Uncommon Descent Serving The Intelligent Design Community

Is nature really a struggle in which natural selection is the key factor?

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British physicist David Tyler comments:

In a perceptive essay, Daniel Todes focuses attention on the reactions of Russian biologists to Darwin’s writings. Many of these naturalists “were evolutionists before 1859”, so they did not dissent from common ancestry. However, their experiences of the living world were quite different from Darwin and Wallace, who drew their inspiration from densely populated tropical forests and related habitats. They witnessed a struggle for existence that matched the description Thomas Malthus had given of human communities. Using the same logic, Darwin and Wallace were stimulated to think about winners and losers in populations of animals and plants. The Russian scientists lived in a different world.

[They] “investigated a vast under-populated continental plain. For them, nature was not an “entangled bank” – the image Darwin took from the Brazilian jungle. It was a largely empty Siberian expanse in which overpopulation was rare and only the struggle of organisms against a harsh environment was dramatic.”

The Russian response to living in a harsh environment was to develop “the language of communalism – stressing not individual initiative and struggle, but the importance of cooperation within social groups and the virtues of social harmony.” The analysis of Malthus did not match the biological communities in their part of the world, so Darwin’s metaphor of the “struggle for existence” was not, in their view, well grounded.

That’s always what bothered me. I see competition in nature, to be sure, but also lots of cooperation. Otherwise, life could not survive against non-life. There is much more non-life than life. That much should be obvious. For more, go here.

Tyler also points out that the modern synthesis that is supposed to save Darwinism is gone.

Earlier this year, Eugene Koonin published a masterly analysis of the impact of genomics on evolutionary thinking. This proved to be too meaty a study for a concise blog, and my initial draft was abandoned. Happily, a shorter overview has now been published, and this abstracts salient points from the research paper. Koonin notes that the 1959 Origin centennial was “marked by the consolidation of the modern synthesis” but subsequent years have witnessed great changes which have undermined its credibility. “The edifice of the modern synthesis has crumbled, apparently, beyond repair.”

Koonin uses the metaphor of “the landscape of evolutionary biology”. There are three distinct revolutions have occurred over the past half-century: the molecular, the microbiological and the genomic revolutions.

“[T]his year is the perfect time to ask some crucial questions: how has evolutionary biology changed in the 50 years since the hardening of the modern synthesis? Is it still a viable conceptual framework for evolutionary thinking and research?”

The molecular revolution culminated, says Koonin, in the neutral theory, which means that purifying selection is more common than positive selection. The microbiological revolution brought the world of prokaryotes into the domain of evolutionary biology, but it then became apparent that the concepts of Darwinism and the modern synthesis “applied only to multicellular organisms”. The genomic revolution revealed that the living world was “a far cry from the orderly, rather simple picture envisioned by Darwin and the creators of the modern synthesis”. In particular, it is now interpreted as an “extremely dynamic world where horizontal gene transfer (HGT) is not a rarity but the regular way of existence, and mobile genetic elements that are vehicles of HGT are ubiquitous”. “The discovery of pervasive HGT and the overall dynamics of the genetic universe destroys not only the tree of life as we knew it but also another central tenet of the modern synthesis inherited from Darwin, namely gradualism. In a world dominated by HGT, gene duplication, gene loss and such momentous events as endosymbiosis, the idea of evolution being driven primarily by infinitesimal heritable changes in the Darwinian tradition has become untenable.”

Koonin is serious in saying that all the concepts of the modern synthesis are in need of a fundamental overhaul. “Moreover, with pan-adaptationism gone forever, so is the notion of evolutionary progress that is undoubtedly central to traditional evolutionary thinking, even if this is not always made explicit. The summary of the state of affairs on the 150th anniversary of the Origin is somewhat shocking. In the postgenomic era, all major tenets of the modern synthesis have been, if not outright overturned, replaced by a new and incomparably more complex vision of the key aspects of evolution. So, not to mince words, the modern synthesis is gone.”

Koonin tentatively identifies two candidates to fill the vacuum left by the discarded modern synthesis. The first of these appears to emphasis the role of chance; the second appears to emphasise law. “The first is the population-genetic theory of the evolution of genomic architecture, according to which evolving complexity is a side product of non-adaptive evolutionary processes occurring in small populations where the constraints of purifying selection are weak. The second area with a potential for major unification could be the study of universal patterns of evolution such as the distribution of evolutionary rates of orthologous genes, which is nearly the same in organisms from bacteria to mammals or the equally universal anticorrelation between the rate of evolution and the expression level of a gene. The existence of these universals suggests that simple theory of the kind used in statistical physics might explain some crucial aspects of evolution.”

It is not difficult to predict that Koonin’s analysis will not be received quietly by the very vocal leaders of evolutionary biology. They are still entrenched in neoDarwinism and show no signs of conceding any ground to anyone.

Go here for more.

Actually, Koonin is just as likely to be ignored as not quietly received. The fantasy creation story of fashionable atheism is in many places, government policy. Its proponents often have tenure and get their pay every month. The only solution is eventual retirement parties, followed by a big revaluation – = what do we really know? How much is mere propaganda?

Comments
In comment #8 nullasalus wrote:
"You’re pointing out that ID proponents are out of date, but if that’s true, all it means is they’re fighting a battle they’ve already won, and simply don’t realize it."
Then how do you reconcile this with the following quote from Eugene Koonin (which David Tyler conveniently overlooked in his blogpost):
"There is no consistent tendency of evolution towards increased genomic complexity, and when complexity increases, this appears to be a nonadaptive consequence of evolution under weak purifying selection rather than an adaptation." [emphasis added]
So much for CSI, or any kind of "C". Seems to me that Tyler performed a rather classical quotemine on Dr. Koonin, selecting those bits of the abstract of his papers that supported a viewpoint that was exactly the opposite of the actual content of the articles. Here's what Dr. Koonin actually wrote:
Darwinian evolution in the light of genomics. Nucleic Acids Research, 37(4), 2009, pp. 1011-1034. ABSTRACT: Comparative genomics and systems biology offer unprecedented opportunities for testing central tenets of evolutionary biology formulated by Darwin in the Origin of Species in 1859 and expanded in the Modern Synthesis 100 years later. Evolutionary-genomic studies show that natural selection is only one of the forces that shape genome evolution and is not quantitatively dominant, whereas non-adaptive processes are much more prominent than previously suspected. Major contributions of horizontal gene transfer and diverse selfish genetic elements to genome evolution undermine the Tree of Life concept. An adequate depiction of evolution requires the more complex concept of a network or 'forest' of life. There is no consistent tendency of evolution towards increased genomic complexity, and when complexity increases, this appears to be a nonadaptive consequence of evolution under weak purifying selection rather than an adaptation. Several universals of genome evolution were discovered including the invariant distributions of evolutionary rates among orthologous genes from diverse genomes and of paralogous gene family sizes, and the negative correlation between gene expression level and sequence evolution rate. Simple, non-adaptive models of evolution explain some of these universals, suggesting that a new synthesis of evolutionary biology might become feasible in a not so remote future.[emphasis added]
In other words, the evolving evolutionary synthesis of the 21st century is de-emphasizing adaptation. But, since adaptation is the heart and soul of ID (which is all about how things become purposeful in evolution), then the new discoveries are cutting the heart and soul out of ID. ID, like its mirror image "the modern synthesis" has always been relentlessly pan-adaptationist. According to ID, even those things that evolutionary biologists assert do not have a purpose actually do, we're just ignorant of what those purposes might be. The Intelligent Designer ® does nothing by accident: "not a sparrow falls but that Thou art mindful of it". But the emerging picture of the genome (and the phenome for which it is at least partially responsible) is that, rather than being a coherent, homeostatic, apparently "rationally designed" entity, it is a frothing ocean of randomly varying nonsensical and furiously selfish genetic entities, none of which give a tinker's dam about the phenome. Indeed, rather than producing the exquisitely perfect adaptations of living organisms, it is becoming clear that natural selection may be important only as that process that prevents the accelerating disintegration of the genome in the face of increasing chaos. In other words, evolution isn't a steady climb toward greater and greater complexity nor a process designed to produce perfection. No, it's a process out of which adaptation and complexity arise almost as an afterthought in the "mind" of a universe bent wholly on self-annihilation. Looks like "biological quantum mechanics" to me...Allen_MacNeill
November 20, 2009
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Mr Nullasalus, Rather like how neo-darwinism’s death by criticism is now being shrugged off as of no interest to ID proponents. I think Mr Macneill's point was not that neo-Darwinism died by criticism, rather it was replaced by another material explanation even less familiar and less comforting than the survival of the fittest. We can understand an explanation in which good works are rewarded easily, because it matches the rough outline of our human experience. It is the same explanation of success we like to think is at work in a political democracy or freemarket capitalism, or the marketplace of ideas. However, easy analogy to human experience says more about how easy it will be to market an idea than how good it is an explanation. (po-mo science, yay!) But being the best possible finch doesn't make you more likely to be the founder of a new species of finch. Being a poor finch, and forced into a marginal territory, which is then cut off from the parent territory, or being forced to eat different foods, or being blown across the sea in a storm are examples of success by a shlemiel that finds the winning lottery ticket on the ground. While good things do happen to the poor heroes of our folk tales, they usually have virtues that outweigh their poverty. The subtext of the folk tale is that these virtues such as honesty, cleverness, trustworthiness, etc are being rewarded. The analogy to QM as an explanation is that Einstein was being profoundly human when he stated a preference for a fair game - dice rolled in public. Survival of the fittest was at least a fair game. Neutral drift and founder effects, profoundly less so. As a familiar and comfortable opponent, it is fine to tilt at the windmill of neo-Darwinism. That sadly ignores the wind turbine now thirty kilometers offshore.Nakashima
November 20, 2009
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Cabal, The inability to detect designers at work in nature is not a "scientific paradigm" whatsoever. The whole point of the opposition to ID is that science, properly defined, is incapable of such detections one way or the other. Such talk is philosophy and metaphysics, whether you detect design's presence or lack. But if you want to say that such detection is in the realm of science, good work - you've just legitimized ID. As for the lack of necessity for "supernatural forces", what nonsense. The fact that panpsychism, non-physicalistic metaphysics, multiverses, simulated/created universes, are now popping up as "scientific possibilities" puts the lie to that claim. The only difference is that what used to be recognized as the supernatural is now being called "natural" out of desperation. Rather like how neo-darwinism's death by criticism is now being shrugged off as of no interest to ID proponents. Almost as if this entire debate is less about science and more about metaphysics anyway.nullasalus
November 20, 2009
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A simplistic view might be that Newton's work confirmed that gravity is a fact and that advances in QM have not in any way lead to abandonment of the main scientific paradigm: We are not able to detect any designers at work in nature and until that unlikely discovery is made we cannot take such considerations seriously. IMHO, just as gravity is a fact even though AFAIK we have not been able to develop and test a complete theory of gravity, evolution also is an established fact even if there may be many facets of mechanism we have not yet fully understood. Just as we do not see any need for introducing supernatural forces in order to explain gravity, we don't see any need for them in any other field of science including evolution. That some people wish such forces would be detectable is another matter.Cabal
November 20, 2009
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Mustela Nivalis, Quantum mechanics did not merely "extend Newton's work" - it showed the previous, classical-mechanistic view of the world to be deeply flawed and flat-out wrong in some ways. Materialism took a savage beating as a direct result of this (one which was never really recovered from). Similarly, the advances which one may say are 'extending Darwin's work' are extending it by utterly contradicting him. We have Allen MacNeill saying that "neo-Darwinism" - the horse ID proponents have been wailing on with both fists for quite some time - is actually a dying or dead horse anyway. That model is dead, and is being superseded. Keep in mind, it isn't like Denyse O'Leary here has only just discovered discussions like these: She's been covering Margulis' and others views, with some considerable sympathy, for a while on her blog. People who think that the aims of ID proponents only advance if MN is eschewed in name are like those who think ID proponents universally insist that evolution is not true: Deeply misinformed about the concept and "movement" at large. But hey, believe what you want. To hear you guys talk, tomorrow the New Scientist could have a cover story (again) of "Darwin Was Wrong", and - so long as no one said "methodological naturalism", that lovable mirage, had to be dumped - it would be "cold comfort to ID proponents". Color me skeptical. And amused, while you're at it.nullasalus
November 20, 2009
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nullasalus at 8, I doubt ID proponents are going to find the sea change “cold comfort” Your doubts are not well-founded. Mr. MacNeill's analogy with quantum mechanics is well founded. Just as natural selection explained much empirical evidence of evolution, Newtonian mechanics explained many observations of physical processes. Neither was a complete explanation. Quantum mechanics extends Newton's work to the infinitesimally small, and the work of Kimura, Ohta, Jukes, Crow, and others extends the modern synthesis to a broader range of empirical evidence. Neither quantum mechanics nor the latest evolutionary biology theories require abandoning methodological naturalism. In fact, both demonstrate that the underlying philosophy of science is sound, and leads to greater explanatory power. This is indeed cold comfort for ID proponents.Mustela Nivalis
November 20, 2009
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I doubt ID proponents are going to find the sea change "cold comfort", Allen. If anything it's yet another vindication, a demonstration that the broad thrust of ID - particularly, that when it comes to evolutionary biology there's a tremendous amount of exaggeration (in terms of what we know about biology and species, what we don't know, how adequate our current state of knowledge is, what said knowledge indicates about our world, etc) - is correct. You're pointing out that ID proponents are out of date, but if that's true, all it means is they're fighting a battle they've already won, and simply don't realize it. (Indeed, that's my own position more and more.) You may as well dismiss ID proponents for their deep criticisms of materialism, on the grounds that materialism is an untenable and increasingly abandoned position anyway. That just a gripe-laden way of admitting "Well, you guys were right after all." And I say that well aware that you apparently reject materialism yourself.nullasalus
November 19, 2009
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Hello All, In his book Darwinian Fairytales, David Stove looks deeply at the Malthusian/Darwinian theory in the context of the life of man and human society, and not only finds it severely wanting, he finds it impossible. A very important and highly recommended book.EndoplasmicMessenger
November 19, 2009
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Interesting; both Will Provine and I have been saying "the modern evolutionary synthesis is dead" for years. Indeed, the phrase noted in the OP — "hardening of the synthesis" — was coined by Will Provine to describe the narrowing of focus in evolutionary theory during the first half of the 20th century to concepts entirely reducible to mathematical models, especially theoretical population genetics (see https://uncommondescent.com/intelligent-design/maciej-giertych-in-his-own-words/#comment-69014 and http://evolutionlist.blogspot.com/2006/03/where-real-action-is-in-evolutionary.html and http://evolutionlist.blogspot.com/2007/09/gene-is-dead-long-live-gene.html Ironically, John Sanford and William Dembski (among others in the ID camp) have not moved beyond this narrow focus on theoretical population genetics, and so have apparently missed the fact that evolutionary biology has evolved far beyond the narrow theoretical focus of the mid-20th century. As for people like Dr. Koonin taking a "big career risk" in stating the obvious, both Will and I have been saying all this about the "modern synthesis" for a very long time, yet both of us are respected members of the faculty at Cornell and neither of us have "suffered" in any way of which I'm aware. Yes, some of our colleagues disagree with us, some of them quite strenuously. That's what makes a life in academics so much fun! And when it's all over, we all go to Will's farmhouse for a beer (several actually) and an exhilarating slide down his bobsled run (that's all of us; EBs, TEs, IDs, and YECs...at least the one's who respect the rules of academic courtesy and no-holds-barred intellectual debate). Maybe that's because we have also pointed out that the "modern evolutionary synthesis" has itself evolved to the point that evolutionary biology today is broader, more generally applicable, and less narrowly focused than at any time since the publication of the Origin of Species 150 years ago. That's why I've titled my forthcoming book The Darwinian Revolutions — there's been more than one "evolution revolution", with plenty more coming. As Will is fond of saying, it's an incredibly exciting time to be an evolutionary biologist. Indeed, it's like being a physicist in 1905; a whole new world of theoretical and practical empirical research is opening up, with new discoveries being made every day. As just one example, Kyoto-prize-winning evolutionary biologists Peter and Rosemary Grant have reported on something that Darwin could only speculate about: the systematic empirical documentation of the "origin" of a new species (see http://evolutionlist.blogspot.com/2009/11/new-species-of-finch-may-have-evolved.html ). Creationists have of course moved the goalposts, arguing that "they accepted all along that new species could arise from existing ones, it's just "microevolution", which everyone accepts. This despite the fact that speciation has always been considered to be the first (and perhaps most important) stage in macroevolution, and that less than two decades ago creationists were confidently stating that "true" speciation had not only never been observed, it couldn't ever be observed because it can't happen. Now the leaders of the ID movement — people like Dr. Michael Behe and Dr. William Dembski — publicly state that they fully accept that descent with modification (i.e. evolution) has happened (despite the name of this blog), that microevolution (i.e. natural selection, sexual selection, and genetic drift) are also fully accepted, and the "real" focus of disagreement is over the "engines of variation" that produce the raw material upon which the "engines of micro and macroevolution" operate. They've come a long way, but they've missed the parade by a couple of decades. So it goes... As for the OP, I would say that Tyler's essay on where evolutionary biology is today is quite close to the the mark. The concept of natural selection as the foundation of evolutionary change has been largely "superseded", mostly through the work of Motoo Kimura, Tomoko Ohta, and others, who have shown both theoretically and empirically that natural selection has little or no effect on the vast majority of the genomes of most living organisms. However, ID supporters should find this sea change in evolutionary biology to be cold comfort. The overall effect of the advances in our understanding of how genomes and phenotypes change over time has had the same effect on evolutionary theory that the rise of quantum mechanics had on classical physics. Einstein famously asserted that "God does not play dice", but a century of physics research has shown him to be more wrong about how the universe works at the quantum level than ever. The same is true for the "evolving synthesis". Rather than revert to a neo-Paleyan paradigm (as proposed by Behe, Dembski, and their supporters), evolutionary biology has gone in the same direction as quantum mechanics. According to the "modern synthesis" of the last century, the genome was "homeostatic", "organized", and "regulated" primarily by natural selection. Sure there were purely random processes also going on (such as genetic drift), but most evolutionary change was both adaptive and coherent over time. Oops. Kimura, Ohta, Jukes, and Crow dropped a monkey wrench into that idea, and then Gould and Lewontin finished the job with their famous paper on "the spandrels of San Marco and the Panglossian paradigm". The rise of evo-devo over the past two decades has laid the groundwork for a completely new and empirically testable theory of macroevolution, a theory that is currently facilitating exponential progress in our understanding of how major evolutionary transitions happen. And iconoclasts like Lynn Margulis, Eva Jablonka, Marian Lamb, Mary Jane West-Eberhard, and David Sloan Wilson are rapidly overturning our understanding of how evolutionary change happens at all levels, and how it is inherited. So, as I have said many times before, when ID supporters set their sights on "neo-Darwinism" as a target for criticism, they set their sights on a model that has been all but abandoned. The carnival has moved on, folks, and ID supporters are fighting battles that evolutionary biologists left behind a half century and more ago.Allen_MacNeill
November 19, 2009
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In fact you can observe it yourself quite simply, as the number of microorganisms in a culture broth will grow exponentially until an required nutrient is exhausted.
No one was asserting that a population of organisms cannot grow exponentially. What I wrote was:
I think it’s also very questionable whether populations geometrically increase and that it is this “too many” competing for the “too few” resources that drives natural selection.
However, I have questions about your example. What if this "required nutrient" was not present from the start? Does the experiment still show the exponential growth? What happens when the population has grown so large that the "required nutrient" has been consumed?Mung
November 19, 2009
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"Actually, Koonin is just as likely to be ignored as not quietly received." Someone pointing out that the edifice of the modern synthesis is crumbling is running a big career risk. Bravo to Dr Koonin for standing up and we can only pray that it works out well for him.waterbear
November 19, 2009
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Mung
I think it’s also very questionable whether populations geometrically increase
In fact you can observe it yourself quite simply, as the number of microorganisms in a culture broth will grow exponentially until an required nutrient is exhausted. Of course, we are not talking about an empty Siberian expanse in that example, quite a different situation. More on exponential growth here http://en.wikipedia.org/wiki/Exponential_growthVictor Tussle
November 19, 2009
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How much is mere propaganda?
I think this may be the most important thing to arm the next generation of students with, namely the tools to determine if what they are being taught is mere propaganda or is worth listening to.Victor Tussle
November 19, 2009
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I think it's also very questionable whether populations geometrically increase and that it is this "too many" competing for the "too few" resources that drives natural selection. So the fundamental Malthusian basis can be questioned on two accounts: 1. The assertion of scarce resources. 2. The assertion of uncontrolled population expansion.Mung
November 19, 2009
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