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runlai_jiang

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

www.wsj.com/...-for-noisy-airports-1520429994

technology airplane noise

shared by runlai_jiang on 07 Mar 18 - No Cached
  • 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.
runlai_jiang

Human Microbiome and Microbiota - 0 views

www.thoughtco.com/robiome-and-microbiota-4146796

shared by runlai_jiang on 15 Jan 18 - No Cached
  • The human microbiota consists of the entire collection of microbes that live in and on the body. In fact, there are 10 times as many microbial inhabitants of the body than there are body cells. Study of the human microbiome is inclusive of inhabitant microbes as well as the entire genomes of the body's microbial communities. These microbes reside in distinct locations in the ecosystem of the human body and perform important functions that are necessary for healthy human development.
  • Microbes of the BodyMicroscopic organisms that inhabit the body include archaea, bacteria, fungi, protists, and viruses. Microbes start to colonize the body from the moment of birth. An individual's microbiome changes in number and type throughout his or her lifetime, with the numbers of species increasing from birth to adulthood and decreasing in old age. These microbes are unique from person to person and can be impacted by certain activities, such as hand washing or taking antibiotics. Bacteria are the most numerous microbes in the human microbiome.
  • Human skin is populated by a number of different microbes that reside on the surface of the skin, as well as within glands and hair. Our skin is in constant contact with our external environment and serves as the body's first line of defense against potential pathogens. Skin microbiota help to prevent pathogenic microbes from colonizing the skin by occupying skin surfaces. They also help to educate our immune system by alerting immune cells to the presence of pathogens and initiating an immune response
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  • The human gut microbiome is diverse and dominated by trillions of bacteria with as many as one-thousand different bacterial species. These microbes thrive in the harsh conditions of the gut and are heavily involved in maintaining healthy nutrition, normal metabolism, and proper immune function. They aid in the digestion of non-digestible carbohydrates, the metabolism of bile acid and drugs, and in the synthesis of amino acids and many vitamins. A number of gut microbes also produce antimicrobial substances that protect against pathogenic bacteria.
  • Microbiota of the oral cavity number in the millions and include archaea, bacteria, fungi, protists, and viruses. These organisms exist together and most in a mutualistic relationship with the host, where both the microbes and the host benefit from the relationship. While the majority of oral microbes are beneficial, preventing harmful microbes from colonizing the mouth, some have been known to become pathogenic in response to environmental changes. Bacteria are the most numerous of the oral microbes and include Streptococcus, Actinomyces, Lactobacterium, Staphylococcus, and Propionibacterium.
runlai_jiang

8 Infinity Facts That Will Blow Your Mind - 0 views

www.thoughtco.com/at-will-blow-your-mind-4154547

shared by runlai_jiang on 15 Jan 18 - No Cached
  • Infinity has its own special symbol: ∞. The symbol, sometimes called the lemniscate, was introduced by clergyman and mathematician John Wallis in 1655. The word "lemniscate" comes from the Latin word lemniscus, which means "ribbon," while the word "infinity" comes from the Latin word infinitas, which means "boundless."
  • Of all Zeno's paradoxes, the most famous is his paradox of the Tortoise and Achilles. In the paradox, a tortoise challenges the Greek hero Achilles to a race, providing the tortoise is given a small head start. The tortoise argues he will win the race because as Achilles catches up to him, the tortoise will have gone a bit further, adding to the distance.
  • Pi as an Example of Infinity Pi is a number consisting of an infinite number of digits. Jeffrey Coolidge / Getty Images Another good example of infinity is the number π or pi. Mathematicians use a symbol for pi because it's impossible to write the number down. Pi consists of an infinite number of digits. It's often rounded to 3.14 or even 3.14159, yet no matter how many digits you write, it's impossible to get to the end.
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  • Fractals and Infinity A fractal may be magnified over and over, to infinity, always revealing more detail. PhotoviewPlus / Getty Images A fractal is an abstract mathematical object, used in art and to simulate natural phenomena. Written as a mathematical equation, most fractals are nowhere differentiable. When viewing an image of a fractal, this means you could zoom in and see new detail. In other words, a fractal is infinitely magnifiable.The Koch snowflake is an interesting example of a fractal. The snowflake starts as an equilateral triangle. For each iteration of the fractal:Each line segment is divided into three equal segments.
  • Cosmology and Infinity Even if the universe is finite, it might be one of an infinite number of "bubbles.". Detlev van Ravenswaay / Getty Images Cosmologists study the universe and ponder infinity. Does space go on and on without end? This remains an open question. Even if the physical universe as we know it has a boundary, there is still the multiverse theory to consider. Our universe may be but one in an infinite number of them.
Javier E

Wine-tasting: it's junk science | Life and style | The Observer - 0 views

www.guardian.co.uk/...-tasting-junk-science-analysis

taste sense perception research

shared by Javier E on 03 Jul 13 - No Cached
  • google_ad_client = 'ca-guardian_js'; google_ad_channel = 'lifeandstyle'; google_max_num_ads = '3'; // Comments Click here to join the discussion. We can't load the discussion on guardian.co.uk because you don't have JavaScript enabled. if (!!window.postMessage) { jQuery.getScript('http://discussion.guardian.co.uk/embed.js') } else { jQuery('#d2-root').removeClass('hd').html( '' + 'Comments' + 'Click here to join the discussion.We can\'t load the ' + 'discussion on guardian.co.uk ' + 'because your web browser does not support all the features that we ' + 'need. If you cannot upgrade your browser to a newer version, you can ' + 'access the discussion ' + 'here.' ); } Wor
  • Hodgson approached the organisers of the California State Fair wine competition, the oldest contest of its kind in North America, and proposed an experiment for their annual June tasting sessions.Each panel of four judges would be presented with their usual "flight" of samples to sniff, sip and slurp. But some wines would be presented to the panel three times, poured from the same bottle each time. The results would be compiled and analysed to see whether wine testing really is scientific.
  • Results from the first four years of the experiment, published in the Journal of Wine Economics, showed a typical judge's scores varied by plus or minus four points over the three blind tastings. A wine deemed to be a good 90 would be rated as an acceptable 86 by the same judge minutes later and then an excellent 94.
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  • Hodgson's findings have stunned the wine industry. Over the years he has shown again and again that even trained, professional palates are terrible at judging wine."The results are disturbing," says Hodgson from the Fieldbrook Winery in Humboldt County, described by its owner as a rural paradise. "Only about 10% of judges are consistent and those judges who were consistent one year were ordinary the next year."Chance has a great deal to do with the awards that wines win."
  • French academic Frédéric Brochet tested the effect of labels in 2001. He presented the same Bordeaux superior wine to 57 volunteers a week apart and in two different bottles – one for a table wine, the other for a grand cru.The tasters were fooled.When tasting a supposedly superior wine, their language was more positive – describing it as complex, balanced, long and woody. When the same wine was presented as plonk, the critics were more likely to use negatives such as weak, light and flat.
  • In 2011 Professor Richard Wiseman, a psychologist (and former professional magician) at Hertfordshire University invited 578 people to comment on a range of red and white wines, varying from £3.49 for a claret to £30 for champagne, and tasted blind.People could tell the difference between wines under £5 and those above £10 only 53% of the time for whites and only 47% of the time for reds. Overall they would have been just as a successful flipping a coin to guess.
  • why are ordinary drinkers and the experts so poor at tasting blind? Part of the answer lies in the sheer complexity of wine.For a drink made by fermenting fruit juice, wine is a remarkably sophisticated chemical cocktail. Dr Bryce Rankine, an Australian wine scientist, identified 27 distinct organic acids in wine, 23 varieties of alcohol in addition to the common ethanol, more than 80 esters and aldehydes, 16 sugars, plus a long list of assorted vitamins and minerals that wouldn't look out of place on the ingredients list of a cereal pack. There are even harmless traces of lead and arsenic that come from the soil.
  • "People underestimate how clever the olfactory system is at detecting aromas and our brain is at interpreting them," says Hutchinson."The olfactory system has the complexity in terms of its protein receptors to detect all the different aromas, but the brain response isn't always up to it. But I'm a believer that everyone has the same equipment and it comes down to learning how to interpret it." Within eight tastings, most people can learn to detect and name a reasonable range of aromas in wine
  • People struggle with assessing wine because the brain's interpretation of aroma and bouquet is based on far more than the chemicals found in the drink. Temperature plays a big part. Volatiles in wine are more active when wine is warmer. Serve a New World chardonnay too cold and you'll only taste the overpowering oak. Serve a red too warm and the heady boozy qualities will be overpowering.
  • Colour affects our perceptions too. In 2001 Frédérick Brochet of the University of Bordeaux asked 54 wine experts to test two glasses of wine – one red, one white. Using the typical language of tasters, the panel described the red as "jammy' and commented on its crushed red fruit.The critics failed to spot that both wines were from the same bottle. The only difference was that one had been coloured red with a flavourless dye
  • Other environmental factors play a role. A judge's palate is affected by what she or he had earlier, the time of day, their tiredness, their health – even the weather.
  • Robert Hodgson is determined to improve the quality of judging. He has developed a test that will determine whether a judge's assessment of a blind-tasted glass in a medal competition is better than chance. The research will be presented at a conference in Cape Town this year. But the early findings are not promising."So far I've yet to find someone who passes," he says.
runlai_jiang

What Is Synesthesia? Definition and Types - 0 views

www.thoughtco.com/a-definition-and-types-4153376

shared by runlai_jiang on 15 Jan 18 - No Cached
  • The term "synesthesia" comes from the Greek words syn, which means "together", and aisthesis, which means "sensation." Synesthesia is a perception in which stimulating one sensory or cognitive pathway  causes experiences in another sense or cognitive pathway. In other words, a sense or concept is connected to a different sense or concept, such as hearing a color or tasting a word. The connection between pathways is involuntary and consistent over time, rather than conscious or arbitrary.
  • Types of SynesthesiaThere are many different types of synesthesia, but they may be categorized as falling into one of two groups: associative synesthesia and projective synesthesia. An associate feels a connection between a stimulus and a sense, w
  • There are at least 80 known types of synesthesia, but some are more common than others: Chromesthesia: In this common form of synesthesia, sounds and colors are associated with each other. For example, the musical note "D" may correspond to seeing the color green.Grapheme-color synesthesia: This is a common form of synesthesia characterized by seeing graphemes (letter or numerals) shaded with a color. Synesthetes don't associate the same colors for a grapheme as each other, although the letter "A" does appear to be red to many individuals. Persons who experience grapheme-color synesthesia sometimes report seeing impossible colors when red and green or blue and yellow graphemes appear next to each other in a word or number. Number form: A number form is a mental shape or map of numbers resulting from seeing or thinking about numbers.Lexical-gustatory synesthesia: This a rare type of synesthesia in which hearing a word results in tasting a flavor. For example, a person's name might taste like chocolate.Mirror-touch synesthesia: While rare, mirror-touch synesthesia is noteworthy because it can be disruptive to a synesthete's life. In this form of synesthesia, an individual feels the same sensation in response to a stimulus as another person. For example, seeing a person being tapped on the shoulder would cause the synesthete to feel a tap on
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  • How Synesthesia WorksScientists have yet to make a definitive determination of the mechanism of synesthesia. It may be due to increased cross-talk between specialized regions of the brain. Another possible mechanism is that inhibition in a neural pathway is reduced in synesthetes, allowing multi-sensory processing of stimuli. Some researchers believe synesthesia is based on the way the brain extracts and assigns the meaning of a stimulus (ideasthesia).
  • Who Has Synesthesia?Julia Simner, a psychologist studying synesthesia at of the University of Edinburgh, estimates at least 4% of the population has synesthesia and that over 1% of people have grapheme-color synesthesia (colored numbers and letters). More women have synesthesia than men. Some research suggests the incidenc
  • Can You Develop Synesthesia?There are documented cases of non-synesthetes developing synesthesia. Specifically, head trauma, stroke, brain tumors, and temporal lobe epilepsy may produce synesthesia. Temporary synesthesia may result from exposure to the psychedelic drugs mescaline or LSD, from sensory deprivation, or from meditation.
Javier E

Movie Review: Inside Job - Barron's - 0 views

www.barrons.com/...111904502004575562621077193024

psychology economics great recession documentary review

shared by Javier E on 09 Mar 16 - No Cached
  • On the outsize role of the GSEs and other federal agencies in high-risk mortgages, figures compiled by former Fannie Mae Chief Credit Officer Edward Pinto show that as of mid-2008, more than 70% were accounted for by the federal government in one way or another, with nearly two-thirds of that held by Fannie and Freddie.
  • As has been documented, for example, in a forthcoming book on the GSEs called Guaranteed to Fail, there was a steady increase in affordable housing mandates imposed on these enterprises by Congress, one of several reasons why they were hardly like other capitalist enterprises, but tools and beneficiaries of government.
  • I asked Ferguson why Inside Job made such brief mention of Fannie Mae and Freddie Mac, and even then without noting that they are government-sponsored enterprises, subject to special protection by the federal government—which their creditors clearly appreciated, given the unusually low interest rates their debt commanded.
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  • Ferguson replied that their role in subprime mortgages was not very significant, and that in any case their behavior was not much different from that of other capitalist enterprises.
  • We get no inkling that Rajan's views on what made the world riskier, as set forth in his book, veer quite radically from those of Inside Job. They include, as he has written, "the political push for easy housing credit in the United States and the lax monetary policy [by the Federal Reserve] in the years 2003-2005."
  • Rajan, author of Fault Lines, a recent book on the debacle, speaks with special authority to fans of Inside Job. Not only is he in the movie—one of the talking heads speaking wisdom about what occurred—he is accurately presented as having anticipated the meltdown in a 2005 paper called "Has Financial Development Made the World Riskier?" But the things he is quoted as saying in the film are restricted to serving its themes.
  • Yet it's impossible to understand what happened without grasping the proactive role played by government. "The banking sector did not decide out of the goodness of its heart to extend mortgages to poor people," commented University of Chicago Booth School of Business Finance Professor Raghuram Rajan in a telephone interview last week. "Politicians did that, and they would have taken great umbrage if the regulator stood in the way of more housing credit."
  • THE STORY RECOUNTED in Inside Job is that principles like safety and soundness were flouted by greedy Wall Street capitalists who brought down the economy with the help of certain politicians, political appointees and corrupt academicians. Despite the attempts and desires of some, including Barney Frank, to regulate the mania, the juggernaut prevails to this day, under the presidency of Barack Obama.
  • This version of the story contains some elements of truth.
  • Text Size Regular Medium Large "A MASTERPIECE OF INVESTIGATIVE nonfiction moviemaking," wrote the film critic of the Boston Globe. "Rests its outrage on reason, research and careful argument," opined the New York Times. The "masterpiece" referred to was the recently released Inside Job, a documentary film that focuses on the causes of the 2008 financial crisis.
Javier E

How 2020 Forced Facebook and Twitter to Step In - The Atlantic - 0 views

www.theatlantic.com/...617493

facebook twitter knowledge truth social media tech misinformation

shared by Javier E on 05 Nov 23 - No Cached
  • mainstream platforms learned their lesson, accepting that they should intervene aggressively in more and more cases when users post content that might cause social harm.
  • During the wildfires in the American West in September, Facebook and Twitter took down false claims about their cause, even though the platforms had not done the same when large parts of Australia were engulfed in flames at the start of the year
  • Twitter, Facebook, and YouTube cracked down on QAnon, a sprawling, incoherent, and constantly evolving conspiracy theory, even though its borders are hard to delineate.
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  • Content moderation comes to every content platform eventually, and platforms are starting to realize this faster than ever.
  • Nothing symbolizes this shift as neatly as Facebook’s decision in October (and Twitter’s shortly after) to start banning Holocaust denial. Almost exactly a year earlier, Zuckerberg had proudly tied himself to the First Amendment in a widely publicized “stand for free expression” at Georgetown University.
  • The evolution continues. Facebook announced earlier this month that it will join platforms such as YouTube and TikTok in removing, not merely labeling or down-ranking, false claims about COVID-19 vaccines.
  • the pandemic also showed that complete neutrality is impossible. Even though it’s not clear that removing content outright is the best way to correct misperceptions, Facebook and other platforms plainly want to signal that, at least in the current crisis, they don’t want to be seen as feeding people information that might kill them.
  • When internet platforms announce new policies, assessing whether they can and will enforce them consistently has always been difficult. In essence, the companies are grading their own work. But too often what can be gleaned from the outside suggests that they’re failing.
  • It tweaked its algorithm to boost authoritative sources in the news feed and turned off recommendations to join groups based around political or social issues. Facebook is reversing some of these steps now, but it cannot make people forget this toolbox exists in the future
  • As platforms grow more comfortable with their power, they are recognizing that they have options beyond taking posts down or leaving them up. In addition to warning labels, Facebook implemented other “break glass” measures to stem misinformation as the election approached.
  • Platforms don’t deserve praise for belatedly noticing dumpster fires that they helped create and affixing unobtrusive labels to them
  • Warning labels for misinformation might make some commentators feel a little better, but whether labels actually do much to contain the spread of false information is still unknown.
  • News reporting suggests that insiders at Facebook knew they could and should do more about misinformation, but higher-ups vetoed their ideas. YouTube barely acted to stem the flood of misinformation about election results on its platform.
  • Even before the pandemic, YouTube had begun adjusting its recommendation algorithm to reduce the spread of borderline and harmful content, and is introducing pop-up nudges to encourage user
  • And if 2020 finally made clear to platforms the need for greater content moderation, it also exposed the inevitable limits of content moderation.
  • Down-ranking, labeling, or deleting content on an internet platform does not address the social or political circumstances that caused it to be posted in the first place
  • even the most powerful platform will never be able to fully compensate for the failures of other governing institutions or be able to stop the leader of the free world from constructing an alternative reality when a whole media ecosystem is ready and willing to enable him. As Renée DiResta wrote in The Atlantic last month, “reducing the supply of misinformation doesn’t eliminate the demand.”
  • Even so, this year’s events showed that nothing is innate, inevitable, or immutable about platforms as they currently exist. The possibilities for what they might become—and what role they will play in society—are limited more by imagination than any fixed technological constraint, and the companies appear more willing to experiment than ever.
lucieperloff

12 Ways People Say Their Anxiety Has Changed During 2020 | HuffPost Life - 0 views

www.huffpost.com/...020_l_5f7f3914c5b664e5baba8de3

brain science anxiety social media knowledge

shared by lucieperloff on 03 Nov 20 - No Cached
  • This year has tested our collective mental health again and again — from fears over the coronavirus to the isolating effects of social distancing, the reckoning on racial injustice, financial struggles, natural disasters and a contentious presidential election just weeks away.
  • This year has tested our collective mental health again and again — from fears over the coronavirus to the isolating effects of social distancing, the reckoning on racial injustice, financial struggles, natural disasters and a contentious presidential election just weeks away.
    • lucieperloff
      lucieperloff on 03 Nov 20
       
      So many more aspects in 2020 that have tested us than just the corona virus.
  • While many people with pre-existing anxiety report their symptoms have worsened in 2020, there’s also a subset who say they’ve been less anxious.
    • lucieperloff
      lucieperloff on 03 Nov 20
       
      Different responses from everyone to this new trauma
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  • It’s hard to break free from anxious thoughts when you’re consumed with the world falling apart with no end in sight.”
    • lucieperloff
      lucieperloff on 03 Nov 20
       
      It's hard because no one knows (or knew) what was happening.
  • my anxiety always gave me this sinking feeling that something bad was going to happen.
  • But when the isolating isn’t by choice, and it’s to avoid a deadly disease, it can be the cause of panic-inducing thoughts that you can’t escape from.
    • lucieperloff
      lucieperloff on 03 Nov 20
       
      Something that used to be a good thing created more anxiety
  • It’s as if the worry and anxiety is always at the back of my mind even when I sleep and as soon as I wake up, it overwhelms me immediately.
  • “Racial injustice doesn’t mix well with trauma, so I’ve had to do my mental illness a favor and log off of social media.
    • lucieperloff
      lucieperloff on 03 Nov 20
       
      Social media can really increase all of the anxieties people feel
  • “As someone with anxiety, I already feel an unrealistic and heavy responsibility on how my actions and words affect others.
  • At first I was filled with panic, but now I’ve adjusted to this new normal.
    • lucieperloff
      lucieperloff on 03 Nov 20
       
      The initially scary realities we were faced with have become routine
  • my anxiety started to stem from not knowing when this will end or when things can go back to feeling normal.
  • Now, I realize that the world can change in a second and that I have to learn to let certain things go. Who knows what is going to happen next.
  • “My mind immediately goes to the worst-case scenario and that’s when things start spiraling for me.
    • lucieperloff
      lucieperloff on 03 Nov 20
       
      It's hard not to when this could easily be someone else's worse-case-scenario mindset
  • Today, after a few months, the COVID anxiety isn’t as strong as it was ― when, strangely, COVID is stronger than ever in my city
Javier E

A Curious Midlife Crisis for a Tech Entrepreneur - The New York Times - 0 views

www.nytimes.com/...s-for-a-tech-entrepreneur.html

lifestyle role model entrepreneur happiness downsize

shared by Javier E on 16 Jun 15 - No Cached
  • as he approached 40, Fabrice Grinda, a French technology entrepreneur with an estimated net worth of $100 million, couldn’t shake the feeling that something was terribly wrong. Somehow the trappings of his success were weighing him down.
  • “People turn 40 and usually buy a shiny sports car,” Mr. Grinda said during an interview in a penthouse suite at Sixty LES, a downtown boutique hotel. “They don’t say, ‘I’m downsizing my life and giving up all my possessions to focus on experiences and friendships.’
  • He dubbed it “the very big downgrade”: He was going to travel the world, working on the fly while staying with friends and family. He was purposely arranging things so that he would have a chance to focus on what was meaningful in life.
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  • But that is exactly what Mr. Grinda did. He moved out of the Bedford house in December 2012, ditched the city apartment and got rid of the McLaren. He donated clothes, sports equipment and kitchen utensils to the Church of St. Francis Xavier in Lower Manhattan. He gave his furniture to Housing Works and he packed a Tumi carry-on suitcase with 50 items, including two pairs of jeans, a bathing suit and 10 pairs of socks.
  • Once he realized his days as a roving houseguest were numbered, Mr. Grinda decided to shift his approach: He kept traveling, but now he was renting apartments on Airbnb or staying in luxury hotels.
  • Born in suburban Paris in 1974, Mr. Grinda graduated from Princeton in 1996 with a degree in economics. He worked as a consultant at McKinsey & Company for two years before moving back to France to found an online auction start-up funded by the business magnate Bernard Arnault, which Mr. Grinda sold in 2000.He returned to the United States, where he co-founded Zingy, a mobile phone ringtone and game maker, which fetched $80 million in a 2004 sale. After that, he was a founder of OLX, a Craigslist-like service that has become one of the largest global classified websites.Now he is an entrepreneur and angel investor, with more than 200 investments to date, who visits start-ups in Berlin, Paris, New York, San Francisco and other cities.
  • He looks (and acts) something like Sheldon Cooper, the oddball science geek played by Jim Parsons on “The Big Bang Theory,” an observation Mr. Grinda himself has made.“Friends, who knew me in my late teens and early twenties, would tell you I had exactly the same delusional sense of self-worth and condescending and arrogant self-centered worldview,” he wrote in a blog post that noted his similarities to the sitcom character.
  • In all, Mr. Grinda said, he stayed with about 15 friends and family members in the first months of 2013. “Everyone was, like, ‘It’s a great idea. Come over,’ ” Mr. Grinda said. “The problem is, the idea of ‘Great, come over’ and me there 24 hours a day, seven days a week, is very different. Especially when their lives are not in sync with mine.”
  • “When I looked back at the things that mattered the most to me,” he said, “they were experiences, friendships and family — none of which I had invested much in, partly because I was too busy, and partly because I felt anchored by my possessions.”
  • He hatched a new plan: His friends and family members would come to him.“Rather than me going to them and disrupting their routine,” he said, “getting everyone together in a setting of vacation makes more sense.”
  • He invited his parents, his friends, their partners, children and nannies for a two-week stay in Anguilla, an island east of Puerto Rico, where he rented two conjoining houses, at a cost of $240,000, with chefs and full house service (and a total of 19 bedrooms).
  • Mr. Grinda forgot to consider that not everyone lives as he does.For one thing, he had scheduled the Anguilla vacation during the school year, which meant friends with children couldn’t make it. The island’s remoteness, furthermore, meant some guests were forced to endure a tangle of flight connections, leaving some of them exhausted by the time they arrived.And many of the people he invited, who had jobs and other obligations, could stay only for a long weekend.
  • Mr. Grinda said he has learned a lot from his very big downgrade. He reconnected with old friends, even if it meant annoying them a little, and he rekindled his relationship with his father.“We spent time talking about his life,” he said. And he is no longer against the idea of having a fixed address; he said he is now in negotiations to buy a two-bedroom apartment on the Lower East Side, which he plans to rent out when he is not in town.
  • Still, the experiment has taken its toll. “The philosophy is interesting,” he said. “But how do you put it into practice? How do you make it real?”
  • He recently split up with Otilia Aionesei, a former model who works at technology start-up, whom he had been dating, off and on, for two years. The sticking point was their lack of a shared home.“If you want to be his girlfriend, this is the life you have to lead,” Ms. Aionesei said. “I like simple things, to watch movies on the same couch.”Mr. Grinda had a different view. “We went to the Galápagos,” he said. “We went to Tulum. To St. Barts. We have these wonderful experiences and memories together.”
  • “My home is where I am,” he said. “And it doesn’t matter if it is a friend’s place or a couch or the middle of the jungle or a hotel room on the Lower East Side. But I realize that most of humanity, especially women, don’t see it that way.”
runlai_jiang

Reactivity Definition in Chemistry - 0 views

www.thoughtco.com/reactivity-definition-4147073

shared by runlai_jiang on 15 Jan 18 - No Cached
  • In chemistry, reactivity is a measure of how readily a substance undergoes a chemical reaction. The reaction can involve the substance on its own or with other atoms or compounds, generally accompanied by a release of energy. The most reactive elements and compounds may ignite spontaneously or explosively. They generally burn in water as well as the oxygen in air. Reactivity is dependent upon temperature.
  • Reactivity Trend in the Periodic TableThe organization of elements on the periodic table allows for predictions concerning reactivity. Both highly electropositive and highly electronegative elements have a strong tendency to react. These elements are located in the upper right and lower left corners of the periodic table and in certain element groups. The halogens, alkali metals, and alkaline earth metals are highly reactive.
  • How Reactivity WorksA substance reacts when the products formed from a chemical reaction have a lower energy (higher stability) than the reactants. The energy difference can be predicted using valence bond theory, atomic orbital theory, and molecular orbital theory. Basically, it boils down to the stability of electrons in their orbitals. Unpaired electrons with no electrons in comparable orbitals are the most likely to interact with orbitals from other atoms, forming chemical bonds. Unpaired electrons with degenerate orbitals that are half-filled are more stable, but still reactive. The least reactive atoms are those with a filled set of orbitals (octet).
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  • Stability Versus ReactivitySometimes a species with low reactivity is called "stable", but care should be taken to make the context clear. Stability can also refer to slow radioactive decay or to the transition of electrons from the excited state to less energetic levels (as in luminescence). A nonreactive species may be called "inert". However, most inert species actually do react under the right conditions to form complexes and compounds (e.g., higher atomic number noble gases).
Javier E

A Billionaire Mathematician's Life of Ferocious Curiosity - The New York Times - 0 views

www.nytimes.com/...fe-of-ferocious-curiosity.html

math creativity proof role model

shared by Javier E on 26 Jul 15 - No Cached
  • James H. Simons likes to play against type. He is a billionaire star of mathematics and private investment who often wins praise for his financial gifts to scientific research and programs to get children hooked on math.But in his Manhattan office, high atop a Fifth Avenue building in the Flatiron district, he’s quick to tell of his career failings.He was forgetful. He was demoted. He found out the hard way that he was terrible at programming computers. “I’d keep forgetting the notation,” Dr. Simons said. “I couldn’t write programs to save my life.”After that, he was fired.His message is clearly aimed at young people: If I can do it, so can you.
  • Down one floor from his office complex is Math for America, a foundation he set up to promote math teaching in public schools. Nearby, on Madison Square Park, is the National Museum of Mathematics, or MoMath, an educational center he helped finance. It opened in 2012 and has had a quarter million visitors.
  • Dr. Simons received his doctorate at 23; advanced code breaking for the National Security Agency at 26; led a university math department at 30; won geometry’s top prize at 37; founded Renaissance Technologies, one of the world’s most successful hedge funds, at 44; and began setting up charitable foundations at 56.
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  • With a fortune estimated at $12.5 billion, Dr. Simons now runs a tidy universe of science endeavors, financing not only math teachers but hundreds of the world’s best investigators, even as Washington has reduced its support for scientific research. His favorite topics include gene puzzles, the origins of life, the roots of autism, math and computer frontiers, basic physics and the structure of the early cosmos.
  • In time, his novel approach helped change how the investment world looks at financial markets. The man who “couldn’t write programs” hired a lot of programmers, as well as physicists, cryptographers, computational linguists, and, oh yes, mathematicians. Wall Street experience was frowned on. A flair for science was prized. The techies gathered financial data and used complex formulas to make predictions and trade in global markets.
  • Working closely with his wife, Marilyn, the president of the Simons Foundation and an economist credited with philanthropic savvy, Dr. Simons has pumped more than $1 billion into esoteric projects as well as retail offerings like the World Science Festival and a scientific lecture series at his Fifth Avenue building. Characteristically, it is open to the public.
  • On a wall in Dr. Simons’s office is one of his prides: a framed picture of equations known as Chern-Simons, after a paper he wrote with Shiing-Shen Chern, a prominent geometer. Four decades later, the equations define many esoteric aspects of modern physics, including advanced theories of how invisible fields like those of gravity interact with matter to produce everything from superstrings to black holes.
  • “He’s an individual of enormous talent and accomplishment, yet he’s completely unpretentious,” said Marc Tessier-Lavigne, a neuroscientist who is the president of Rockefeller University. “He manages to blend all these admirable qualities.”
  • Forbes magazine ranks him as the world’s 93rd richest person — ahead of Eric Schmidt of Google and Elon Musk of Tesla Motors, among others — and in 2010, he and his wife were among the first billionaires to sign the Giving Pledge, promising to devote “the great majority” of their wealth to philanthropy.
  • For all his self-deprecations, Dr. Simons does credit himself with a contemplative quality that seems to lie behind many of his accomplishments.“I wasn’t the fastest guy in the world,” Dr. Simons said of his youthful math enthusiasms. “I wouldn’t have done well in an Olympiad or a math contest. But I like to ponder. And pondering things, just sort of thinking about it and thinking about it, turns out to be a pretty good approach.”
runlai_jiang

Impossible Colors and How to See Them - 0 views

www.thoughtco.com/le-colors-introduction-4152091

shared by runlai_jiang on 15 Jan 18 - No Cached
  • Impossible Colors and How to See Them
  • How Impossible Colors Work Basically, the human eye has three types of cone cells that register color that work in an antagonistic fashion:Blue versus yellowRed versus greenLight versus darkThere is overlap between the wavelengths of light covered by the cone cells, so you see more than just blue, yellow, red, and green. White, for example, is not a wavelength of light, yet the human eye perceives it as a mixture of different spectral colors. Because of the opponent process, you can't see both blue and yellow at the same time, nor red and green. These combinations are so-called impossible colors.
  • Chimerical Colors Hyperbolic colors may be seen by staring at a color and then viewing the afterimage on the complementary color opposite it on the color wheel. Dave King / Getty Images
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  • While you can't ordinarily see both red and green or both blue and yellow, visual scientist Hewitt Crane and his colleague Thomas Piantanida published a paper in Science claiming such perception was possible. In their 1983 paper "On Seeing Reddish Green and Yellowish Blue" they claimed volunteers viewing adjacent red and green stripes could see reddish green, while viewers of adjacent yellow and blue stripes could see yellowish blue. The researchers used an eye tracker to hold the
  • The impossible colors reddish green and yellowish blue are imaginary colors that do not occur in the light spectrum. Another type of imaginary color is a chimerical color. A chimerical color is seen by looking at a color until the cone cells are fatigued and then looking at a different color. This produces an afterimage perceived by the brain, not the eyes.Examples of chimerical colors include:Self-luminous colors: Self-luminous colors appear to glow even though no light is emitted. An
  • Stygian colors: Stygian colors are dark and supersaturated. For example, "stygian blue" may be seen by staring at bright yellow and then looking at black. The normal afterimage is dark blue. When viewed against black, the resulting blue is as dark as black, yet colored. Stygian colors appear on black because certain neurons only fire signals in the dark.Hyperbolic colors:
  • Impossible colors like reddish green or yellowish blue are trickier to see. To try to see these colors, put a yellow object and blue object right next to each other and cross your eyes so that the two objects overlap. The same procedure works for green and red. The overlapping region may appear to be a mix of the two colors (i.e., green for blue and yellow, brown for red and green), a field of dots of the component colors, or an unfamiliar color that is both red/green or yellow/blue at once!
kushnerha

The Rise of Hate Search - The New York Times - 0 views

www.nytimes.com/...the-rise-of-hate-search.html

new york times islamophobia terrorism language

shared by kushnerha on 13 Dec 15 - No Cached
  • after the media first reported that at least one of the shooters had a Muslim-sounding name, a disturbing number of Californians had decided what they wanted to do with Muslims: kill them.
  • the rest of America searched for the phrase “kill Muslims” with about the same frequency that they searched for “martini recipe,” “migraine symptoms” and “Cowboys roster.”
  • People often have vicious thoughts. Sometimes they share them on Google. Do these thoughts matter?Yes. Using weekly data from 2004 to 2013, we found a direct correlation between anti-Muslim searches and anti-Muslim hate crimes.
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  • In 2014, according to the F.B.I., anti-Muslim hate crimes represented 16.3 percent of the total of 1,092 reported offenses. Anti-Semitism still led the way as a motive for hate crimes, at 58.2 percent.
  • Hate crimes may seem chaotic and unpredictable, a consequence of random neurons that happen to fire in the brains of a few angry young men. But we can explain some of the rise and fall of anti-Muslim hate crimes just based on what people are Googling about Muslims.
  • If our model is right, Islamophobia and thus anti-Muslim hate crimes are currently higher than at any time since the immediate aftermath of the Sept. 11 attacks.
  • How can these Google searches track Islamophobia so well? Who searches for “I hate Muslims” anyway?We often think of Google as a source from which we seek information directly, on topics like the weather, who won last night’s game or how to make apple pie. But sometimes we type our uncensored thoughts into Google, without much hope that Google will be able to help us. The search window can serve as a kind of confessional.
  • It is not just that hatred against Muslims is extremely high today. It’s that it’s exceptional compared with prejudice against every other group in the United States.
  • “If someone is willing to say ‘I hate them’ or ‘they disgust me,’ we know that those emotions are as good a predictor of behavior as actual intent,” said Susan Fiske, a social psychologist at Princeton
  • Google searches seem to suffer from selection bias: Instead of asking a random sample of Americans how they feel, you just get information from those who are motivated to search. But this restriction may actually help search data predict hate crimes.
  • “Google searches answer a different question: What do people excited enough by an issue to comment on it think and believe about it? The answer to this question, just because it is unrepresentative of the public as a whole, may be a better bet to predict hate crimes.”
  • While the vast majority of Muslim Americans won’t be victims of hate crimes, few escape the “constant sense of fear and paranoia” that they or their loved ones might be next, said Rana Ibrahem
  • What about the other side of the coin — compassion and understanding? Do they stand a chance against hate?Searches for information about Islam and Muslims did rise after the attacks in Paris and San Bernardino. Yet they rose far less than searches for hate did. “Who is Muhammad?” “what do Muslims believe?” and “what does the Quran say?” for instance, were no match for intolerance.
  • Google searches expressing moods, rather than looking for information, represent a tiny sample of everyone who is actually thinking those thoughts.
  • The search data also tells us that changes in Americans’ policy concerns have been dramatic. They happened, quite literally, within minutes of the terror attacks.Before the Paris attacks, 60 percent of Americans’ searches that took an obvious view of Syrian refugees saw them positively, asking how they could “help,” “volunteer” or “aid.” The other 40 percent were negative and mostly expressed skepticism about security. After Paris, however, the share of people opposed to refugees rose to 80 percent.
  • One idea might be to increase cultural integration. This is based on the “contact hypothesis”: If more Americans have Muslim neighbors, they will learn not to harbor irrational hate. We did not find support for this in the data — in fact, we found evidence for the opposite.
  • That’s evidence for the dominance of the “racial threat” hypothesis, which predicts that proximity breeds tension, not trust.
  • Another solution might be for leaders to talk about the importance of tolerance and the irrationality of hatred, as President Obama did in his Oval Office speech last Sunday night. He asked Americans to reject discrimination and religious tests for immigration. The reactions to his speech offer an excellent opportunity to see what works and what doesn’t work.
  • There was one line, however, that did trigger the type of response Mr. Obama might have wanted. He said, “Muslim Americans are our friends and our neighbors, our co-workers, our sports heroes and yes, they are our men and women in uniform, who are willing to die in defense of our country.”After this line, for the first time in more than a year, the top Googled noun after “Muslim” was not “terrorists,” “extremists” or “refugees.” It was “athletes,” followed by “soldiers.” And, in fact, “athletes” kept the top spot for a full day afterward.
  • On the whole, though, the response to the president’s speech shows that appealing to the better angels of an angry mob will most likely just backfire.
clairemann

Is It Bad To Get Too Much Sleep? | HuffPost Life - 0 views

www.huffpost.com/...eep_l_6042b664c5b613cec15da45f

psychology science research knowledge brain science

shared by clairemann on 27 Mar 21 - No Cached
  • For years, we’ve been told how detrimental a lack of sleep can be for our mental and physical health.
  • But is it bad to get too much sleep — and if so, how much is too much?
  • “It’s important to remember that not everyone’s ‘too much sleep’ is the same,” sleep psychologist Jade Wu, a researcher at the Duke University School of Medicine, told HuffPost. “And sleep needs change over the lifetime. For example, a teenager or young adult may very well need nine or more hours per night, whereas a retiree likely doesn’t.”
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  • Oversleeping — typically defined as more than nine or 10 hours in research studies — is associated with certain health risks, including stroke, obesity, depression, diabetes, heart disease and dementia. However, it’s not clear if oversleeping causes these conditions or if it’s just an indicator that something else is wrong.
  • “In other words, we don’t know if it’s the long sleep that’s causing problems over time, or if some underlying health problem is causing someone to sleep longer,”
  • “If someone seems to be an unusually long sleeper, it’s possible that they are simply wired to need more sleep,” Wu said. (That said, it can’t hurt to mention it to your doctor if you have some concerns.)
  • “A number of factors, such as medical conditions, medication side effects, and undiagnosed sleep disorders, can lead to poor sleep quality and non-restful sleep,” she added.
  • if sleep quantity isn’t the issue, then sleep quality probably is. Conditions like sleep apnea can disrupt sleep and leave you feeling fatigued even after spending ample time in bed.
  • “Poor quality sleep means that an individual does not get to the deeper stages of sleep or REM sleep, which restore the brain and body and makes you feel refreshed and rejuvenated the next day,”
  • “Get lots of sunlight, get physically active — or at least decrease long stretches of sitting — and go out of your way to plan some fun and social activities,” Wu said. “Make efforts to prioritize physical and mental health. You may find yourself waking up with more energy after making these changes.”
cvanderloo

Democrats Call For Fast-Tracking Citizenship For Undocumented Essential Workers | HuffPost - 0 views

www.huffpost.com/...hip_n_6002173fc5b6ffcab964638e

immigration undocumented citizenship democrats republicans opinions

shared by cvanderloo on 16 Jan 21 - No Cached
  • Rep. Joaquin Castro (D-Texas) and Sen.-designate Alex Padilla (D-Calif.) are pushing for undocumented essential workers on the front lines of the coronavirus pandemic to be fast-tracked for U.S. citizenship. 
  • Padilla’s own parents came to the U.S. from Mexico in the 1960s and worked in restaurants and house cleaning.  
    • cvanderloo
      cvanderloo on 16 Jan 21
       
      Shows how your experiences shape your opinions.
  • “These are people who feed us, clean our homes and hospitals and offices… and they do all this while living in fear of deportation, exploitation and now of this pandemic,”
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  • many who work in meatpacking, farm work and other front-line industries don’t have the option to work from home, and their employers don’t provide them with paid sick leave. 
  • Biden and Harris’ platform includes a commitment to work with Congress to pass legislation to create a path to citizenship for all undocumented immigrants in the U.S.  
  • As the coronavirus surges, Latinx and Black people are around four times as likely to be hospitalized as white people, and nearly three times as likely to die,
  • Last month, France fast-tracked citizenship processes for hundreds of immigrant front-line workers, including health care workers, garbage collectors, housekeepers and cashiers. 
    • cvanderloo
      cvanderloo on 16 Jan 21
       
      Example of other countries do the same thing
  • Undocumented immigrants are among those hardest hit by the pandemic since they are disproportionately represented among workers deemed “essential” — from farmworkers to building cleaners — who are risking their lives while millions of Americans stay home.
  • Patrice Lawrence, co-director of the immigrant group UndocuBlack Network, said legislation recognizing immigrants’ “humanity and our contributions to this country is long overdue” and that a bill protecting undocumented essential workers is “the bare minimum this country can do.”
runlai_jiang

An Introduction to Dog Intelligence and Emotion - 0 views

www.thoughtco.com/dog-intelligence-4157526

psychology science

shared by runlai_jiang on 15 Jan 18 - No Cached
  • The Science of Animal CognitionOver the past several years, one of the biggest advances in our human understanding of doggie cognition has been the use of MRI machines to scan dog brains. MRI stands for magnetic resonance imaging, the process of taking an ongoing picture of what parts of the brain are lighting up through what external stimuli.Dogs, as any doggie parent knows, are highly trainable. This trainable nature makes dogs great candidates for MRI machines, unlike non-domesticated wild animals like birds or bears.
  • Do you imagine they feel something like human jealousy? Well, there’s science to back this up, too.
  • As Smart as ChildrenAnimal psychologists have clocked dog intelligence at right around that of a two to two-and-a-half year old human child. The 2009 study which examined this found that dogs can understand up to 250 words and gestures. Even more surprising, the same study found that dogs can actually count low numbers (up to five) and even do simple math.
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  • Through ongoing research, McGowan has found out a lot about animal cognition and feelings. In a study done in 2015, McGowan found that a human’s presence leads to increased blood flow to a dog’s eyes, ears and paws, which means the dog is excited.
  • Dogs have been studied for their empathy, as well. A 2012 study examined dogs’ behavior towards distressed humans that weren’t their owners. While the study concluded that dogs display an empathy-like behavior, the scientists writing the re
  • Numerous other studies on dog behavior, emotion, and intelligence have found that dogs “eavesdrop” on human interactions to assess who is mean to their owner and who isn’t and that dogs follow their human’s gaze.These studies may just be the tip of the iceberg when it comes to our learning about dogs. And as for doggie parents? Well, they may know a lot more than the rest of us, just by observing their best canine companions every day.
Javier E

Love People, Not Pleasure - NYTimes.com - 0 views

www.nytimes.com/...-love-people-not-pleasure.html

happiness pleasure love materialism fame sex wealth psychology

shared by Javier E on 22 Jul 14 - No Cached
  • Fame, riches and pleasure beyond imagination. Sound great? He went on to write:“I have diligently numbered the days of pure and genuine happiness which have fallen to my lot: They amount to 14.”Abd al-Rahman’s problem wasn’t happiness, as he believed — it was unhappiness
  • Happiness and unhappiness are certainly related, but they are not actually opposites.
  • Circumstances are certainly important. No doubt Abd al-Rahman could point to a few in his life. But paradoxically, a better explanation for his unhappiness may have been his own search for well-being. And the same might go for you.Continue reading the main story
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  • As strange as it seems, being happier than average does not mean that one can’t also be unhappier than average.
  • This might seem totally counterintuitive. After all, we are unambiguously driven to accumulate material goods, to seek fame, to look for pleasure. How can it be that these very things can give us unhappiness instead of happiness? There are two explanations, one biological and the other philosophical.
  • the paradox of fame. Just like drugs and alcohol, once you become addicted, you can’t live without it. But you can’t live with it, either.
  • That impulse to fame by everyday people has generated some astonishing innovations.
  • Today, each of us can build a personal little fan base, thanks to Facebook, YouTube, Twitter and the like. We can broadcast the details of our lives to friends and strangers in an astonishingly efficient way. That’s good for staying in touch with friends, but it also puts a minor form of fame-seeking within each person’s reach. And several studies show that it can make us unhappy.
  • It makes sense. What do you post to Facebook? Pictures of yourself yelling at your kids, or having a hard time at work? No, you post smiling photos of a hiking trip with friends. You build a fake life — or at least an incomplete one — and share it. Furthermore, you consume almost exclusively the fake lives of your social media “friends.” Unless you are extraordinarily self-aware, how could it not make you feel worse to spend part of your time pretending to be happier than you are, and the other part of your time seeing how much happier others seem to be than you?Continue reading the main story
  • the bulk of the studies point toward the same important conclusion: People who rate materialistic goals like wealth as top personal priorities are significantly likelier to be more anxious, more depressed and more frequent drug users, and even to have more physical ailments than those who set their sights on more intrinsic values.
  • as the Dalai Lama pithily suggests, it is better to want what you have than to have what you want.
  • In 2004, two economists looked into whether more sexual variety led to greater well-being. They looked at data from about 16,000 adult Americans who were asked confidentially how many sex partners they had had in the preceding year, and about their happiness. Across men and women alike, the data show that the optimal number of partners is one.
  • In 2009, researchers from the University of Rochester conducted a study tracking the success of 147 recent graduates in reaching their stated goals after graduation. Some had “intrinsic” goals, such as deep, enduring relationships. Others had “extrinsic” goals, such as achieving reputation or fame. The scholars found that intrinsic goals were associated with happier lives. But the people who pursued extrinsic goals experienced more negative emotions, such as shame and fear. They even suffered more physical maladies.
  • From an evolutionary perspective, it makes sense that we are wired to seek fame, wealth and sexual variety. These things make us more likely to pass on our DNA.
  • here’s where the evolutionary cables have crossed: We assume that things we are attracted to will relieve our suffering and raise our happiness.
  • that is Mother Nature’s cruel hoax. She doesn’t really care either way whether you are unhappy — she just wants you to want to pass on your genetic material. If you conflate intergenerational survival with well-being, that’s your problem, not nature’s.
  • More philosophically, the problem stems from dissatisfaction — the sense that nothing has full flavor, and we want more. We can’t quite pin down what it is that we seek. Without a great deal of reflection and spiritual hard work, the likely candidates seem to be material things, physical pleasures or favor among friends and strangers.
  • We look for these things to fill an inner emptiness. They may bring a brief satisfaction, but it never lasts, and it is never enough. And so we crave more.
  • This search for fame, the lust for material things and the objectification of others — that is, the cycle of grasping and craving — follows a formula that is elegant, simple and deadly:Love things, use people.
  • This was Abd al-Rahman’s formula as he sleepwalked through life. It is the worldly snake oil peddled by the culture makers from Hollywood to Madison Avenue.
  • Simply invert the deadly formula and render it virtuous:Love people, use things.
  • It requires the courage to repudiate pride and the strength to love others — family, friends, colleagues, acquaintances, God and even strangers and enemies. Only deny love to things that actually are objects. The practice that achieves this is charity. Few things are as liberating as giving away to others that which we hold dear.
  • This also requires a condemnation of materialism.
  • Finally, it requires a deep skepticism of our own basic desires. Of course you are driven to seek admiration, splendor and physical license.
  • Declaring war on these destructive impulses is not about asceticism or Puritanism. It is about being a prudent person who seeks to avoid unnecessary suffering.
huffem4

How to Use Critical Thinking to Separate Fact From Fiction Online | by Simon Spichak | ... - 2 views

medium.com/...om-fiction-online-b13ee6bb2a14

shared by huffem4 on 01 Nov 20 - No Cached
  • Critical thinking helps us frame everyday problems, teaches us to ask the correct questions, and points us towards intelligent solutions.
  • Critical thinking is a continuing practice that involves an open mind and methods for synthesizing and evaluating the quality of knowledge and evidence, as well as an understanding of human errors.
  • Step 1. What We Believe Depends on How We Feel
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  • One of the first things I ask myself when I read a headline or find a claim about a product is if the phrase is emotionally neutral. Some headlines generate outrage or fear, indicating that there is a clear bias. When we read something that exploits are emotions, we must be careful.
  • misinformation tends to play on our emotions a lot better than factual reporting or news.
  • When I’m trying to figure out whether a claim is factual, there are a few questions I always ask myself.Does the headline, article, or information evoke fear, anger, or other strong negative emotions?Where did you hear about the information? Does it cite any direct evidence?What is the expert consensus on this information?
  • Step 2. Evidence Synthesis and EvaluationSometimes I’m still feeling uncertain if there’s any truth to a claim. Even after taking into account the emotions it evokes, I need to find the evidence of a claim and evaluate its quality
  • Often, the information that I want to check is either political or scientific. There are different questions I ask myself, depending on the nature of these claims.
  • Political claims
  • Looking at multiple different outlets, each with its own unique biases, helps us get a picture of the issue.
  • I use multiple websites specializing in fact-checking. They provide primary sources of evidence for different types of claims. Here is a list of websites where I do my fact-checking:
  • SnopesPolitifactFactCheckMedia Bias/Fact Check (a bias assessor for fact-checking websites)Simply type in some keywords from the claim to find out if it’s verified with primary sources, misleading, false, or unproven.
  • Science claims
  • Often we tout science as the process by which we uncover absolute truths about the universe. Once many scientists agree on something, it gets disseminated in the news. Confusion arises once this science changes or evolves, as is what happened throughout the coronavirus pandemic. In addition to fear and misinformation, we have to address a fundamental misunderstanding of the way science works when practicing critical thinking.
  • It is confusing to hear about certain drugs found to cure the coronavirus one moment, followed by many other scientists and researchers saying that they don’t. How do we collect and assess these scientific claims when there are discrepancies?
  • A big part of these scientific findings is difficult to access for the public
  • Sometimes the distinction between scientific coverage and scientific articles isn’t clear. When this difference is clear, we might still find findings in different academic journals that disagree with each other. Sometimes, research that isn’t peer-reviewed receives plenty of coverage in the media
  • Correlation and causation: Sometimes a claim might present two factors that appear correlated. Consider recent misinformation about 5G Towers and the spread of coronavirus. While there might appear to be associations, it doesn’t necessarily mean that there is a causative relationship
  • When you’re still unsure, follow the consensus of the experts within the field. Scientists pointed out flaws within this pre-print article leading to its retraction. The pre-print was removed from the server because it did not hold up to proper scientific standards or scrutiny.
  • The next examples I want to bring up refer to retracted articles from peer-reviewed journals. Since science is a self-correcting process, rather than a decree of absolutes, mistakes and fraud are corrected.
  • Briefly, I will show you exactly how to tell if the resource you are reading is an actual, peer-reviewed scientific article.
  • How does science go from experiments to the news?
  • researchers outline exactly how they conducted their experiments so other researchers can replicate them, build upon them, or provide quality assurance for them. This scientific report does not go straight to the nearest science journalist. Websites and news outlets like Scientific American or The Atlantic do not publish scientific articles.
  • Here is a quick checklist that will help you figure out if you’re viewing a scientific paper.
  • Once it’s written up, researchers send this manuscript to a journal. Other experts in the field then provide comments, feedback, and critiques. These peer reviewers ask researchers for clarification or even more experiments to strengthen their results. Peer review often takes months or sometimes years.
  • Some peer-reviewed scientific journals are Science and Nature; other scientific articles are searchable through the PubMed database. If you’re curious about a topic, search for scientific papers.
  • Peer-review is crucial! If you’re assessing the quality of evidence for claims, peer-reviewed research is a strong indicator
  • Finally, there are platforms for scientists to review research even after publication in a peer-reviewed journal. Although most scientists conduct experiments and interpret their data objectively, they may still make errors. Many scientists use Twitter and PubPeer to perform a post-publication review
  • Step 3. Are You Practicing Objectivity?
  • To finish off, I want to discuss common cognitive errors that we tend to make. Finally, there are some framing questions to ask at the end of our research to help us with assessing any information that we find.
  • Dunning-Kruger effect: Why do we rely on experts? In 1999, David Dunning and Justin Kruger published “Unskilled and unaware of it: how difficulties in recognizing one’s own incompetence lead to inflated self-assessments.” They found that the less a person understands about a topic, the more confident of their abilities or knowledge they will be
  • How does this relate to critical thinking? If you’re reading a claim sourced or written by somebody who lacks expertise in a field, they are underestimating its complexity. Whenever possible, look for an authoritative source when synthesizing and evaluating evidence for a claim.
  • Survivorship bias: Ever heard someone argue that we don’t need vaccines or seatbelts? After all, they grew up without either of them and are still alive and healthy!These arguments are appealing at first, but they don’t account for any cases of failures. They are attributing a misplaced sense of optimism and safety by ignoring the deaths that occurred resultant from a lack of vaccinations and seatbelts
  • To practice critical thinking with these kinds of claims, we must ask the following questions:Does this claim emerge from a peer-reviewed scientific article? Has this paper been retracted?Does this article appear in a reputable journal?What is the expert consensus on this article?
  • Now with all the evidence we’ve gathered, we ask ourselves some final questions. There are plenty more questions you will come up with yourself, case-by-case.Who is making the original claim?Who supports these claims? What are their qualifications?What is the evidence used for these claims?Where is this evidence published?How was the evidence gathered?Why is it important?
  • “even if some data is supporting a claim, does it make sense?” Some claims are deceptively true but fall apart when accounting for this bias.
tongoscar

US-China tech war to be 'defining issue of this century', despite signing of phase one ... - 0 views

www.scmp.com/...-issue-century-despite-signing

shared by tongoscar on 20 Jan 20 - No Cached
  • Forget the phase one deal, a bitter superpower tech war will overshadow any minor progression in US-China relations emanating from this week’s trade agreement.That is the message contained in a new report to be released on Monday, the author of which says that tariffs are “a subset in a much larger, overarching, systemic rivalry between two superpowers, which is the defining issue of this century”.
  • The US has already used export controls to ban Chinese firms from accessing vital US technology and as smart devices, 5G and the internet of things become more pervasive, the definition of “dual use goods”, commercial products that can be used for military purposes, will widen.
  • Even while pursuing a trade accord on one hand, the US has been actively trying to reduce technological integration with China on the other.As US President Donald Trump and China’s Vice-Premier Liu He were signing the phase one deal in the White House, the US was lobbying Britain to ban Huawei from its “critical national infrastructure” and considering plans to invest at least US$1.25 billion “in Western-based alternatives to Chinese equipment providers Huawei and ZTE”.
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  • China is aiming to increase its reliance on domestic production for key components, including chips and controlling systems, to 75 per cent by 2025, the former minister said.
  • A ban on Huawei buying US tech combined with the overall market uncertainty from the tech war led to Broadcom revising down its 2019 revenue estimate by US$2 billion.However, given that the most advanced Chinese producers of semiconductor technology are two to three generations behind their US rivals, China would be the major short-term loser should decoupling continue, Capri said.
  • “While there are changes to some Chinese technology policies, phase two is unlikely to make much progress in addressing the two countries’ rivalry,” said Chris Rogers, Research Analyst at Panjiva, S&P Global Market Intelligence.
Javier E

Is Anything Still True? On the Internet, No One Knows Anymore - WSJ - 1 views

www.wsj.com/...-true-on-the-internet-89843150

truth trust fake misinformation authenticity social media AI deepfake generative propaganda

shared by Javier E on 11 Nov 23 - No Cached
  • Creating and disseminating convincing propaganda used to require the resources of a state. Now all it takes is a smartphone.
  • Generative artificial intelligence is now capable of creating fake pictures, clones of our voices, and even videos depicting and distorting world events. The result: From our personal circles to the political circuses, everyone must now question whether what they see and hear is true.
  • exposure to AI-generated fakes can make us question the authenticity of everything we see. Real images and real recordings can be dismissed as fake. 
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  • “When you show people deepfakes and generative AI, a lot of times they come out of the experiment saying, ‘I just don’t trust anything anymore,’” says David Rand, a professor at MIT Sloan who studies the creation, spread and impact of misinformation.
  • This problem, which has grown more acute in the age of generative AI, is known as the “liar’s dividend,
  • The combination of easily-generated fake content and the suspicion that anything might be fake allows people to choose what they want to believe, adds DiResta, leading to what she calls “bespoke realities.”
  • Examples of misleading content created by generative AI are not hard to come by, especially on social media
  • The signs that an image is AI-generated are easy to miss for a user simply scrolling past, who has an instant to decide whether to like or boost a post on social media. And as generative AI continues to improve, it’s likely that such signs will be harder to spot in the future.
  • “What our work suggests is that most regular people do not want to share false things—the problem is they are not paying attention,”
  • in the course of a lawsuit over the death of a man using Tesla’s “full self-driving” system, Elon Musk’s lawyers responded to video evidence of Musk making claims about this software by suggesting that the proliferation of “deepfakes” of Musk was grounds to dismiss such evidence. They advanced that argument even though the clip of Musk was verifiably real
  • are now using its existence as a pretext to dismiss accurate information
  • People’s attention is already limited, and the way social media works—encouraging us to gorge on content, while quickly deciding whether or not to share it—leaves us precious little capacity to determine whether or not something is true
  • If the crisis of authenticity were limited to social media, we might be able to take solace in communication with those closest to us. But even those interactions are now potentially rife with AI-generated fakes.
  • what sounds like a call from a grandchild requesting bail money may be scammers who have scraped recordings of the grandchild’s voice from social media to dupe a grandparent into sending money.
  • companies like Alphabet, the parent company of Google, are trying to spin the altering of personal images as a good thing. 
  • With its latest Pixel phone, the company unveiled a suite of new and upgraded tools that can automatically replace a person’s face in one image with their face from another, or quickly remove someone from a photo entirely.
  • Joseph Stalin, who was fond of erasing people he didn’t like from official photos, would have loved this technology.
  • In Google’s defense, it is adding a record of whether an image was altered to data attached to it. But such metadata is only accessible in the original photo and some copies, and is easy enough to strip out.
  • The rapid adoption of many different AI tools means that we are now forced to question everything that we are exposed to in any medium, from our immediate communities to the geopolitical, said Hany Farid, a professor at the University of California, Berkeley who
  • To put our current moment in historical context, he notes that the PC revolution made it easy to store and replicate information, the internet made it easy to publish it, the mobile revolution made it easier than ever to access and spread, and the rise of AI has made creating misinformation a cinch. And each revolution arrived faster than the one before it.
  • Not everyone agrees that arming the public with easy access to AI will exacerbate our current difficulties with misinformation. The primary argument of such experts is that there is already vastly more misinformation on the internet than a person can consume, so throwing more into the mix won’t make things worse.
  • it’s not exactly reassuring, especially given that trust in institutions is already at one of the lowest points in the past 70 years, according to the nonpartisan Pew Research Center, and polarization—a measure of how much we distrust one another—is at a high point.
  • “What happens when we have eroded trust in media, government, and experts?” says Farid. “If you don’t trust me and I don’t trust you, how do we respond to pandemics, or climate change, or have fair and open elections? This is how authoritarianism arises—when you erode trust in institutions.”
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