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Lawrence Hrubes

Five bizarre 'lessons' in Indian textbooks - BBC News - 0 views

  • India, which has a literacy level well below the global average, has intensified its efforts in the field of education. In 2012 the country passed the Right to Education act which guarantees free and compulsory education for all children until the age of 14.However, some of the "facts" that have been found in textbooks around the country have given rise to speculation over what exactly passes for "education" in India.Glaring mistakes, downright lies and embellishments in textbooks are often featured in local media. A trend that is all the more worrying, given that India's education system promotes rote learning at the cost of analytical thinking.
markfrankel18

The Morality of Robotic War - NYTimes.com - 0 views

  • Humans must ultimately bear moral responsibility and face the horror of war squarely — not outsource it to machines. And people must be able to remain in control of a weapon and manage its behavior. We cannot have weapons that are intrinsically uncontrollable or wildly unpredictable. After you fire a bullet, you can’t take it back, but its trajectory is predictable. The key is to ensure that future weapons that behave like self-steering bullets do not run amok.
markfrankel18

BBC - Future - The invisible downside of cheating in life - 1 views

  • The implication is that people in Chance's experiment – people very much like you and me – had tricked themselves into believing they were smarter than they were. There may be benefits from doing this – confidence, satisfaction, or more easily gaining the trust of others – but there are also certainly disadvantages. Whenever circumstances change and you need to accurately predict how well you'll do, it can cost to believe you're better than you are.
Lawrence Hrubes

Elizabeth Kolbert: Why Are We So Busy? : The New Yorker - 0 views

  • n the winter of 1928, John Maynard Keynes composed a short essay that took the long view. It was titled “Economic Possibilities for Our Grandchildren,” and in it Keynes imagined what the world would look like a century hence. By 2028, he predicted, the “standard of life” in Europe and the United States would be so improved that no one would need to worry about making money. “Our grandchildren,” Keynes reckoned, would work about three hours a day, and even this reduced schedule would represent more labor than was actually necessary.
  • According to Keynes, the nineteenth century had unleashed such a torrent of technological innovation—“electricity, petrol, steel, rubber, cotton, the chemical industries, automatic machinery and the methods of mass production”—that further growth was inevitable. The size of the global economy, he forecast, would increase sevenfold in the following century, and this, in concert with ever greater “technical improvements,” would usher in the fifteen-hour week.
  • Four-fifths of the way through Keynes’s century, half of his vision has been realized. Since “Economic Possibilities for Our Grandchildren” was published, the U.S. gross domestic product has grown, in real terms, by a factor of sixteen, and G.D.P. per capita by a factor of six. And what holds for the United States goes for the rest of the world, too: in the past eighty years, the global economy has grown at a similar rate.
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  • But if we have become, in aggregate, as rich as Keynes imagined, this wealth has not translated into leisure. (When was the last time someone you know complained about having too little to do?) In terms of economic theory, this is puzzling. In terms of everyday life, it’s enough to, well, induce a nervous breakdown.
Lawrence Hrubes

Rage Against The Machines | FiveThirtyEight - 0 views

  • Computers are very, very fast at making calculations. Moreover, they can be counted on to calculate faithfully—without getting tired or emotional or changing their mode of analysis in midstream. But this does not mean that computers produce perfect forecasts, or even necessarily good ones. The acronym GIGO (“garbage in, garbage out”) sums up this problem. If you give a computer bad data, or devise a foolish set of instructions for it to analyze, it won’t spin straw into gold. Meanwhile, computers are not very good at tasks that require creativity and imagination, like devising strategies or developing theories about the way the world works. Computers are most useful to forecasters, therefore, in fields like weather forecasting and chess where the system abides by relatively simple and well-understood laws, but where the equations that govern the system must be solved many times over in order to produce a good forecast. They seem to have helped very little in fields like economic or earthquake forecasting where our understanding of root causes is blurrier and the data is noisier. In each of those fields, there were high hopes for computer-driven forecasting in the 1970s and 1980s when computers became more accessible to everyday academics and scientists, but little progress has been made since then.
Lawrence Hrubes

How Children Learn To Read - The New Yorker - 0 views

  • Why is it easy for some people to learn to read, and difficult for others? It’s a tough question with a long history. We know that it’s not just about raw intelligence, nor is it wholly about repetition and dogged persistence. We also know that there are some conditions that, effort aside, can hold a child back. Socioeconomic status, for instance, has been reliably linked to reading achievement. And, regardless of background, children with lower general verbal ability and those who have difficulty with phonetic processing seem to struggle. But what underlies those differences? How do we learn to translate abstract symbols into meaningful sounds in the first place, and why are some children better at it than others?
  • When Hoeft took into account all of the explanatory factors that had been linked to reading difficulty in the past—genetic risk, environmental factors, pre-literate language ability, and over-all cognitive capacity—she found that only one thing consistently predicted how well a child would learn to read. That was the growth of white matter in one specific area of the brain, the left temporoparietal region. The amount of white matter that a child arrived with in kindergarten didn’t make a difference. But the change in volume between kindergarten and third grade did.
  • She likens it to the Dr. Seuss story of Horton and the egg. Horton sits on an egg that isn’t his own, and, because of his dedication, the creature that eventually hatches looks half like his mother, and half like the elephant. In this particular case, Hoeft and her colleagues can’t yet separate cause and effect: Were certain children predisposed to develop strong white-matter pathways that then helped them to learn to read, or was superior instruction and a rich environment prompting the building of those pathways?
markfrankel18

How Our Minds Mislead Us: The Marvels and Flaws of Our Intuition | Brain Pickings - 2 views

  • There is no sharp line between intuition and perception. … Perception is predictive. . . . If you want to understand intuition, it is very useful to understand perception, because so many of the rules that apply to perception apply as well to intuitive thinking. Intuitive thinking is quite different from perception. Intuitive thinking has language. Intuitive thinking has a lot of word knowledge organized in different ways more than mere perception. But some very basic characteristics [of] perception are extended almost directly to intuitive thinking.
  • What’s interesting is that many a time people have intuitions that they’re equally confident about except they’re wrong. That happens through the mechanism I call “the mechanism of substitution.” You have been asked a question, and instead you answer another question, but that answer comes by itself with complete confidence, and you’re not aware that you’re doing something that you’re not an expert on because you have one answer. Subjectively, whether it’s right or wrong, it feels exactly the same. Whether it’s based on a lot of information, or a little information, this is something that you may step back and have a look at. But the subjective sense of confidence can be the same for intuition that arrives from expertise, and for intuitions that arise from heuristics. . . .
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    The Marvels and Flaws of Intuition (from the Brain Pickings Blog)
Lawrence Hrubes

The Rise of Hate Search - The New York Times - 1 views

  • 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.
markfrankel18

Biology's Holy Grail: The Species And Its Controversial Recent History | IFLScience - 1 views

  • And, the basic unit of taxonomy – ‘the species’ – remains an elusive and controversial concept despite its fundamental importance to science. Yet, few people outside of biology and philosophy realise that ‘the species’ has been at the centre of a major controversy in science for much of the last 50 years.
  • Taxonomy is a fundamental or ‘enabling’ science that underpins all of biology and its many related fields including medical research.
  • • How does the species category compare with other scientific groups or types of things like say the chemical elements? • Does it play the same kind of role in science – conveying the same sorts of information and allowing us to make predictions about nature? • What’s the best, most objective, way to recognise a species?
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  • So, it turns out we’ve all been cheated by the textbooks we read in high school or university. Short-changed by our science teachers and biology lecturers.
markfrankel18

The Cold Logic of Drunk People - Atlantic Mobile - 2 views

  • "The idea was to look more at the more moral and ethical implications of how alcohol might affect decision-making," said Aaron Duke, one of the researchers.* His team found a correlation between each subject's level of intoxication and his or her willingness to flip the switch or push the person—the drunker the subject, the more willing he or she was to kill one hypothetical person for the sake of the hypothetical many. This choice follows the logic of utilitarianism: More good is done by saving five people than harm is done by killing one. This "really undermines the notion that utilitarian preferences are merely the result of more deliberation," said Duke, who also co-authored a paper on the study, charmingly titled, "The drunk utilitarian: Blood alcohol concentration predicts utilitarian responses in moral dilemmas." There's a fabulous irony in the idea that drunk people are emotionally steeled rationalists who are willing to do whatever it takes to save lives. But Duke and his research partner, Laurent Bègue, aren't necessarily arguing that drunk people are ace philosophers and logicians; it's more that their findings challenge common assumptions about how people make decisions.
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