Category: Science
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Genetics and the Aryan Migration Debate
“The thorniest, most fought-over question in Indian history is slowly but surely getting answered: did Indo-European language speakers, who called themselves Aryans, stream into India sometime around 2,000 BC – 1,500 BC when the Indus Valley civilisation came to an end, bringing with them Sanskrit and a distinctive set of cultural practices? Genetic research based on an avalanche of new DNA evidence is making scientists around the world converge on an unambiguous answer: yes, they did.” (—Tony Joseph in The Hindu; more here.)Even before these genetic studies of recent years, it has long been clear which way the scholarly evidence has overwhelmingly leaned, though the evidence had gaps that the “out-of-India” folks exploited to advance their rival theory. These new findings from genetics, if correct, imply that Vedic Sanskrit, the Holy Vedas and various cultural practices of these migrants (especially the varna system) are not Subcontinental in origin (at least their precursors are not). They came via migration, as did Islam, the Qur’an, and the Persian language. In other words, the religious beliefs of all contemporary Indians—Hindus, Muslims, Christians, and others—have descended from what migrants brought in (and subsequent accretions, fusions, innovations, conversions, appropriations); nor is India the mother of all Indo-European languages.
This ain’t going to make the “out-of-India” theorists too happy. They’re largely a brigade of proud Hindu “scholars” obsessed with the idea that there was no Aryan migration into South Asia, allowing them to claim South Asia as the indigenous homeland / birthplace of Hinduism’s earliest scriptures and their language (Sanskrit, but also its earliest ancestor, proto-Indo European)—and so also of Hinduism (of Brahminism, more accurately, but that’s a separate discussion), which evolved out of them. They also claimed that the language of the Indus Valley Civilization was a proto-Sanskrit, though its “linguistic script” remains undeciphered (it’s not even clear that the inscriptions represent a linguistic script)! Trolls have plastered such claims on countless Internet forums, but they’ve been mostly led by nationalistic windbaggery (aka Hindutva), wishful thinking, and gaps in rival theories—not on solid evidence from linguistics, philology, archaeology or anything else.
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The Reality of Artificial Intelligence
A great deal of fear, excitement, and hype has lately grown around Artificial Intelligence (AI). This is partly because advances in machine learning keep surprising—and even overtaking—us in a growing number of domains, such as disease diagnosis, driving, language translation, and complex forecasting. To add fuel to fire, AI enthusiasts keep making dramatic claims about the imminence of Singularity, human-level AI, super intelligence, and the threat of machines taking over the world and even enslaving us! How warranted are these claims? We owe it to ourselves to better understand both the current state, the potential, and the limitations of AI, to separate hype from reality, and to reflect on the problem of AI philosophically—so we can focus on the actual challenges we’re likely to face as AI becomes more common.AI can certainly improve human lives on many fronts, but this promise coexists with the fear that AI will cause havoc in labor markets by not just appropriating more blue collar work, as industrial automation has been doing for decades, but even a lot of skilled white collar work. This disruption—which will further concentrate wealth and create jobless hordes and cause new social upheavals in nation-states—will likely occur and needs to be taken seriously. What makes AI-led disruption different than earlier waves of technological disruption is that earlier the loss of manufacturing jobs was met by the rise of services sector jobs, but this time the latter too are at risk, with no evident replacement in sight. This is a recipe for jobless growth, with GDP and unemployment rising together—a grave problem that may well require disruptive solutions.
As for the more dramatic claims about AI, my view, which I articulated in The Dearth of Artificial Intelligence (2009), remains that even if we develop ‘intelligent’ machines (much depends here on what we deem ‘intelligent’), odds are near-zero that machines will come to rival human-level general intelligence if their creation bypasses the particular embodied experience of humans forged by eons of evolution. By human-level intelligence (or strong AI, versus weak or domain-specific AI), I mean intelligence that’s analogous to ours: rivaling our social and emotional intelligence; mirroring our instincts, intuitions, insights, tastes, aversions, adaptability; similar to how we make sense of brand new contexts and use our creativity, imagination, and judgment to breathe meaning and significance into novel ideas and concepts; to approach being and time like we do, informed by our fear, desire, delight, sense of aging and death; and so on. Incorporating all of this in a machine will not happen by combining computing power with algorithmic wizardry. Unless machines can experience and relate to the world like we do—which no one has a clue how—machines can’t make decisions like we do. Unless machines can suffer like us, they will not think like us. (Another way to say this is that reductionism has limits, esp. for highly complex systems like the biosphere and human mind/culture, when the laws of nature run out of descriptive and predictive steam—not because our science is inadequate but due to irreducible and unpredictable emergent properties inherent in complex systems.)
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Harari on Nationalism vs. Globalism
Here is a breezy conversation that abounds with big picture thinking. If you enjoy this, listen to a talk by Harari, The Future of Humanity, and read this interview where he describes what he gets out of Vipassana meditation, this article on the rise of Donald Trump, and this Q&A.
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Skepticism as an Equal Opportunity Sport
Knowledge never progresses unencumbered by ordinary human politics. Clubbiness, careerism, prejudice, personality clashes, bigotry, corruption, charm, and other human factors affect the advancement and dissemination of all knowledge, even in the hallowed academies of the West. While the scientific disciplines may have the best inbuilt methodologies for self-correction, still their practice isn’t immune to these impairments of judgment and objectivity.In his recent Guardian article, The Sugar Conspiracy, Ian Leslie reminds us of how important individual personalities or even the fashionability of ideas can dominate, pervert, or slow the progress of entire fields of science. He writes,
In a 2015 paper titled Does Science Advance One Funeral at a Time?, a team of scholars at the National Bureau of Economic Research sought an empirical basis for a remark made by the physicist Max Planck: “A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it.”
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The Genomic Ancient DNA Revolution
Population genetics is an emerging field that’s shedding new light on ancient human migrations. It complements linguistics and archaeology, which have until now been the primary avenues for understanding prehistory. David Reich, a leading geneticist and a Harvard professor, has taken special interest in the much contested issue of the original homeland of Indo-European (IE) languages and the mixing of populations in India. Watch a video conversation with him on the edge.org page below (also transcribed).
Nothing Reich says will comfort the “out-of-India” theorists, largely a Hindutva brigade of “scholars” who claim that there was no Aryan migration into India; that instead a migration happened from India to Europe; that IE languages originated in the Indian Subcontinent from a proto-Sanskrit; that the people of the Indus Valley Civilization spoke this proto-Sanskrit (never mind that their script remains undeciphered; there’s no consensus on whether it is even a linguistic script); that the Vedas are wholly indigenous in inspiration, etc. It’s amazing how many people on the Internet confidently assert that the Aryan migration theory has been “discredited”.
Of course much of this was/is nationalistic windbaggery, based on wishful thinking and gaps in rival theories, not on any solid evidence from linguistics or archaeology. Population genetics is now producing a clearer picture once and for all. But we’re not there yet, even though Reich’s work has bolstered the Kurgan hypothesis, which puts the IE homeland in the Pontic-Caspian steppe. Watch this field for more definitive revelations in the years ahead.
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The Road to Fixing Air Pollution in Delhi
I have a piece in The Wire today: The Road to Fixing Air Pollution in Delhi, Beyond Odd-even. Among other things, this attempts to distill the research and learning from my recent months at the Delhi Dialogue Commission, an advisory body to the Government of NCT of Delhi. Also an announcement on the right for my talk this weekend that’s open to all.
An unprecedented public health crisis has been unfolding in Delhi: 40% of our kids now fail lung capacity tests. Respiratory emergencies have tripled in the last seven years, with no relief in sight. Just breathing our air, full of toxic gases and particulates, has raised the incidence of strokes, heart disease, cancers, birth defects, pneumonia, and more. In Delhi alone, an estimated 80 people are dying daily from conditions provoked by air pollution. Much like smoking cigarettes, it’s shaving years off our lives.Though some fare worse than others, none are immune: rich or poor, young or old. A high burden of disease erodes quality of life, family finances, and the economy. What will be the cost of this health crisis, in human lives, in healthcare, in lost productivity?
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A Plea for Culinary Modernism
A Plea for Culinary Modernism is a though-provoking essay on modern food and our attitudes towards it by Rachael Laudan, food historian and philosopher of science and technology. “The obsession with eating natural and artisanal,” she argues, “is ahistorical. We should demand more high-quality industrial food.” She is also the author of “Cuisine and Empire: Cooking in World History”, now on my reading list.
As an historian I cannot accept the account of the past implied by Culinary Luddism, a past sharply divided between good and bad, between the sunny rural days of yore and the gray industrial present. My enthusiasm for Luddite kitchen wisdom does not carry over to their history, any more than my response to a stirring political speech inclines me to accept the orator as scholar.The Luddites’ fable of disaster, of a fall from grace, smacks more of wishful thinking than of digging through archives. It gains credence not from scholarship but from evocative dichotomies: fresh and natural versus processed and preserved; local versus global; slow versus fast: artisanal and traditional versus urban and industrial; healthful versus contaminated and fatty. History shows, I believe, that the Luddites have things back to front. That food should be fresh and natural has become an article of faith. It comes as something of a shock to realize that this is a latter-day creed. For our ancestors, natural was something quite nasty. Natural often tasted bad.
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Under the Dome
“Under the Dome” is a brilliant documentary on air pollution in China that has been seen by millions. Scary as hell. India is catching up fast and would do well to avoid some of China’s mistakes. Not likely though. Things are going to get much worse in India before people wake up.
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The Quantum Indians
A film on the life and work of three Indian scientists: Satyendra Nath Bose, Chandrasekhara Venkata Raman, and Meghnad Saha, “the significance of whose contributions are of vital importance even today in quantum physics, fibre optics, nuclear science or astrophysics.” The film’s biographical sketches are celebratory and tinged with patriotic pride, but it still furnishes an engaging overview of their life and work.
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Mysteries of the Unseen World
“We live in a world of unseeable beauty, so subtle and delicate that it is imperceptible to the human eye. To bring this invisible world to light, filmmaker Louie Schwartzberg bends the boundaries of time and space with high-speed cameras, time lapses and microscopes. At TED2014, he shares highlights from his latest project, a 3D film titled Mysteries of the Unseen World, which slows down, speeds up, and magnifies the astonishing wonders of nature.” Must see.
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Sugar: The Intimate Enemy
This brilliant talk by Dr. Robert Lustig persuasively argues that sugar, based on how our bodies metabolize it in the liver, is no less a poison than alcohol. He explains how our bodies process different carbohydrates like glucose, sucrose (table sugar), and fructose, and why sugar in the latter two forms is the primary cause of obesity, high blood pressure, heart disease, diabetes, and more. He also debunks many common myths of health and nutrition by showing that a calorie is not a calorie (its source is important), why exercising is not about burning calories but improving metabolism, why fat is nowhere near as bad as sugar, etc. Also read this review of the related new documentary, Fed Up.
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More From the Annals of Animal Intelligence
…. [Head keeper Jerry] Stones finally managed to catch Fu Manchu in the act. First, the young ape climbed down some air-vent louvers into a dry moat. Then, taking hold of the bottom of the furnace door, he used brute force to pull it back just far enough to slide a wire into the gap, slip a latch and pop the door open. The next day, Stones noticed something shiny sticking out of Fu’s mouth. It was the wire lock pick, bent to fit between his lip and gum and stowed there between escapes.Apparently, Orangutans are the escape artists of the animal world. This particular incident happened back in 1968, but scientists at the time weren’t paying attention, as they were busy with their apes struggling with language and performing tasks in their labs.
However, Eugene Lynden, author of several books on animal intelligence, found it more than interesting. Lynden’s 1999 article on animal intelligence is remarkable for the way that it’s astutely anecdotal. Lynden had realized what “now seems obvious: if animals can think, they will probably do their best thinking when it serves their purposes, not when some scientist asks them to”, and he then began to speak to a broad range of people who work intimately with animals: zookeepers, veterinarians, trainers, and yes, researchers. He says,
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A New Green Revolution?
The Green Revolution of the 60s and 70s is best associated with higher yields through new innovations in agricultural science and technology. To attain its impressive results however, the new farming practices used synthetic fertilizers and chemical pesticides which ravaged the soil, damaged ecosystems, polluted groundwater, encouraged crop monocultures, and raised the incidence of certain diseases. The resulting land degradation fueled the search for new land and deforestation. In other words, modern intensive farming practices are not sustainable, and various experiments worldwide have tried to make them sustainable while increasing yields at lower cost — the agricultural holy grail.
Here is a promising Al-Jazeera story about “two million farmers in the Indian state of Andhra Pradesh [who] have ditched chemical pesticides in favour of natural repellants and fertilisers, as part of a growing eco-agriculture movement [that] has improved soil health and biodiversity, reduced costs and upped yields.” Could this catch on more widely?
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On Eating Animals
The latest issue of the Humanist magazine (July-Aug ’13) has a slightly modified version of my essay from last year.
Clearly, most people don’t even know about the horror and pain we inflict on billions of birds and mammals in our meat factories. But there’s no good excuse for this, is there? It’s more likely that we don’t want to know—can’t afford to know for our own sake—so we turn a blind eye and trust the artifice of bucolic imagery on meat packaging. Some see parallels here with the German people’s willful denial of the concentration camps that once operated around them, or call those who consume factory-farmed meat little Eichmanns. “For the animals, it is an eternal Treblinka,” wrote Isaac Bashevis Singer (who also used to say he turned vegetarian “for health reasons—the health of the chicken”).Predictably enough, many others are offended by such comparisons. They say that comparing the industrialized abuse of animals with the industrialized abuse of humans trivializes the latter. There are indeed limits to such comparisons, though our current enterprise may be worse in at least one respect: it has no foreseeable end. We seem committed to raising billions of sentient beings year after year only to kill them after a short life of intense suffering. Furthermore, rather than take offense at polemical comparisons—as if others are obliged to be more judicious in their speech than we are in our silent deeds—why not reflect on our apathy instead? Criticizing vegetarians and vegans for being self-righteous—or being moral opportunists in having found a new way of affirming their decency to themselves—certainly doesn’t absolve us from the need to face up to our role in perpetuating this cycle of violence and degradation.
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To Save Everything, Click Here
The innovations of the last two decades, led by the Internet and mobile devices, have fundamentally altered the way so many of us live, work, and play. Is modern technology a problem or a solution—and why? How is the disruptive impact of the Internet shaping human societies and cultures, our values, ideas of Self, and relationships? What trends should worry us the most, and who should we hold responsible for them? The viewpoints here are perhaps as numerous as people
themselves, even as we cluster them in categories like evangelists,
pioneers, enthusiasts, skeptics, laggards, technophobes, curmudgeons,
and so on.Evgeny Morozov, an analyst of technological trends, has a new book, To Save Everything, Click Here: The Folly of Technological Solutionism. In it, he attempts a critique of a culture that worships technology as the great hope and savior of humanity. I just read an interesting exchange between Morozov and Farhad Manjoo, technology columnist for Slate. I might read the book though my impression from this exchange is that while attempts like Morozov’s are badly needed and he does raise many good questions, in the end young Morozov seems to me simply out of his depth for the ambitious task he has taken on. Here are links to the exchange:
Entry 1: Manjoo’s opening salvo against Morozov
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Of Bonobos and Men
Primatologist Frans de Waal has a new book, The Bonobo and the Atheist. Below is an excerpt from an early review in the New Republic (click photo for the Amazon listing; the Publisher’s Weekly blurb is here).
Those familiar with de Waal’s previous books … will recognize many of the same arguments resurfacing here, including the idea that human morality has biological origins. “Fairness and justice are … best looked at as ancient capacities. They derive from the need to preserve harmony in the face of resource competition.” De Waal uses the bonobo—a peaceful, sex-loving primate who may be as closely related to us, or more closely related, than the more Machiavellian chimpanzee—to attack the prevailing notion of human nature as selfish and violent, and that we are constantly battling to suppress our terrible “animal nature.” “Everything science has learned in the past few decades argues against this pessimistic view that morality is a thin veneer over a nasty human nature.” What’s new here is that de Waal wades directly into the atheism-versus-religion debate, which he claims is often mistakenly cast as a science-versus-religion debate. He argues that a biologically evolved “bottom-up” morality obviates the need for the “top-down” morality imposed by religion. And yet, he sees science (and himself) as aligned with secular humanism, which is not necessarily anti-religion. He would like to see the influence of religion fade, but acknowledges that a moral code is not all religion provides: “The question is not so much whether religion is true or false, but how it shapes our lives, and what might possibly take its place.”
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State of the Species
Charles C. Mann discusses how homo sapiens, from very humble beginnings devoid of language or symbol use, went from anatomically to behaviorally modern humans, becoming thereafter a highly successful species — so successful that it now risks wiping itself out, unless …
Homo sapiens emerged on the planet about 200,000 years ago, researchers believe. From the beginning, our species looked much as it does today. If some of those long-ago people walked by us on the street now, we would think they looked and acted somewhat oddly, but not that they weren’t people. But those anatomically modern humans were not, as anthropologists say, behaviorally modern. Those first people had no language, no clothing, no art, no religion, nothing but the simplest, unspecialized tools. They were little more advanced, technologically speaking, than their predecessors—or, for that matter, modern chimpanzees. (The big exception was fire, but that was first controlled by Homo erectus, one of our ancestors, a million years ago or more.) Our species had so little capacity for innovation that archaeologists have found almost no evidence of cultural or social change during our first 100,000 years of existence. Equally important, for almost all that time these early humans were confined to a single, small area in the hot, dry savanna of East Africa (and possibly a second, still smaller area in southern Africa). But now jump forward 50,000 years. East Africa looks much the same. So do the humans in it—but suddenly they are drawing and carving images, weaving ropes and baskets, shaping and wielding specialized tools, burying the dead in formal ceremonies, and perhaps worshipping supernatural beings. They are wearing clothes—lice-filled clothes, to be sure, but clothes nonetheless. Momentously, they are using language. And they are dramatically increasing their range. Homo sapiens is exploding across the planet.
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My Life as a Turkey
On this Thanksgiving Day, consider watching this extraordinary and beautifully filmed Nature documentary in which naturalist Joe Hutto raises 16 wild turkeys from incubation to adulthood, an experience that changed his life. As their turkey mother, Hutto spent over a year in a Florida forest with these birds, each developing a complex and unique relationship with him. He shows us their stages of development, their innate knowledge of the environment, their curiosity and survival instincts. He exults at their distinct personalities, social and emotional lives, individuality and playfulness, and their different appetites for physical affection.Hutto gets very immersed in their lives, begins to understand their communication, and learns to “talk turkey”. He identifies over 30 distinct turkey vocalizations for other animals like rattlesnakes and hawks. He explains how “within each of those calls are inflections that have very different meanings”. His bond with one bird in particular, and the way it ends, is especially remarkable and unexpected. En route, Hutto also reveals his own shifting state of mind and what he has learned from this experience about his own life. It might well become hard to see turkeys as “dumb birds” after this documentary, which, incidentally, won the 2012 Emmy for Outstanding Nature Programming.
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When Einstein Met Tagore
An enchanting conversation between Einstein and Tagore, which concludes with Einstein saying, “Then I am more religious than you are!”
EINSTEIN: Truth, then, or Beauty is not independent of Man?TAGORE: No.
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Dan Miller on Climate Change
In this talk, Dan Miller describes how climate change is shaping up to be worse than was predicted by the movie An Inconvenient Truth, why most humans are unable to grasp this threat (because it is invisible, without historical precedent, has a complex causality, is seen to have long drawn out or intangible consequences, lacks a well-defined enemy to pursue, etc.), and what we ought to be doing about it pronto.
