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March 21, 2017

Plato, St. Ambrose, Marcuse: heralds for our age

Filed under: Culture,philosophy,Tolerance — Razib Khan @ 9:23 pm

It galls me to agree with the proposition that Western philosophy consists of footnotes to Plato, but it is at least fair to admit that Western intellectual thought exists in dialogue with him and his thinking. But the spare and arrogant idealism which Plato and his followers promoted is not entirely alien to the landscape of human cognition. It is not purely invention, but has a basis in intuition. A tendency to abstract, and confuse the abstract with reality, seems hard-wired into our mental architecture. As Paul Bloom would say, we are natural born essentialists (and dualists).

One implication of Platonic idealism seems to be that striving for the perfect form of truth bleeds over into a conceited belief that one’s understanding of the truth is Truth itself. I do not believe that Christianity is necessarily understood only in the light of the mental universe which Plato and his detractors created, but it is hard to deny the Platonic tincture of much of early Christian thought as it diffused throughout the ancient world and began to make converts among the elites. Christian thinking may hinge upon divine revelation, but its theistic illuminations gained rigor and steel via philosophical certitudes.

St. Ambrose was a man of such steel. A scion of the West Roman elite he matured in an era when the heights of society were still religiously pluralistic, with the most eminent and ancient families and men of renown, such as Quintus Aurelius Symmachus, exhibiting clear pagan sympathies. Or perhaps they might characterize it as a fondness for the customary gods of Rome.

In 382 there was a dispute in Rome over the removal of the Altar of Victory from the Roman Senate. Symmachus entered into the record an apologia for the restoration of the statue. He makes a plea:

We ask, then, for peace for the gods of our fathers and of our country. It is just that all worship should be considered as one. We look on the same stars, the sky is common, the same world surrounds us. What difference does it make by what pains each seeks the truth? We cannot attain to so great a secret by one road; but this discussion is rather for persons at ease, we offer now prayers, not conflict.

St. Ambrose, whose faith was on the march, and the future, did not mince words:

But if you deny Christ to be God, because you believe not that He died (for you are ignorant that death was of the body not of the Godhead, which has brought it to pass that now no one of those who believe dies), what is more thoughtless than you who honour with insult, and disparage with honour, for you consider a piece of wood to be your god. O worship full of insult! You believe not that Christ could die, O perversity founded on respect!

Symmachus asked for tolerance, because that was all his kind could ask for. St. Ambrose and the other militants saw no gain to such tolerance, because they had truth before them, and denying the truth was an insult to all. Tolerance of idolatry and superstition was no tolerance.

In 1965 Herbert Marcuse wrote Repressive Tolerance. He begins:

THIS essay examines the idea of tolerance in our advanced industrial society. The conclusion reached is that the realization of the objective of tolerance would call for intolerance toward prevailing policies, attitudes, opinions, and the extension of tolerance to policies, attitudes, and opinions which are outlawed or suppressed. In other words, today tolerance appears again as what it was in its origins, at the beginning of the modern period–a partisan goal, a subversive liberating notion and practice. Conversely, what is proclaimed and practiced as tolerance today, is in many of its most effective manifestations serving the cause of oppression.

These ideas find relevance today, where one descendent of Critical Theory has transformed dissent and offense into violence, and so justifies suppression of disagreeable thought. St. Ambrose would have used different logic because of a differing metaphysical basis, but I believe the psychological impulses are not so different. Tolerance of error is problematic when that error leads to injustice, impiety, and diminishes the “good society,” however it is imagined.

There are those who believe that they know the Truth. Plato and his acolytes had their conceit as philosopher kings. St. Ambrose and his fellow believers had divine revelation, and were seeking to bring all those in the darkness who disagreed with their views to the light. Following St. Augustine the pre-modern Catholic Church asserted that “error has no rights”.

The latest flare up of this sentiment among particular cultural elites, sometimes termed the “regressive Left” (somewhat of a contradiction clearly), is but latest incarnation of this viewpoint. They believe that the time for tolerance is over, as tolerance gives sanction and space to error and impiety (these are called “oppression” now). The liberal “end of history” seems to be evading us, the old battles reoccur with a regularity that hints at an eternal recurrence.  Every few generations the battle with Tiamat must be joined, as monsters issue from the darkness of our cultural Id.

As a descriptive matter it strikes me that some have now denied that words as a tool of discussion, dialogue, and dispute, have utility to discover truth. Those who object with words are engaged in a likely futile exercise, just as pleas for the tolerance of the old religion were futile. A new world was upon them, they simply lacked our hindsight to see the dawning of the age of the One True God. Perhaps in a different universe history took a different course. In those universes I doubt the old gods survived through persuading the believers of the new Lord with words.

The age of words is over. If words become violence, then violence becomes the tool of ultimate persuasion, compulsion. If truth is all about power, then power is all there is. In a Whiggish telling we as a species came out of the blood and darkness, the struggle for power and zero-sum contests for collective domination. But perhaps we are destined to become what we were, creatures forged in blood and power, unable to resist the temptations of coercion and compulsion.

November 21, 2012

The crowds knows better than you?

Filed under: philosophy — Razib Khan @ 5:23 am

Justin Wolfers & Betsy Stevenson have a piece up in Bloomberg, Crowds Are This Election’s Real Winners. In The Signal and the Noise Nate Silver has a chapter on Wolfers’ belief that prediction markets are superior to the sort of quantitative analysis that is his stock & trade. The belief isn’t based on an intuition. One of Wolfers’ graduate students produced a paper showing that Intrade was actually better than FiveThirtyEight in 2008. Silver demurs in the chapter because he suggests that the model which Wolfers and his student lay out in the paper had some modifications which allowed for one to judge Intrade’s performance superior. I’m willing to accept Silver’s assertion here because I’ve seen enough economic models which are modulated just enough to produce elegant and clean results. That being said, the general tone of the chapter is such that in his heart Silver seems to agree that Wolfers is fundamentally correct in the long term. Prediction markets, when done right, are more powerful than any analytic an individual could cook up.

All that being said, the economist’ faith on the power of mass market signals (“the crowd”) often strikes natural scientists as peculiar. When talking about elections it does seem that the “crowds” are going to be superior to the judgement of individuals or powerful quantitative models (after all, elections are about crowds!).  But there is a long history of the crowd being wrong in the very specific areas of natural science which rely on contingent and formal fameworks to make non-obvious predictions on somewhat complex systems. But that’s because in some areas of the natural sciences humans have a systematic bias due to intuitive psychological tendencies. Aristotle’s model was just more intuitively plausible than those of his skeptics’ for a few thousand years. And quantum theory would never win a crowd-vote. One Bohr is worth a thousand other humans. I think this long history of the worthlessness of mass market intuition across large swaths of the territory of science is why many scientists find technocratic solutions very appealing. The formal reflections of the elect has worked miracles in physics, so why not “social physics” (i.e., economics)?

Obviously there’s a difference between the expertise of a nuclear physicist, an economist, a financial entertainer, and an astrologer. When a physicist speaks about physics, you listen, for they are describing the world. When an economist speaks about economics, you listen, because they are reflecting honestly what economists think about the world. When a financial entertainer speaks, you listen for laughs, because they are mixing substance and style to entertain you. When an astrologer speaks you are a fool to listen, because they are using the artifice of science to sell you nonsense.

Epistemology is hard. There is no “Swiss Army knife” which allows one to know how to know. In some circumstances the utilization of statistics is a matter of style, to firm up a flimsy supposition with the rigorous garb of quantity. The delusion of false precision. But in other domains statistical knowledge is highly informative. And there are areas where one can usefully deploy deterministic models.

The problem that crops up is when one swims in one lagoon of the intellectual pool where a particular suite of tools is useful, it is easy to forget that the utility of that kit may be conditional on the characteristics of that domain. Many physical scientists seem to have a tendency of assuming that there can be a simple and elegant technocratic solution (I believe that this is one reason engineers are attracted to religious fundamentalism). Meanwhile, I have observed before that biologists are often totally wedded to the Malthusian model for humans, when that model has not been fruitful for nearly a century. Biologists may be correct over the long term, but as an economist once observed, over the long term we’re all dead. Finally, economists can see markets everywhere, when sometimes it is not supply & demand, but ecology which is speaking. In A Farewell to Alms I note that Greg Clark argued that the emergence of lactase persistence was a sign of the longstanding high per capita income of Northern Europe, because Northern Europeans could afford to consume large quantities of milk. But of course there are ecological parameters which are relevant for how rational it is to engage in dairy-culture.

In the end, the only solution I offer is trial & error iteration. There is no market, no decision tree, which can guide us here. What works, works. What does not, does not. We muddle on.

November 20, 2012

Being pro-life and pre-implantation diagnosis

Filed under: philosophy — Razib Khan @ 12:58 am

The recent controversy over Peter Singer and Fordhman got me thinking about the logical implications of a consistent ethos. Singer certainly has a consistent ethos. Or at least he tries to work out the logical implications of his axioms, no matter where that goes. I don’t agree with Peter Singer’s utilitarianism because I am skeptical of his extreme ethical reductionism, but it’s clarifying at least.

But that got me to thinking about the implications of being pro-life in the 21st century, as biotechnology becomes more and more a part of our lives. From what I gather the standard pro-life position is that life begins at conception, where you have the potential for a human being. One aspect of this has always disturbed me: it is likely that more than 50% of conceptions miscarry, without anyone being the wiser. Most karyotype abnormalities, for example, miscarry. If these are human lives, does this mean that the majority of humans die even before they are born? How can we fix this tragedy?

In the pre-modern age there wouldn’t be a tragedy to fix. Saving these humans would be beyond our power. But today there are ways we may reduce the harm. First, one could fertilize a range of eggs, and then screen them for genetic abnormalities. Only the ones who pass a quality control threshold would be implanted, to minimize miscarriage risk.* The others could be put in ‘stasis,’ until the point where medical technology has advanced to the point that ailments can be fixed by genetic re-engineering at the zygotic stage.

And that is my attempt to think like a pro-life Peter Singer.

* In the future artificial wombs are definitely the way to go, as the developing fetus could be closely monitored.

September 24, 2012

The First Men and the Last Men

Filed under: philosophy — Razib Khan @ 10:59 pm

In the comments below there is a discussion about whether personhood is a continuous or categorical trait. I lean toward the former proposition as a matter of fact, but let’s entertain the second. What if personhood, and in particular consciousness and moral agency, emerged repeatedly over the past two million years in singular individuals? A model I propose is that the reason that ‘behavioral modernity’ exhibited such a long lag behind ‘anatomical modernity’ is that the first conscious human kept killing themselves. After all, imagine that you come to awareness and all your peers are…well, ‘dirty apes.’ You are literally the sane man in the asylum. This is similar the idea proposed, reasonably enough, that a demographic ‘critical mass’ was required for cultural evolution to truly enter into ‘lift-off.’ In any case, perhaps ~50,000 year ago a psychopath was born who could live with the knowledge that their days were to be spent copulating with and eliminating with animals. Animals whom said psychopath could congenially manipulate to increase their own fitness. No sensitive soul, he.

Ultimately obviously my hypothesis is far more science fiction than serious model. But it does get to the heart of something critical: the essence of ...

August 12, 2012

On my perceived disagreements with Sam Harris

Filed under: philosophy,Sam Harris — Razib Khan @ 12:25 pm

A reader below asked me to exposit in more detail what I only alluded to in my post, The scourging of Sam Harris, when it came to substantive disagreements. The reason I did not elaborate much in the post is because Sam Harris’ original contribution had more to do with the deficits of interacting on the internet, and being routinely mischaracterized and having your reputation smeared. In this area I’m in close agreement with Harris, as I’ve experienced many of the same things. I suspect part of it is that like Harris, and unlike many internet commentators, I don’t really exist within a relatively tidy social-ideological bubble. My readership spans the ideological gamut, and though I’m personally on the Right, I don’t have much of a problem posting material which those on the Left may find congenial to their self-image (which naturally results in the tendency for random conservatives to term me a “liberal blogger,” totally unaware that I’m often a token conservative in science and secular circles). I’m not a contrarian, as much as I don’t really care too much about politics. People may remember Richard Feynman 1,000 years from now. They will ...

The perils of “reason”

Filed under: philosophy — Razib Khan @ 12:38 am

In my post below in regards to Sam Harris’ recent interactions on the web I reasserted by suspicion of reason. This naturally elicited curiosity, or hostility, from some. I’ve talked about this before, but the illustration to the left gets at my primary issue. When individuals are reasoning alone they often have a high degree of uncertainty as to their conclusions. But when individuals are reasoning together they seem to converge very rapidly and with great confidence upon a particular position. What’s going on here? In the second case it isn’t reason at all, but our natural human predisposition toward group conformity. There’s a huge psychological literature on this, so I won’t belabor the point. When people brandish “reason” and “rationality” explicitly I’m somewhat skeptical. If rational conclusions are so plain and self-evident why are we even asserting the primacy of reason? If something really is so clearly reasonable you usually don’t go around trumpeting how reasonable it is.

Another pitfall of reason is that it lulls use into the delusion that we have a transparent understanding of our own motivations and logic, as well as the motivation and ...

May 24, 2012

The utility and reality of species

Filed under: philosophy,Species concepts — Razib Khan @ 9:16 am

Of all the taxonomic ranks species is the most clear, distinct, and concrete. More practically, it is the level which most naturally falls out of the patterns of life’s tree. Or does it? If the term “species concept” does not ring a bell, please see this entry. If it does, how do you define species in a non-arbitrary manner?

February 13, 2012

Metaphysics Matters

Filed under: philosophy,Politics,Religion,Top Posts — Sean Carroll @ 8:38 am

Chattering classes here in the U.S. have recently been absorbed in discussions that dance around, but never quite address, a question that cuts to the heart of how we think about the basic architecture of reality: are human beings purely material, or something more?

The first skirmish broke out when a major breast-cancer charity, Susan Komen for the Cure (the folks responsible for the ubiquitous pink ribbons), decided to cut their grants to Planned Parenthood, a decision they quickly reversed after facing an enormous public backlash. Planned Parenthood provides a wide variety of women’s health services, including birth control and screening for breast cancer, but is widely associated with abortion services. The Komen leaders offered numerous (mutually contradictory) reasons for their original action, but there is no doubt that their true motive was to end support to a major abortion provider, even if their grants weren’t being used to fund abortions.

Abortion, of course, is a perennial political hot potato, but the other recent kerfuffle focuses on a seemingly less contentious issue: birth control. Catholics, who officially are opposed to birth control of any sort, objected to rules promulgated by the Obama administration, under which birth control would have to be covered by employer-sponsored insurance plans. The original objection seemed to be that Catholic hospitals and other Church-sponsored institutions would essentially be paying for something they though was immoral, in response to which a work-around compromise was quickly adopted. This didn’t satisfy everyone (anyone?), however, and now the ground has shifted to an argument that no individual Catholic employer should be forced to pay for birth-control insurance, whether or not the organization is sponsored by the Church. This position has been staked out by the US Conference of Catholic Bishops, and underlies a new bill proposed by Florida Senator Mark Rubio.

Topics like this are never simple, but they can be especially challenging for a secular democracy. On the one hand, our society is based on religious pluralism. We have freedom of conscience, and try to formulate our laws in such a way that everyone’s rights are protected. But on the other hand, people have incompatible beliefs about fundamental issues. Such beliefs are often of central importance, and the duct tape of political liberalism isn’t always sufficient to hold things together.

When it comes to abortion and birth control, there’s no question that down-and-dirty political and social aspects are front and center. Different political parties want to score points with their constituencies by standing firm in the current culture wars. And there’s also no question that restricting access to contraception and abortion is driven in part (we can argue about how big that part is) by a desire to control women’s sexuality.

But there is also a serious question about human life and the nature of reality. What actually happens when that sperm and ovum get together to make a zygote? Is it just one step of many in an enormously complex chemical reaction that ultimately gives rise to a new person, who is at heart just a complex chemical reaction him-or-herself? Or is it the moment when an immaterial soul, distinct from the material body, first comes into being? Question like this matter — but as a society we hardly ever discuss them, at least not in any serious and open way. As a result, different sides talk past each other, trying to squeeze metaphysical stances into political boxes.

If it were really true that “a human life” was defined by the association of an immaterial soul with a physical body, and that association began at the moment of conception, then making abortion illegal would be perfectly sensible. It would be murder, pure and simple. (Very few people are actually consistent here, believing that mothers who have abortions should be treated like someone who has committed murder; but there are some.) But this view of reality is not true.

Naturalism, which describes human beings in the same physical terms as other objects in the universe, doesn’t actually provide a cut-and-dried answer to the abortion question, because it doesn’t draw a bright line between “a separate living person” and “a collection of cells.” But it provides an utterly different context for addressing the question. Naturalists are generally against murder, but it’s because they recognize certain collections of atoms as “people,” and endow those people with rights and privileges as part of the structure of society. It all comes from distinctions that we human beings ultimately invent, not ones that are handed down from a higher authority. Consequently, the appropriate rules are less clear. A naturalist wants to know whether the purported person can think, feel, react, and so on. They also will balance the interests of the fetus, whatever they may be, against the interests of the mother, who is unquestionably a living and functioning person. It’s perfectly natural that those interests will seem more important than those of a fetus that isn’t even viable outside the womb.

Most everyone, religious believers and naturalists alike, agrees that killing innocent one-year-old children is morally wrong. Consequently, we can happily live together in a society where that kind of action is illegal. But our beliefs about aborting one-month-old embryos are understandably very different. The disagreements about these issues aren’t simply political, they run much deeper than that.

It matters how people think about the world. Political liberalism is a good system, but it only works insofar as the citizens can agree on a core set of values and push cultural/religious differences to the periphery. Naturalism doesn’t answer all the value-oriented questions we might have; it simply provides a sensible framework in which they can be profitably discussed. But between naturalists and non-naturalists, profitable discussion is much more difficult. Which is why we naturalists have to keep pressing, making the best case we can, trying to convince as many people as we can reach that there is only one realm of existence, governed by unbreakable laws, and that we are part of it.

February 7, 2012

How To Think About Quantum Field Theory

Filed under: philosophy,science,Top Posts — Sean Carroll @ 3:15 pm

I continue to believe that “quantum field theory” is a concept that we physicists don’t do nearly enough to explain to a wider audience. And I’m not going to do it here! But I will link to other people thinking about how to think about quantum field theory.

Over on the Google+, I linked to an informal essay by John Norton, in which he recounts the activities of a workshop on QFT at the Center for the Philosophy of Science at the University of Pittsburgh last October. In Norton’s telling, the important conceptual divide was between those who want to study “axiomatic” QFT on the one hand, and those who want to study “heuristic” QFT on the other. Axiomatic QFT is an attempt to make everything absolutely perfectly mathematically rigorous. It is severely handicapped by the fact that it is nearly impossible to get results in QFT that are both interesting and rigorous. Heuristic QFT, on the other hand, is what the vast majority of working field theorists actually do — putting aside delicate questions of whether series converge and integrals are well defined, and instead leaping forward and attempting to match predictions to the data. Philosophers like things to be well-defined, so it’s not surprising that many of them are sympathetic to the axiomatic QFT program, tangible results be damned.

The question of whether or not the interesting parts of QFT can be made rigorous is a good one, but not one that keeps many physicists awake at night. All of the difficulty in making QFT rigorous can be traced to what happens at very short distances and very high energies. And that’s certainly important to understand. But the great insight of Ken Wilson and the effective field theory approach is that, as far as particle physics is concerned, it just doesn’t matter. Many different things can happen at high energies, and we can still get the same low-energy physics at the end of the day. So putting great intellectual effort into “doing things right” at high energies might be misplaced, at least until we actually have some data about what is going on there.

Something like that attitude is defended here by our former guest blogger David Wallace. (Hat tip to Cliff Harvey on G+.) Not the best video quality, but here is David trying to convince his philosophy colleagues to concentrate on “Lagrangian QFT,” which is essentially what Norton called “heuristic QFT,” rather than axiomatic QFT. His reasoning very much follows the Wilsonian effective field theory approach.

The concluding quote says it all:

LQFT is the most successful, precise scientific theory in human history. Insofar as philosophy of physics is about drawing conclusions about the world from our best physical theories, LQFT is the place to look.

June 7, 2011

Lives of Confucius: Civilization’s Greatest Sage Through the Ages

Link to review: Lives of Confucius: Civilization’s Greatest Sage Through the Ages.

The Problem of Democracy

Filed under: Alain de Benoist,philosophy,Politics,The Problem of Democracy — Razib Khan @ 3:04 pm

Link to review: The Problem of Democracy.

The Problem of Democracy

Filed under: Alain de Benoist,philosophy,Politics,The Problem of Democracy — Razib Khan @ 3:04 pm

Link to review: The Problem of Democracy.

May 19, 2011

Fixing science, in part

Filed under: philosophy,Psychology,science,Social Science — Razib Khan @ 1:32 pm

The GiveWell Blog has some suggestions for “Suggestions for the Social Sciences”. Here is the big one:

Our single biggest concern when examining research is publication bias, broadly construed. We wonder both (a) how many studies are done, but never published because people don’t find the results interesting or in line with what they had hoped; (b) for a given paper, how many different interpretations of the data were assembled before picking the ones that make it into the final version.

The best antidote we can think of is pre-registration of studies along the lines ofClinicalTrials.gov, a service of the U.S. National Institutes of Health. On that site, medical researchers announce their questions, hypotheses, and plans for collecting and analyzing data, and these are published before the data is collected and analyzed. If the results come out differently from what the researchers hope for, there’s then no way to hide this from a motivated investigator.

As the example of the NIH illustrates this is not just a social science problem, it is rife in any science which utilizes statistics. Statistical methods have become metrics to attain by any means necessary, when in reality they should be guidelines to get a ...

May 13, 2011

Humanity invented in 1800 by the French

Filed under: Culture,History,Ideas,philosophy — Razib Khan @ 11:56 pm

A comment from earlier this week struck a nerve with me. I’ll repost it in totality first:

I find it interesting that Fox Keller seems to be assuming that human interest in “nature” began only in the 19th century. Rather, the concept of mankind’s nature has been a topic of much interest since at least the induction of philosophical inquiry by the Greeks, and remains a topic of interest in philosophical circles in the philosophy of man. While the ancient Greeks certainly had no idea about DNA or genes, they were able to examine man’s behavior and physical characteristics and to try to determine whether or not men were born a certain way (nature) or could learn to alter some traits by choice (a great example of such an inquiry is in the Nicomachaen Ethics by Aristotle, regarding the definition and inculcation of virtue). The current debate about nature vs. nurture in a specifically genetic mode is merely a more specialized version of the exact same concept…how to differentiate what parts of “man” are immutable and what parts seem to respond to differing environments (whether internally or externally imposed). That might explain why Fox Keller is so confused about why ...

April 30, 2011

The loss of sacred belief?

Filed under: Culture,philosophy — Razib Khan @ 11:32 am

Over at the Less Wrong blog there is a post, So You’ve Changed Your Mind. This portion caught my attention:

So you’ve changed your mind. Given up your sacred belief, the one that defined so much of who you are for so long.

You are probably feeling pretty scared right now.

I reflected and realized that the various issues where I’ve held relatively strong opinions and then changed my mind were generally cases where I relied on received wisdom, looked more closely, and felt that there was some misrepresentation among the orthodox gatekeepers of wisdom. But there’s one “big” issue that I guess I have changed my mind: I used to view all utility calculations on the scale of the individual, and accepted that all entities above or below the scale of the individual were useful only as a means toward individual well being. I probably wouldn’t defend this position anymore, though I think it has a logical coherency and may still be viable in some places and times. I’m not a “communitarian” or anything like that, rather, I have an impulse to just disavow these sorts of formal constructions of how best to attain and maintain human happiness in a time and ...

April 22, 2011

A problem of knowledge

Filed under: Immanuel Kant,philosophy — Razib Khan @ 12:37 am

A boring man

Immanuel Kant is famous. You’ve probably heard of him. And you know some of his ideas, such as the categorical imperative, or have at some point started the Critique of Pure Reason (if you’re like me, you never finish it). But what do you know about his biography? I may not be able to complete a Critique of Pure Reason, but I did read Manfred Kuehn’s Kant: A Biography in the winter of 2002. From that I learned one surprising fact: Immanuel Kant in his personal beliefs was not an orthodox Christian, if he had religious sentiment at all. This surprised me because I had read elsewhere in passing that Kant was a Pietistic Lutheran. Ultimately whether Kant was religious or not was not a major issue for me, but I did update my personal factual database.

Fast forward six years to 2008. I was at a party kicking back with some philosophers (as in, people completing their doctorates), and it came up that one of them was doing their dissertation on some of Kant’s ideas. This individual happened to ...

February 8, 2011

Species, not arbitrary, but not clear & distinct

Filed under: Biology,philosophy,species,Species concepts — Razib Khan @ 1:48 am

John Hawks and Jerry Coyne are mooting the ‘species concepts’ debate, with particular focus on recent human origins (specifically, the relationship of modern humans to Neandertals and Denisovans). Coyne, who coauthored the book Speciation and remains preoccupied with the issue in his academic work, knows of what he speaks. And of course he wouldn’t think that the discussion of species, how to delineate them, and what they are, is a sterile exercise. He has chosen to allocate a significant portion of his life to the topic. I think very few would disagree with Coyne when he contends that “Species are not arbitrary divisions of an organic continuum.” If there is one taxonomic category which has a concrete basis in reality, that would seem to be species. But, I would observe that I’m not sure that species are necessarily so clear and distinct. After all, we know that there is here and there, but where does here end, and there begin?

I’m of a reminded of the classic Zeno’s paradox:

In the paradox of Achilles and the Tortoise, Achilles is in a footrace with the tortoise. Achilles allows the tortoise a head start of 100 metres. If ...

February 3, 2011

Descartes’ Baby: How The Science Of Child Development Explains What Makes Us Human

Link to review: Inducing Disgust

The Robot’s Rebellion: Finding Meaning in the Age of Darwin

Link to review: The God of Reason

October 30, 2010

The possible impossibility of truth and the importance of incorrectness

Filed under: Knowledge,philosophy — Razib Khan @ 11:54 am

In the post below on the genetic history of India, or earlier when discussing the revisions of European prehistory, one general trend that is cropping up is that the future seems more complex and muddled than we’d presumed. This introduces the real possibility that in the foreseeable future we won’t be able to opine with any credibility about the nature of the pre-literate past, because our tools are good enough to falsify simple models, but not powerful enough to distinguish between the set of more complex models. In contrast, ten years ago when it came to the expansion of farming in Europe on offer we had simple and clear dichotomies; demic diffusion of Anatolian farmers vs. cultural diffusion of farming techniques along trade routes. Ten years ago when it came to India we are mooting the possibilities between elite transmission of Indo-European language, versus demographically significant migrations into South Asia bringing the Indo-Aryan dialects.

I think that such models are wrong, because there are major parameters left out of the picture. Now in the world we see around us the possibility of really achieving plausible consensus around a positive truth has decreased significantly, because the causal possibilities are proliferating. A model then becomes synonymous with a story. But to admit that it may be that we can’t know is still a greater improvement on the delusion that we did know.

These are general observations. R. A. Fisher’s attempt to transform evolutionary biology into a deterministic set of laws as powerful as those of thermodynamics seems to have failed; at least beyond a trivial level. The importance of history and contingency, of specific detail, muddles the general insight which we can derive in evolutionary processes. But if there is no general insight to derive then we shouldn’t be deriving it, should we? False confidence in knowledge we think we have is a far greater sin than the admission of ignorance.

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