Category: Science
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Chris Schoen on Free Will
The old debate on free will has lately flared up again. Are we “biochemical puppets, swayed by forces beyond our conscious control”, or “authors of our own actions, beliefs, and desires”? Or something in between? The Chronicle of Higher Education recently invited several thinkers to weigh in on the question of free will, which then spawned additional commentaries. One that I really enjoyed reading is this essay by my friend, Chris Schoen. The Iris Murdoch quote he provides with commentary towards the end is particularly insightful.
Sometimes people have arguments they don’t want to have in order to shore up some principle they wish they didn’t have to defend. Actually, most debate can probably be characterized this way, though it doesn’t always nestle up against outright absurdity the way that the argument I will speak of here is so prone to do, namely the argument that something called “Determinism” means that something else called “Free Will” cannot exist.This is a rather hot debate right now, largely because advocates of the “incompatibilist” or “hard determinist” view I have just described believe they smell blood in the water and have moved in for the kill. Sam Harris, the smartest man who was ever wrong about everything, has a recent book out on the topic (“Free Will,”) and Jerry Coyne, the smartest horse ever to be led to water while steadfastly refusing to drink, has made this topic a regular staple on his blog.
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Is There a Universal Grammar?
Do humans have an innate universal grammar, i.e., are we all born with certain foundational rules of language “hard-wired” in our brain—and which we don’t need to learn? The dominant theory in linguistics, long associated with Noam Chomsky, says yes. However, this is not entirely accepted in the field, and challengers have only increased. Many now lean away from innate universal rules, and towards innate capacities or instincts that are shaped by culture into rules. Here is an excellent article on the debate and the work of a leading challenger, Dan Everett.
A Christian missionary sets out to convert a remote Amazonian tribe. He lives with them for years in primitive conditions, learns their extremely difficult language, risks his life battling malaria, giant anacondas, and sometimes the tribe itself. In a plot twist, instead of converting them he loses his faith, morphing from an evangelist trying to translate the Bible into an academic determined to understand the people he’s come to respect and love.Along the way, the former missionary discovers that the language these people speak doesn’t follow one of the fundamental tenets of linguistics, a finding that would seem to turn the field on its head, undermine basic assumptions about how children learn to communicate, and dethrone the discipline’s long-reigning king, who also happens to be among the most well-known and influential intellectuals of the 20th century.
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Krauss on the Universe
Physicist Lawrence Krauss has a new book, A Universe from Nothing. I happen to like Krauss and have seen some of his lectures. He is brilliant, entertaining, and good at distilling cosmology for non-specialists (and the emerging picture of the cosmos is incredibly mind-bending). In his role as a science educator, I’ve also seen him as smarter on religion than the better known neo-atheists like Dawkins and Harris (which admittedly is not saying much, and Krauss seems to have gotten worse).It was the book’s subtitle, however, that really caught my attention: Why There Is Something Rather than Nothing. This is what Krauss has set out to explain—surely one of the greatest mysteries of all time, and perhaps the ultimate question in metaphysics. Can Krauss be serious, I thought? Then I read David Albert’s excellent review and I’m persuaded that we are no closer to answering that question than we were before this book, and I am really stunned that Krauss thinks he is answering it. Another reviewer has supplied what may be a more accurate subtitle: “How It Is That There Happens to Be This Something rather than Some Other Something.” Sure, this is not sexy but at least it’s not false marketing. Here is Albert’s review:
Lawrence M. Krauss, a well-known cosmologist and prolific popular-science writer, apparently means to announce to the world, in this new book, that the laws of quantum mechanics have in them the makings of a thoroughly scientific and adamantly secular explanation of why there is something rather than nothing. Period. Case closed. End of story. I kid you not. Look at the subtitle. Look at how Richard Dawkins sums it up in his afterword: “Even the last remaining trump card of the theologian, ‘Why is there something rather than nothing?,’ shrivels up before your eyes as you read these pages. If ‘On the Origin of Species’ was biology’s deadliest blow to supernaturalism, we may come to see ‘A Universe From Nothing’ as the equivalent from cosmology. The title means exactly what it says. And what it says is devastating.”
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Are There Human Races?
People now use the term “race” to refer to a host of human differences. Very often people tend to essentialize it with traits of character and intelligence, and are then deemed “racist” by others. Can talk of “human races” have a defensible biological specificity, or is it only a dubious social construct that we should promptly abandon? The answer is: it depends on what one means by “race”.
Jerry A. Coyne makes a fair case below for the term’s relevance in science. However, in his final paragraph, he falters seriously in saying that races “are certainly not ‘sociocultural constructs.’”—they are that, too, as is plainly evident in how so many non-biologists use the term. Indeed, given all the baggage, perhaps we are better off switching to other terms like ‘peoples’, ‘ethnicities’, ‘groups’, ‘castes’, etc.
One of the touchiest subjects in human evolutionary biology—or human biology in general—is the question of whether there are human races. Back in the bad old days, it was taken for granted that the answer was not only “yes,” but that there was a ranking of races (invariably done by white biologists), with Caucasians on top, Asians a bit lower, and blacks invariably on the bottom. The sad history of biologically based racism has been documented in many places, including Steve Gould’s book The Mismeasure of Man (yes, I know it’s flawed). -
The Secret Lives of Molecules
Drew Berry presents “stunning and scientifically accurate animations to illustrate how the molecules in our cells move and interact.” Even more astonishing is how all this stuff adds up to make a consciousness that is now typing these words into a computer!
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Why Are Men So Violent?
Most answers to this question posit a warlike propensity in men that is shaped by evolution. Jesse Prinz, professor of philosophy at the City University of New York, goes beyond this biological line of inquiry to look for the answers in the social history of humans.
It will not have gone unnoticed that men are more violent than women. Men perpetrate about 90 percent of the world’s homicides and start all of the wars. But why? A recent article in a prominent science journal contends that evolution has shaped men to be warriors. More specifically, the authors claim that men are biologically programmed to form coalitions that aggress against neighbors, and they do so in order to get women, either through force or by procuring resources that would make them more desirable. The male warrior hypothesis is alluring because it makes sense of male violence, but it is based on a dubious interpretation of the science. In my new book, I point out that such evolutionary explanations of behavior are often worse than competing historical explanations. The same is true in this case. There are simpler historical explanations of male violence, and understanding these is important for coping with the problem.A historical explanation of male violence does not eschew biological factors, but it minimizes them and assumes that men and woman are psychologically similar. Consider the biological fact that men have more upper-body strength than women, and assume that both men and women want to obtain as many desirable resources as they can. In hunter-gatherer societies, this strength differential doesn’t allow men to fully dominate women, because they depend on the food that women gather. But things change with the advent of intensive agriculture and herding. Strength gives men an advantage over women once heavy ploughs and large animals become central aspects of food production. With this, men become the sole providers, and women start to depend on men economically. The economic dependency allows men to mistreat women, to philander, and to take over labor markets and political institutions. Once men have absolute power, they are reluctant to give it up. It took two world wars and a post-industrial economy for women to obtain basic opportunities and rights.
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Do Antidepressants Work?
The short answer is yes, but not for the reasons one might imagine. Antidepressants work not because of their active ingredients but because of the placebo effect. In other words, a sugar pill works just as well as the antidepressant, and has none of the side effects of drugs that aim to fix “chemical imbalances” in the brain. This is the conclusion of a fresh new research study by Harvard scientist Irving Kirsch, which adds to an accumulating body of evidence on the medical inefficacy, and the dangers of antidepressants and other overprescribed psychotropic drugs for tens of millions of people who use them everyday (see video below; more resources here).
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Superior Autobiographical Memory
“Lesley Stahl reports on the recently discovered phenomenon of “superior autobiographical memory,” the ability to recall nearly every day of one’s life.” If your remembrance of things past is about average—as I think it is for me (though who knows, it might be worse)—this video will not only astonish you, it might make you feel inadequate and lead you to wonder how your life would have been different with this gift.
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On Mothers and Others
Anthropologist Melvin Konner reviews Mothers and Others: The Evolutionary Origins of Mutual Understanding by Sarah Blaffer Hrdy, who argues that “more than a million years ago, a line of apes began to rear their young differently than their Great Ape ancestors. From this new form of care came new ways of engaging and understanding each other. How such singular human capacities evolved, and how they have kept us alive for thousands of generations, is the mystery revealed in this bold and wide-ranging new vision of human emotional evolution.”
It is possible to see Hrdy’s most recent book, Mothers and Others, as the third in a trilogy that began with The Woman That Never Evolved. It may be the most important. As she demolished, in the first, the idol of an evolved passive femininity, and in the second, the serene, always giving maternal goddess, in her third synthetic work she takes on another cultural and biological ideal: the mother who goes it alone. In our once male-dominated vision of evolution, we had the lone brave man, the hunter with his spear, and the lone enduring woman nurturing her young beneath the African sun; they made a deal, the first social contract, exchanging the services each was suited to by genetic destiny.Hrdy has not been alone in challenging this myth. A conference and book edited by Richard Lee and Irven DeVore, although it was called Man the Hunter, showed that women brought in half or more of the food of hunter-gatherers by collecting vegetables, fruit, and nuts. This meant that, given the unpredictability of hunting success and the human need for plant foods, the primordial deal between the sexes was rather more complex than we thought. It also suggested that women had power in these societies; that men listened to them and decisions were made by consensus, not by male fiat as in more complex, hierarchical societies. …
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How Universal Is the Mind?
Human cultures have long evolved folk concepts to describe and explain human behavior. This essay “highlights the potential arbitrariness of how we’ve carved up the psychological realm—what we take for objective reality is revealed to be shaped by culture and language.”
If someone asked you to describe the psychological aspects of personhood, what would you say? Chances are, you’d describe things like thought, memory, problem-solving, reasoning, maybe emotion. In other words, you probably list the major headings of a cognitive psychology text-book. In cognitive psychology, we seem to take it for granted that these are, objectively, the primary components of “the mind” (even if you reject a mind/body dualism, you probably accept some notion that there are psychological processes similar to the ones listed above). I’ve posted previously about whether the distinction between cognitive and non-cognitive even makes sense. But, here, I want to think about the universality of the “mind” concept and its relationship to the modern view of cognition.In fact, this conception of the mind is heavily influenced by a particular (Western) cultural background. Other cultures assign different characteristics and abilities to the psychological aspects of personhood. Wierzbicka (2005) delves into this problem in detail. She argues that speakers of a particular language make assumptions about what must be universal based on their own ability to imagine doing without a certain concept. Important cross-cultural differences in meaning become lost in translation…. Cross-linguistic research shows that, generally speaking, every culture has a folk model of a person consisting of visible and invisible (psychological) aspects. While there is agreement that the visible part of the person refers to the body, there is considerable variation in how different cultures think about the invisible (psychological) part. In the West, and, specifically, in the English-speaking West, the psychological aspect of personhood is closely related to the concept of “the mind” and the modern view of cognition.But, how universal is this conception? How do speakers of other languages think about the psychological aspect of personhood?
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Art and the Limits of Neuroscience
Alva Noë on what neuroaesthetics—a field that studies art through the insights of neuroscience—can never tell us about art:
What is art? What does art reveal about human nature? The trend these days is to approach such questions in the key of neuroscience. “Neuroaesthetics” is a term that has been coined to refer to the project of studying art using the methods of neuroscience. It would be fair to say that neuroaesthetics has become a hot field. It is not unusual for leading scientists and distinguished theorists of art to collaborate on papers that find their way into top scientific journals. … … Neuroaesthetics, like the neuroscience of consciousness itself, is still in its infancy. Is there any reason to doubt that progress will be made? Is there any principled reason to be skeptical that there can be a valuable study of art making use of the methods and tools of neuroscience? I think the answer to these questions must be yes, but not because there is no value in bringing art and empirical science into contact, and not because art does not reflect our human biology.
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How Doctors Die
This thought-provoking article by Ken Murray, MD, asks: “How has it come to this—that doctors administer so much care that they wouldn’t want for themselves? The simple, or not-so-simple, answer is this: patients, doctors, and the system.”
Years ago, Charlie, a highly respected orthopedist and a mentor of mine, found a lump in his stomach. He had a surgeon explore the area, and the diagnosis was pancreatic cancer. This surgeon was one of the best in the country. He had even invented a new procedure for this exact cancer that could triple a patient’s five-year-survival odds—from 5 percent to 15 percent—albeit with a poor quality of life. Charlie was uninterested. He went home the next day, closed his practice, and never set foot in a hospital again. He focused on spending time with family and feeling as good as possible. Several months later, he died at home. He got no chemotherapy, radiation, or surgical treatment. Medicare didn’t spend much on him.It’s not a frequent topic of discussion, but doctors die, too. And they don’t die like the rest of us. What’s unusual about them is not how much treatment they get compared to most Americans, but how little. For all the time they spend fending off the deaths of others, they tend to be fairly serene when faced with death themselves. They know exactly what is going to happen, they know the choices, and they generally have access to any sort of medical care they could want. But they go gently. Of course, doctors don’t want to die; they want to live. But they know enough about modern medicine to know its limits. And they know enough about death to know what all people fear most: dying in pain, and dying alone.
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Curiosity for Mars
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Our Animals, Ourselves
A very interesting piece by my friend Justin E. H. Smith on our shared history with animals and how it has changed over time.
… Our adult humanity consists in cutting off ties of community with animals, ceasing, as Lévi-Strauss put it, to think with them. When on occasion adults begin again to think about animals, if not with them, it is to assess whether animals deserve the status of rights-bearers. Animal rights, should there be such things, are now thought to flow from neurophysiological features and behavioral aptitudes: recognizing oneself in the mirror, running through mazes, stacking blocks to reach a banana.But what is forgotten here is that the animals are being tested for re-admission to a community from which they were previously expelled, and not because they were judged to lack the minimum requirements for the granting of rights. They were expelled because they are hairy brutes, and we learned to be ashamed of thinking of them as our kin. This shame only increased when Darwin confirmed our kinship, thus telling us something Paleolithic hunters already knew full well. Morality doubled up its effort to preserve a distinction that seemed to be slipping away. Since the 19th century, science has colluded with morality, always allowing some trivial marker of human uniqueness or other to function as a token for entry into the privileged moral universe of human beings. “They don’t have syntax, so we can eat them,” is how Richard Sorabji brilliantly reduces this collusion to absurdity.
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The Minds of Machines
In Philosophy Now‘s special issue on consciousness, I explore “the complexity of consciousness and its implications for artificial intelligence.”
As a graduate student of computer engineering in the early 90s, I recall impassioned late night debates on whether machines can ever be intelligent – meaning, possessing the cognition, common sense, and problem-solving skills of ordinary humans. Scientists and bearded philosophers spoke of ‘humanoid robots’. Neural network research was hot, and one of my professors was a star in the field. A breakthrough seemed inevitable and imminent. Still, I felt certain that Artificial Intelligence (AI) was a doomed enterprise.I argued out of intuition, from a sense of the immersive nature of our life: how much we subconsciously acquire and call upon to get through life; how we arrive at meaning and significance not in isolation but through embodied living, and how contextual, fluid, and intertwined this was with our moods, desires, experiences, selective memory, physical body, and so on. How can we program all this into a machine and have it pass the unrestricted Turing test? How could a machine that did not care about its existence as humans do, ever behave as humans do? In hindsight, it seems fitting that I was then also drawn to Dostoevsky, Camus, and Kierkegaard.
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Facebook vs. Google
An interesting account of the high-stakes rivalry between Facebook and Google for the future of the web:
Although Larry Page, Google’s co-founder and its CEO since April, was born just 11 years before Mark Zuckerberg, his counterpart at Facebook, the two belong to different Internet generations with different worldviews. In Page’s web, everything starts with a search. You search for news or for a pair of shoes or to keep up with your favorite celebrity. If you want to learn about a medical condition or decide which television to buy, you search. In that world, Google’s algorithms, honed over more than a decade, respond almost perfectly. But in recent years the web has tilted gradually, and perhaps inexorably, toward Zuckerberg’s world. There, rather than search for a news article, you wait for your friends to tell you what to read. They tell you what movies they enjoyed, what brands they like, and where to eat sushi.
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The State of Solar Energy
An encouraging report on the current state and outlook for the solar energy industry. “The cost of solar panels has dropped significantly. Thanks to that and to new financing, the rooftop solar business is going gangbusters.” Listen to the audio report, or read the transcript.
Recent reports of solar companies going bankrupt and stories about alleged federal loan scandals have cast long shadows on the entire solar industry. But the sun is far from setting on photovoltaics. In fact, in 2010 – solar panels that could generate 17 gigawatts of energy – that’s equal to about 17 nuclear power plants – were sold worldwide. And this year, the US industry expects to double its production, and companies are growing fast to meet the demand for roof top panels. Living On Earth’s Ingrid Lobet reports. -
Battling Bad Science
“Every day there are news reports of new health advice, but how can you know if they’re right? Doctor and epidemiologist Ben Goldacre shows us, at high speed, the ways evidence can be distorted, from the blindingly obvious nutrition claims to the very subtle tricks of the pharmaceutical industry.” If you like this, check out another related performance by Goldacre from last year.
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Google Effects on Memory
Excerpts from a new study, “Google Effects on Memory: Cognitive Consequences of Having Information at Our Fingertips” (via C&C):
The advent of the Internet, with sophisticated algorithmic search engines, has made accessing information as easy as lifting a finger. No longer do we have to make costly efforts to find the things we want. We can “Google” the old classmate, find articles online, or look up the actor who was on the tip of our tongue. The results of four studies suggest that when faced with difficult questions, people are primed to think about computers and that when people expect to have future access to information, they have lower rates of recall of the information itself and enhanced recall instead for where to access it. The Internet has become a primary form of external or transactive memory, where information is stored collectively outside ourselves. … These results suggest that processes of human memory are adapting to the advent of new computing and communication technology. Just as we learn through transactive memory who knows what in our families and offices, we are learning what the computer “knows” and when we should attend to where we have stored information in our computer-based memories. We are becoming symbiotic with our computer tools (8), growing into interconnected systems that remember less by knowing information than by knowing where the information can be found. This gives us the advantage of access to a vast range of information—although the disadvantages of being constantly “wired” are still being debated (9). It may be no more that nostalgia at this point, however, to wish we were less dependent on our gadgets. We have become dependent on them to the same degree we are dependent on all the knowledge we gain from our friends and coworkers—and lose if they are out of touch. The experience of losing our Internet connection becomes more and more like losing a friend. We must remain plugged in to know what Google knows.
Category: Science -
Jonathan Haidt on Morality
Another smart lecture by psychologist Jonathan Haidt whose “research indicates that morality is a social construction which has evolved out of raw materials provided by five (or more) innate “psychological” foundations: Harm, Fairness, Ingroup, Authority, and Purity. Highly educated liberals generally rely upon and endorse only the first two foundations, whereas people who are more conservative, more religious, or of lower social class usually rely upon and endorse all five foundations.” (part 1 below; part 2; Q&A 1; Q&A 2)
