting the virus was engineered in a laboratory) are a chronic condition that will long outlive the 2020 election.
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  • I’d non-defensively ask them, ‘Do you know how Google works?’ ‘What do you think my news feed looks like? Do you know why yours looks that way?’”
  • I would expect the following to happen.’ I
  • cognitive dissonance.
  • is to acknowledge that some conspiracies do exist — Watergate, the Catholic Church’s sexual abuse scandals, the billionaire Jeffrey Epstein’s network of underage sexual abuse.
  • And if people better understood the mechanisms and the economics, maybe then you can talk about the content.”
  • Witnesses come forward, then victims. And journalists circle like sharks to get the story. I try to get them to think about concrete things and logistical details, including the bureaucracy that’s required to maintain these vast alleged plots.”
  • “Sometimes it’s about turning the ‘do your research’ paradigm back on them,” he said. “I never appeal to authorities like the government or mainstream media, but I subtly imply that what they’re saying doesn’t match the historical record, which works better than outright dismissing them.”
  • Unfortunately, social platforms are often the worst forum for talking about these thorny issues. In many cases, a face-to-face conversation is a better place to voice your concerns.
  • They can also allow participants to pick up on subtle facial and body language expressions — or tone of voice — that may dissolve tensions.
  • “There it is. Biden’s wearing a wire.” It’s actually just a crease in his shirt. And a popular meme among teens was the claim that Wayfair is shipping children in industrial-grade cabinets.
  • The main gist of QAnon is that elite satanic pedophiles are everywhere and they’re coming to get your kids. More specifically, pedophiles are everywhere among liberals, celebrities, and the media.
  • “Q is the best thing that has ever happened to me.” There are now 87 QAnon supporters who have run for Congress, and the first will be elected this November. “I think it’s something worth listening to and paying attention to.” And Trump refuses to push back against QAnon because QAnon loves Trump.
  • One of the major reasons QAnon is on the rise right now is because when the world is scary and uncertain, we are drawn to magical thinking.
pier-paolo

Modern Science Didn't Appear Until the 17th Century. What Took So Long? - The New York ... - 0 views

  • While modern science is built on the primacy of empirical data — appealing to the objectivity of facts — actual progress requires determined partisans to move it along.
  • Why wasn’t it the ancient Babylonians putting zero-gravity observatories into orbit around the earth,” Strevens asks, “the ancient Greeks engineering flu vaccines and transplanting hearts?”
  • transforming ordinary thinking humans into modern scientists entails “a morally and intellectually violent process.”
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  • So much scientific research takes place under conditions of “intellectual confinement” — painstaking, often tedious work that requires attention to minute details, accounting for fractions of an inch and slivers of a degree.
  • This kind of obsessiveness has made modern science enormously productive, but Strevens says there is something fundamentally irrational and even “inhuman” about it.
  • He points out that focusing so narrowly, for so long, on tedious work that may not come to anything is inherently unappealing for most people. Rich and learned cultures across the world pursued all kinds of erudition and scholarly traditions, but didn’t develop this “knowledge machine”
  • The same goes for brilliant, intellectually curious individuals like Aristotle, who generated his own theory about physics but never proposed anything like the scientific method.
  • but in order to communicate with one another, in scientific journals, they have to abide by this rule. The motto of England’s Royal Society, founded in 1660, is “Nullius in verba”: “Take nobody’s word for it.”
  • purged of all nonscientific curiosity by a “program of moralizing and miseducation.” The great scientists were exceptions because they escaped the “deadening effects” of this inculcation; the rest are just “the standard product of this system”: “an empiricist all the way down.”
ilanaprincilus06

How the web distorts reality and impairs our judgement skills | Media Network | The Gua... - 0 views

  • IBM estimates that 90% of the world's online data has been created just in the past two years. What's more, it has made information more accessible than ever before.
  • However, rather than enhancing knowledge, the internet has produced an information glut or "infoxication".
  • Furthermore, since online content is often curated to fit our preferences, interests and personality, the internet can even enhance our existing biases and undermine our motivation to learn new things.
    • ilanaprincilus06
       
      When we see our preferences constantly being displayed, we are more likely to go back to wherever the information was or utilize that source, website, etc more often.
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  • these filters will isolate people in information bubbles only partly of their own choosing, and the inaccurate beliefs they form as a result may be difficult to correct."
  • the proliferation of search engines, news aggregators and feed-ranking algorithms is more likely to perpetuate ignorance than knowledge.
  • It would seem that excessive social media use may intensify not only feelings of loneliness, but also ideological isolation.
    • ilanaprincilus06
       
      Would social media networks need to stop exploiting these preferences in order for us to limit ideological isolation?
  • "What the human being is best at doing is interpreting all new information so that their prior conclusions remain intact."
  • Recent studies show that although most people consume information that matches their opinions, being exposed to conflicting views tends to reduce prejudice and enhance creative thinking.
  • the desire to prove ourselves right and maintain our current beliefs trumps any attempt to be creative or more open-minded.
  • "our objects of inquiry are not 'truth' or 'meaning' but rather configurations of consciousness. These are figures or patterns of knowledge, cognitive and practical attitudes, which emerge within a definite historical and cultural context."
  • the internet is best understood as a cultural lens through which we construct – or distort – reality.
  • we can only deal with this overwhelming range of choices by ignoring most of them.
  • trolling is so effective for enticing readers' comments, but so ineffective for changing their viewpoints.
  • Will accumulating facts help you understand the world?
    • ilanaprincilus06
       
      We must take an extra step past just reading/learning about facts and develop second order thinking about the claims/facts to truly gain a better sense of what is going on.
  • we have developed a dependency on technology, which has eclipsed our reliance on logic, critical thinking and common sense: if you can find the answer online, why bother thinking?
  • it is conceivable that individuals' capacity to evaluate and produce original knowledge will matter more than the actual acquisition of knowledge.
  • Good judgment and decision-making will be more in demand than sheer expertise or domain-specific knowledge.
margogramiak

Dutch Metro Trail Gets Caught On Whale Tail Sculpture And Avoids Disaster | HuffPost - 0 views

  • This really was a fluke.
    • margogramiak
       
      no kidding!
    • margogramiak
       
      no kidding!
  • front carriage rammed through the end of an elevated section of rails
    • margogramiak
       
      What goes wrong for that to happen?
  • as engineers tried to work out how to stabilize and then remove the train
    • margogramiak
       
      I understand why that would be difficult...
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  • The architect who designed the sculpture, Maarten Struijs, told Dutch broadcaster RTL he was pleased that it likely saved the life of the driver.
    • margogramiak
       
      Yeah, I bet the designer feels great! Not only did he create a beautiful piece of art, he also saved lives
  • plastic
    • margogramiak
       
      it's PLASTIC?
  • uninjured and there were no passengers on the train
    • margogramiak
       
      This situation is crazy, and everyone involved is so lucky for so many reasons.
  • Authorities launched an investigation into how the train could plow through the barrier at the end of the rail tracks.
    • margogramiak
       
      Oh, so they don't have answers about this. I hope whatever the problem was they get it fixed!
  • The driver of a metro train escaped injury
    • margogramiak
       
      Wow, the driver is very lucky.
  • The driver of a metro train escaped injury
  • was caught by a sculpture of a whale’s tail near the Dutch port city of Rotterdam.
    • margogramiak
       
      What are the chance of that luck?? Oh my gosh...
  • perched upon one of two tail fins known as “flukes”
    • margogramiak
       
      Must have been a strong statue!
caelengrubb

No, You're Not Left-Brained or Right-Brained | Psychology Today - 0 views

  • there’s no such thing as right-brained or left-brained.
  • The left cerebral hemisphere controls the right side of the body, and about 90 percent of people prefer to write with their right hand, indicating left brain motor dominance.
  • language skills are left lateralized, or largely controlled by the left hemisphere, in over 90 percent of people. That includes 78 percent of people who are not right-handed.
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  • The left cerebral hemisphere is to the “right-brained” poet or novelist as the hamstrings and quadriceps are to a competitive sprinter
  • Because the ability to understand and produce language is focused in the left side of the brain in almost everyone, caricaturing these creative types as using their right brain more than their left brain is silly.
  • visual-spatial abilities—localized to the right cerebral hemisphere—are skills that are absolutely critical for “left-brained” talents like science or engineering.
  • But much of our obsession with the brain’s left and right cerebral hemispheres may have started with studies of split brain patients in the ‘50s. During this time, people who suffered multiple seizures a day underwent intense surgery to treat their epilepsy.
  • To calm the electrical storms that ravaged these patients’ brains, the nerve fibers connecting the left and right hemispheres of the brain were cut. These fibers are collectively known as the corpus callosum
  • Once the corpus callosum is severed on the operating table, the new split brain patient appears astonishingly normal at first glance
  • But careful experiments reveal that this person is really two persons, two streams of consciousness in one body
  • only the left hemisphere can speak
  • The right hemisphere cannot speak, but it can point to words like “yes” or “no” to answer a question
  • Each hemisphere, it seems, maintains independent beliefs and personalities, challenging the notion that we are each an indivisible “self.”
  • We are all “brain-ambidextrous.”
Javier E

Pandemic Advice From Athletes - The New York Times - 0 views

  • There’s a special kind of exhaustion that the world’s best endurance athletes embrace. Some call it masochistic, others may call it brave. When fatigue sends legs and lungs to their limits, they are able to push through to a gear beyond their pain threshold. These athletes approach fatigue not with fear but as a challenge, an opportunity.
  • It’s a quality that allows an ultramarathoner to endure what could be an unexpected rough segment of an 100-mile race, or a sailor to push ahead when she’s in the middle of the ocean, racing through hurricane winds alone.
  • The drive to persevere is something some are born with, but it’s also a muscle everyone can learn to flex. In a way, everyone has become an endurance athlete of sorts during this pandemic, running a race with no finish line that tests the limits of their exhaustion.
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  • One message they all had: You are stronger than you think you are, and everyone is able to adapt in ways they didn’t think possible.
  • there are a few techniques to help you along — 100-mile race not required.
  • Pace Yourself
  • Training to become an elite endurance athlete means learning to embrace discomfort. Instead of hiding from pain, athletes must learn to work with it. A lot of that comes down to pacing
  • Similarly, as you muscle through an ongoing pandemic, you must look for ways to make peace with unknowns and new, uncomfortable realities. “When we think about the coronavirus, we are in it for the long run; so how do you pace yourself?”
  • She recommends thinking about your routines, practicing positive self-talk and focusing on processes instead of outcomes
  • You don’t know when the pandemic will end, but you can take control of your daily habits
  • “always have a little in reserve.”
  • Deplete your resources early and you’ll be in trouble. Focusing on day-to-day activities will pay off in the long run.
  • If you burn out all your mental energy in one day or week, you may find it more difficult to adapt when things don’t return to normal as quickly as you would hope.
  • There’s a pacing in living day to day, just as there’s pacing in climbing.
  • “Don’t play all your cards at once and keep a little something in reserve.”
  • Create Mini-Goals
  • Sports psychologists frequently recommend creating mini milestones en route to a big goal. There are many steps on the path from base camp to a mountain’s summit. Likewise, there are smaller, more achievable milestones to reach and celebrate as you venture ahead into the unknown.
  • “Setting goals that are controllable makes it easier to adapt,” Dr. Meijen said. “If you set goals that are controlled by other people, goals that aren’t realistic or are tough or boring, those are much harder to adapt to.”
  • “I’m really good at breaking things down into small increments and setting micro-goals,” he said. How micro?
  • “I break things down to 10 seconds at a time,” Mr. Woltering continued. “You just have to be present in what you are doing and you have to know that it may not be the most fun — or super painful — now, but that could change in 10 seconds down the road.”
  • And it may not change quickly. Mr. Woltering said he has spent six-hour stretches counting to 10 over and over again. “You just keep moving and keep counting,” he said. “And you have to have faith that it will change at some point.”
  • Create Structure
  • “Part of expedition life is having a routine that you’re comfortable with. When I’m on expedition, I always start the day with a basin of warm water and soap. I wash my hands, face, neck and ears and get the sand out of my eyes,” he said. “It’s something that’s repeated that gets you a sense of comfort and normalcy.”
  • During the pandemic, he has found comfort and normalcy by getting outdoors, and climbing whenever possible to “run the engine.”
  • Dee Caffari, a British sailor and the first woman to sail solo, nonstop, around the world in both directions, said structure is imperative to fight back loneliness and monotony.
  • “In your day you need structure,” Ms. Caffari said. “You need to get up in the morning knowing you’re going to make something happen.”
  • Focus on Something New
  • When all else fails, look to something new: a new hobby, a new goal, a new experience
  • During a particularly hard patch of a competition, some athletes say they focus on a different sense, one that perhaps is not at the forefront of their mind when the pain sets in. A runner could note the smells around her and a climber could note the way his hair is blowing in the wind.
  • When athletes are injured, sports psychologists and coaches frequently encourage them to find a new activity to engage their mind and body. The key is to adapt, adapt and then adapt again.
  • “We all want mental toughness, it’s an important part of dealing with difficult things,”
  • “The current definition of mental toughness is the ability to pivot and to be nimble and flexible.”
  • “The next moment is always completely uncertain, and it’s always been that way,” Dr. Gervais said. But adapting, adjusting expectations and discovering new goals or hobbies can allow you to continue to build the muscle that is mental toughness.
  • Bottom line? “Optimism is an antidote to anxiety,”
knudsenlu

Why Do We Need to Sleep? - The Atlantic - 0 views

  • In a way, it’s startling how universal sleep is: In the midst of the hurried scramble for survival, across eons of bloodshed and death and flight, uncountable millions of living things have laid themselves down for a nice, long bout of unconsciousness. This hardly seems conducive to living to fight another day.
  • such a risky habit is so common, and so persistent, suggests that whatever is happening is of the utmost importance. Whatever sleep gives to the sleeper is worth tempting death over and over again, for a lifetime.
  • “What is so important that you risk being eaten, not eating yourself, procreation ... for this?”
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  • Biologists call this need “sleep pressure”: Stay up too late, build up sleep pressure. Feeling drowsy in the evenings? Of course you are—by being awake all day, you’ve been generating sleep pressure! But like “dark matter,” this is a name for something whose nature we do not yet understand.
  • The search for the hypnotoxin was not unsuccessful. There are a handful of substances clearly demonstrated to cause sleep—including a molecule called adenosine, which appears to build up in certain parts of the brains of waking rats, then drain away during slumber. Adenosine is particularly interesting because it is adenosine receptors that caffeine seems to work on.
  • For instance, if adenosine puts us under at the moment of transition from wakefulness to sleep, where does it come from? “Nobody knows,” remarks Michael Lazarus, a researcher at the institute who studies adenosine. Some people say it’s coming from neurons, some say it’s another class of brain cells. But there isn’t a consensus. At any rate, “this isn’t about storage,” says Yanagisawa. In other words, these substances themselves don’t seem to store information about sleep pressure. They are just a response to it.
  • A few years ago, the group discovered a mouse that just could not seem to get rid of its sleep pressure. Its EEGs suggested it lived a life of snoozy exhaustion, and mice that had been engineered to carry its mutation showed the same symptoms. “This mutant has more high-amplitude sleep waves than normal. It’s always sleep-deprived,” says Yanagisawa. The mutation was in a gene called SIK3. The longer the mutants stay awake, the more chemical tags the SIK3 protein accumulates. The researchers published their discovery of the SIK3 mutants, as well as another sleep mutant, in Nature in 2016.
runlai_jiang

A New Antidote for Noisy Airports: Slower Planes - WSJ - 0 views

  • Urban airports like Boston’s Logan thought they had silenced noise issues with quieter planes. Now complaints pour in from suburbs 10 to 15 miles away because new navigation routes have created relentless noise for some homeowners. Photo: Alamy By Scott McCartney Scott McCartney The Wall Street Journal BiographyScott McCartney @MiddleSeat Scott.McCartney@wsj.com March 7, 2018 8:39 a.m. ET 146 COMMENTS saveSB107507240220
  • It turns out engines aren’t the major culprit anymore. New airplanes are much quieter. It’s the “whoosh” that big airplanes make racing through the air.
  • Computer models suggest slowing departures by 30 knots—about 35 miles an hour—would reduce noise on the ground significantly.
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  • The FAA says it’s impressed and is moving forward with recommendations Boston has made.
  • . A working group is forming to evaluate the main recommendation to slow departing jets to a speed limit of 220 knots during the climb to 10,000 feet, down from 250 knots.
  • New routes put planes over quiet communities. Complaints soared. Phoenix neighborhoods sued the FAA; Chicago neighborhoods are pushing for rotating runway use. Neighborhoods from California to Washington, D.C., are fighting the new procedures that airlines and the FAA insist are vital to future travel.
  • “It’s a concentration problem. It’s a frequency problem. It’s not really a noise problem.”
  • “The flights wake you up. We get a lot of complaints from young families with children,” says Mr. Wright, a data analyst who works from home for a major health-care company.
  • In Boston, an analysis suggested only 54% of the complaints Massport received resulted from noise louder than 45 decibels—about the level of background noise. When it’s relentless, you notice it more.
  • With a 30-knot reduction, noise directly under the flight track would decrease by between 1.5 and 5 decibels and the footprint on the ground would get a lot skinnier, sharply reducing the number of people affected, Mr. Hansman says.
  • The industry trade association Airlines for America has offered cautious support of the Boston recommendations. In a statement, the group said the changes must be safe, work with a variety of aircraft and not reduce the airport’s capacity for takeoffs and landings.
  • Air-traffic controllers will need to delay a departure a bit to put more room between a slower plane and a faster one, or modify its course slightly.
knudsenlu

How badly do you want something? Babies can tell | MIT News - 0 views

  • Babies as young as 10 months can assess how much someone values a particular goal by observing how hard they are willing to work to achieve it, according to a new study from MIT and Harvard University.
  • This ability requires integrating information about both the costs of obtaining a goal and the benefit gained by the person seeking it, suggesting that babies acquire very early an intuition about how people make decisions.
  • “This paper is not the first to suggest that idea, but its novelty is that it shows this is true in much younger babies than anyone has seen. These are preverbal babies, who themselves are not actively doing very much, yet they appear to understand other people’s actions in this sophisticated, quantitative way,”
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  • “This study is an important step in trying to understand the roots of common-sense understanding of other people’s actions. It shows quite strikingly that in some sense, the basic math that is at the heart of how economists think about rational choice is very intuitive to babies who don’t know math, don’t speak, and can barely understand a few words
  • “Abstract, interrelated concepts like cost and value — concepts at the center both of our intuitive psychology and of utility theory in philosophy and economics — may originate in an early-emerging system by which infants understand other people's actions,” she says. 
  • In other words, they apply the well-known logic that all of us rely on when we try to assess someone’s preferences: The harder she tries to achieve something, the more valuable is the expected reward to her when she succeeds.”
  • “We have to recognize that we’re very far from building AI systems that have anything like the common sense even of a 10-month-old,” Tenenbaum says. “But if we can understand in engineering terms the intuitive theories that even these young infants seem to have, that hopefully would be the basis for building machines that have more human-like intelligence.
tongoscar

IDEA Public Schools headed for Houston with high acceptance rates - and plenty of skept... - 0 views

  • Lopez’s mother and father gave up their jobs as an accountant and civil engineer, respectively, as they moved from Mexico to Texas’ Rio Grande Valley several years ago. Now, she works as an administrative assistant and he labors as a mechanic — the cost of giving their children an American education.
  • “Sacrifices like that mean so much to me that I feel the need to pay it back by getting accepted into college,” said Lopez, now a senior.
  • Now, as the organization aims to double in size over the next three years, IDEA will debut in the Houston area this August. The network plans to open two campuses in the boundaries of Houston and Spring ISDs, with each site eventually housing two schools that serve students from prekindergarten to 12th grade. By 2025, IDEA plans to establish eight more campuses that ultimately will enroll about 15,000 children living near the region’s lowest-rated traditional public schools.
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  • Lopez has reached those goals this school year, earning acceptance letters from Louisiana State University, University of Texas Rio Grande Valley and St. Mary’s University in San Antonio. He is poised to join an IDEA Public Schools senior class that, if history holds, will send nearly all graduates on to college.
  • “They market that every kid gets accepted and goes to college, and in a perfect world, that seems right,”
  • By virtually any measure, IDEA ranks among the best-scoring districts serving predominantly Hispanic and lower-income children.
  • IDEA’s results have coincided with an educational revival in the Rio Grande Valley, once considered one of the state’s lowest-performing regions. All 14 of IDEA’s neighboring districts serving at least 10,000 students earned A or B grades last year under the state’s academic accountability system. Several reported some the state’s highest math and reading test scores among poor children.
tongoscar

Twitter Mocks Donald Trump's Dismissal of New York Sea Wall: 'Make the Merfolk Pay For It' - 0 views

  • The tweet led to a flurry of responses mocking the president with references to his rhetoric about the wall at the U.S.-Mexico border."Build the sea wall and make the merfolk pay for it,"
  • Trump tweeted about the proposal on Saturday night after The New York Times reported that a six-mile-long barrier was among the options the Army Corps of Engineers is looking at to protect the region severe storms like Hurricane Sandy, which ravaged the area in 2012.
  • "We lost 44 of our neighbors in Hurricane Sandy. You should know, you lived here at the time," he tweeted. "Your climate denial isn't just dangerous to those you've sworn to protect—it's deadly."
johnsonel7

China Quietly Confirms a Third CRISPR-Edited Baby Has Been Born - 0 views

  • Given that China condemned He's research almost immediately after he announced the births of the twin babies, it's not particularly surprising to hear that the researcher is being punished for his controversial experiment.But included in Xinhua's latest report was a bit of news we thought we might never hear: a third gene-edited baby has officially been born.
  • The report doesn't include any additional information on the baby. We don't know its sex, its health status, whether the birth involved any complications - or if the baby is even still alive.But we do know this baby was born, meaning that at some point last year, there were not two, but three genetically engineered humans walking - or, more likely, crawling - the Earth
tongoscar

China's electric car market has more than 400 competitors - The Washington Post - 0 views

  • SHANGHAI — As Tesla inaugurates a $2 billion electric-car factory in China this month, a brief stroll around an upscale shopping district here shows the company already has plenty of local competition.
  • For all the success China has had conquering other industries, it never really mastered the art of manufacturing cars with internal-combustion engines. Foreign brands have dominated since the 1990s, when General Motors, Ford, Volkswagen and others began ramping up sales, turning China into the world’s largest auto buyer.
  • The Chinese government has spent at least $60 billion to support the fledgling electric-car industry, including research-and-development funding, tax exemptions and financing for battery-charging stations, according to the Center for Strategic and International Studies, a Washington think tank. That’s encouraged a whopping 400-plus Chinese companies to get into the electric-car business, CSIS said.
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  • Unreliable batteries and other quality problems have also dampened consumer enthusiasm.
  • For now foreign car companies continue to see gold in China and are boosting local production of their own electric vehicles.
  • Consumer demand remains uncertain. On a recent afternoon, several drivers at a battery-charging station in an underground parking lot were lukewarm about their Chinese-brand electric vehicles.
tongoscar

A Pattern Recognition Theory of Mind | Praxis - 0 views

  • the pace of improvement in technology would become a runaway phenomenon that would transform all aspects of human civilization.
  • the structure and functioning of the human brain is actually quite simple, a basic unit of cognition repeated millions of times. Therefore, creating an artificial brain will not require simulating the human brain at every level of detail. It will only require reverse engineering this basic repeating unit.
  • our memories are organized in discrete segments. If you try to start mid-segment, you’ll struggle for a bit until your sequential memory kicks in.
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  • your memories are sequential, like symbols on a ticker tape. They are designed to be read in a certain direction and in order.
  • your memories are nested. Every action and thought is made up of smaller actions and thoughts.
  • the cortical column, a basic structure that is repeated throughout the neocortex. Each of the approximately 500,000 cortical columns is about two millimeters high and a half millimeter wide, and contains about 60,000 neurons (for a total of about 30 billion neurons in the neocortex).
  • The human brain has evolved to recognize patterns, perhaps more than any other single function. Our brain is weak at processing logic, remembering facts, and making calculations, but pattern recognition is its deep core capability.
  • The neocortex is an elaborately folded sheath of tissue covering the whole top and front of the brain, making up nearly 80% of its weight.
  • For our purposes, the most important thing to understand about the neocortex is that it has an extremely uniform structure.
  • The basic structure and functioning of the human brain is hierarchical. This may not seem intuitive at first. It sounds like how a computer works.
  • Mountcastle also believed there must be smaller sub-units, but that couldn’t be confirmed until years later. These “mini-columns” are so tightly interwoven it is impossible to distinguish them, but they constitute the fundamental component of the neocortex. Thus, they constitute the fundamental component of human thought.
  • The basic structure of a PR has three parts: the input, the name, and the output.
  • The first part is the input – dendrites coming from other PRs that signal the presence of lower-level patterns
  • The third part is the output – axons emerging from the PR that signal the presence of its designated pattern.
  • When the inputs to a PR cross a certain threshold, it fires. That is, it emits a nerve impulse to the higher-level PRs it connects to. This is essentially the “A” PR shouting “Hey guys! I just saw the letter “A”!” When the PR for “Apple” hears such signals for a, p, p again, l, and e, it fires itself, shouting “Hey guys! I just saw “Apple!” And so on up the hierarchy.
  • “neurons that fire together, wire together,” which emphasizes the plasticity of individual neurons and is known as the Hebbian Theory, may be incorrect.
manhefnawi

Neuroscience: Overview, history, major branches - 0 views

  • Neuroscience has traditionally been classed as a subdivision of biology. These days, it is an interdisciplinary science that liaises closely with other disciplines, such as mathematics, linguistics, engineering, computer science, chemistry, philosophy, psychology, and medicine.
  • The ancient Egyptians thought the seat of intelligence was in the heart. Because of this belief, during the mummification process, they would remove the brain but leave the heart in the body.
  • Behavioral neuroscience - the study of the biological bases of behavior. Looking at how the brain affects behavior.
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  • Cognitive neuroscience - the study of higher cognitive functions that exist in humans, and their underlying neural basis. Cognitive neuroscience draws from linguistics, psychology, and cognitive science. Cognitive neuroscientists can take two broad directions: behavioral/experimental or computational/modeling, the aim being to understand the nature of cognition from a neural point of view.
anniina03

The Human Brain Evolved When Carbon Dioxide Was Lower - The Atlantic - 0 views

  • Kris Karnauskas, a professor of ocean sciences at the University of Colorado, has started walking around campus with a pocket-size carbon-dioxide detector. He’s not doing it to measure the amount of carbon pollution in the atmosphere. He’s interested in the amount of CO₂ in each room.
  • The indoor concentration of carbon dioxide concerns him—and not only for the usual reason. Karnauskas is worried that indoor CO₂ levels are getting so high that they are starting to impair human cognition.
  • Carbon dioxide, the same odorless and invisible gas that causes global warming, may be making us dumber.
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  • “This is a hidden impact of climate change … that could actually impact our ability to solve the problem itself,” he said.
  • The science is, at first glance, surprisingly fundamental. Researchers have long believed that carbon dioxide harms the brain at very high concentrations. Anyone who’s seen the film Apollo 13 (or knows the real-life story behind it) may remember a moment when the mission’s three astronauts watch a gauge monitoring their cabin start to report dangerous levels of a gas. That gauge was measuring carbon dioxide. As one of the film’s NASA engineers remarks, if CO₂ levels rise too high, “you get impaired judgement, blackouts, the beginning of brain asphyxia.”
  • The same general principle, he argues, could soon affect people here on Earth. Two centuries of rampant fossil-fuel use have already spiked the amount of CO₂ in the atmosphere from about 280 parts per million before the Industrial Revolution to about 410 parts per million today. For Earth as a whole, that pollution traps heat in the atmosphere and causes climate change. But more locally, it also sets a baseline for indoor levels of carbon dioxide: You cannot ventilate a room’s carbon-dioxide levels below the global average.
  • In fact, many rooms have a much higher CO₂ level than the atmosphere, since ventilation systems don’t work perfectly.
  • On top of that, some rooms—in places such as offices, hospitals, and schools—are filled with many breathing people, that is, many people who are themselves exhaling carbon dioxide.
  • As the amount of atmospheric CO₂ keeps rising, indoor CO₂ will climb as well.
  • in one 2016 study Danish scientists cranked up indoor carbon-dioxide levels to 3,000 parts per million—more than seven times outdoor levels today—and found that their 25 subjects suffered no cognitive impairment or health issues. Only when scientists infused that same air with other trace chemicals and organic compounds emitted by the human body did the subjects begin to struggle, reporting “headache, fatigue, sleepiness, and difficulty in thinking clearly.” The subjects also took longer to solve basic math problems. The same lab, in another study, found that indoor concentrations of pure CO₂ could get to 5,000 parts per million and still cause little difficulty, at least for college students.
  • But other research is not as optimistic. When scientists at NASA’s Johnson Space Center tested the effects of CO₂ on about two dozen “astronaut-like subjects,” they found that their advanced decision-making skills declined with CO₂ at 1,200 parts per million. But cognitive skills did not seem to worsen as CO₂ climbed past that mark, and the intensity of the effect seemed to vary from person to person.
  • There’s evidence that carbon-dioxide levels may impair only the most complex and challenging human cognitive tasks. And we still don’t know why.
  • No one has looked at the effects of indoor CO₂ on children, the elderly, or people with health problems. Likewise, studies have so far exposed people to very high carbon levels for only a few hours, leaving open the question of what days-long exposure could do.
  • Modern humans, as a species, are only about 300,000 years old, and the ambient CO₂ that we encountered for most of our evolutionary life—from the first breath of infants to the last rattle of a dying elder—was much lower than the ambient CO₂ today. I asked Gall: Has anyone looked to see if human cognition improves under lower carbon-dioxide levels? If you tested someone in a room that had only 250 parts per million of carbon dioxide—a level much closer to that of Earth’s atmosphere three centuries or three millennia ago—would their performance on tests improve? In other words, is it possible that human cognitive ability has already declined?
manhefnawi

How the Brain Deletes Old Memories | Science | AAAS - 0 views

  • Although the precise role of neurogenesis in memory is still controversial, more than a decade of research has demonstrated that boosting neurogenesis with exercise and antidepressants such as Prozac can increase rodents' ability to learn new information about places and events. A few years ago, however, neuroscientist Paul Frankland of the Hospital for Sick Children in Toronto, Canada, noticed that some of the animals in his experiment actually did worse on certain memory tasks when their neuron birth rates had been ramped up. In particular, they performed poorly on tests that required them to retain details about past events.
  • It is difficult to completely eliminate the birth of new neurons in infant mice, but by genetically engineering dividing neural stem cells to self-destruct the team was able to achieve about a 50% reduction of neurogenesis in the animals, Frankland says. With less neurogenesis, the young rodents acted more like adult mice in the experiment. They froze when first placed in the box for roughly a week, rather than just 1 day, after receiving the foot shocks.
Javier E

Opinion | Obama's memoir has stolen the show - and he has more chapters to write - The ... - 0 views

  • Obama gives readers more than a mere recitation of events. He offers an insider’s peek into his thought process
  • Obama’s well-earned reputation as someone who could overthink almost anything is one reason fellow writers, especially in the media, found him so fascinating
  • Trump’s supporters found his “honesty” refreshing, by which they meant, he’s saying what I’m thinking, no matter how ignoble my thoughts.
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  • We ink-stained wretches admired Obama’s thoughtful ways around a subject, his meandering along pathways of implication and possibility, culminating in a formulation that, often as not, would be punctuated with an ellipsis rather than a period. One could often see his mind working as he spoke.
  • When Obama speaks, he obviously chooses each word with great care. He understands his responsibility to the nation and the world by expressing himself so carefully that nothing is left to interpretation.
  • Obama’s natural elegance, contrasted to Trump’s bombastic bleats, provided a reawakening to our better angels and the higher truths that have been diminished or forgotten these past four years.
  • we’ve learned that governance isn’t only about policies; it’s also about the persona embodied by the president of the United States.
  • Obama’s early losses, of his father through abandonment and his mother from premature death, are what propelled him to the summit. I spotted both engines in him long ago because I share them.
tongoscar

Ridgecrest earthquakes show how small faults can trigger big quakes - Los Angeles Times - 0 views

  • When an earthquake strikes, the instinct of many Californians is to ask: Which fault ruptured — the Newport-Inglewood, the Hayward, the mighty San Andreas?
  • But scientists are increasingly saying it’s not that simple.
  • New research shows that the Ridgecrest earthquakes that began in July ruptured at least two dozen faults.
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  • The findings are important in helping understand how earthquakes can grow in the seconds after a fault ruptures, when two blocks of earth move away from each other.
  • The results provide even more evidence to support the idea that California faults once thought to be limited by their individual length can actually link together in a much more massive earthquake.
  • “The point is that the Landers earthquake and this earthquake are daisy-chaining up faults that previously were thought to rupture only by themselves, and that’s an important observation,”
  • The study raises the possibility that past earthquakes actually may have been bigger than previously thought.
  • In New Zealand, scientists were stunned at the bizarre map of the faults ruptured in the magnitude 7.8 Kaikoura earthquake of 2016, resembling an upside-down trident aimed at the silhouette of an eagle.
  • On a practical level, the research underscores the potential limitations of state earthquake zones designated to prevent new construction directly on top of faults,
  • Further analysis needs to be done to determine whether the 20 cross faults identified in the Ridgecrest study using computer analysis of shaking records actually broke the ground at the surface, according to Tim Dawson, a senior engineering geologist with the California Geological Survey.
  • A significant achievement of this study, Dolan said, was being able to image what faults look like deep underground, at a depth where earthquakes begin.
  • what this study proves is that the structural complexity continues deep underground where earthquakes begin, Dolan said.That’s important, Dolan said, because it may help scientists determine where future earthquakes are likely to stop, which tends to happen where faults become structurally complicated.
blythewallick

Better sleep habits lead to better college grades: Data on MIT students underscore the ... - 0 views

  • Two MIT professors have found a strong relationship between students' grades and how much sleep they're getting. What time students go to bed and the consistency of their sleep habits also make a big difference. And no, getting a good night's sleep just before a big test is not good enough -- it takes several nights in a row of good sleep to make a difference.
  • 100 students in an MIT engineering class were given Fitbits, the popular wrist-worn devices that track a person's activity 24/7, in exchange for the researchers' access to a semester's worth of their activity data
  • One of the surprises was that individuals who went to bed after some particular threshold time -- for these students, that tended to be 2 a.m., but it varied from one person to another -- tended to perform less well on their tests no matter how much total sleep they ended up getting.
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  • "What we found at the end of the day was zero correlation with fitness, which I must say was disappointing since I believed, and still believe, there is a tremendous positive impact of exercise on cognitive performance," Grossman says.
  • "When you go to bed matters," Grossman says. "If you get a certain amount of sleep -- let's say seven hours -- no matter when you get that sleep, as long as it's before certain times, say you go to bed at 10, or at 12, or at 1, your performance is the same. But if you go to bed after 2, your performance starts to go down even if you get the same seven hours. So, quantity isn't everything."
  • those who got relatively consistent amounts of sleep each night did better than those who had greater variations from one night to the next, even if they ended up with the same average amount.
  • The overall course grades for students averaging six and a half hours of sleep were down 50 percent from other students who averaged just one hour more sleep. Similarly, those who had just a half-hour more night-to-night variation in their total sleep time had grades that dropped 45 percent below others with less variation. This is huge!"
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