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There has been a spate of articles in mainstream journals and
their websites recently, taking on the current brouhaha over
intelligent design. Once again the issue is reaching the courts,
and the battle for public opinion is underway. Now the New
Republic joins the fray with an extensive commentary, and an
attempt to restate and defend the basic tenets of Darwinian
theory. Since we speaking of education, it is important to note
how the promotion of Darwinian biology has been a victim of its
own success. A media monopoly has left the public poorly
equipped to see the problems with Darwinism. The public has
never heard from the scientific critics, and now gets the
misleading impression that this is simply some nonsense from the
Bible Belt. The current intelligent design movement actually
shows the exact point at which the scientific critics were
coopted by the more organized religionists. The work of many
critics, one of the most recent, Michael Denton in particular,
in his Evolution: A Theory in Crisis, suddenly reached a
large public in the work Darwin on Trial, by Philip
Johnson, and the movement took off from there. Neither of these
works even mentioned intelligent design. An entire generation of
students raised on the canned Darwin diet have effectively been
sent into battle without a rifle, and seem not to realize where
they are going wrong, or that there could even be reasonable
criticism of Darwinian tenets present in their own
literature.
Therefore these articles in defense of Darwinism tend to get
a bit tedious because they tend to be stitched together from
talking points, and exude an aura of scientific hauteur that is
not matched by the arguments offered for Darwin's theory. The
scientific community exhibits great indignation that anyone
should doubt the decrees of science, but the result is
invariably the repetitious restatement of basic fallacies
present ab origo that can't pass the test anymore,
because they merely show that spokesmen trained in science are
unaware of the basic critique of Darwinism that has emerged.
This critique has now become entangled in the revived claims
for intelligent design resulting in still further
polarizing confusion. The public defense of Darwin reeks of the
'official view' in the age of Big Science, and it all looks so
reasonable, so credentialed and peer-reviewed, but
Darwinists have perfected the art of restating dubious
propositions as if noone could doubt them, and doing this in the
context of histories of the subject that are misleading. Thus
here, after summarizing the three basics in Darwinian theory,
descent, speciation, natural selection, the author says
These three propositions were first articulated in 1859 by Darwin in
On the Origin of Species, and they have not changed substantially, although they have been refined and supplemented by modern work. But Darwin did not propose these ideas as pure "theory"; he also provided voluminous and convincing evidence for them. The weight of this evidence was so overwhelming that it crushed creationism. Within fifteen years, nearly all biologists, previously adherents of "natural theology," abandoned that view and accepted Darwin's first two propositions. Broad acceptance of natural selection came much later, around 1930.
The debate constantly scrambles the issues of the
'fact' of evolution and the 'theory'. And this situation is
certainly not helped by the Creationist camp, which takes an
extreme position, rejecting both the fact and the theory. This
tends to induce the same mistake in Darwinists who should
know better, or else feel so harried that they must take on both
questions at the same time, confusing their responses. There is
a complication here, which is that we can distinguish a 'theory
of the evidence' from a 'theory to explain that evidence',
should that theory of the evidence graduate to stable data. This
subtle difference constantly confuses all discussion. Most
discussions of biological evolution should be focused on
arriving at the facts, with detailed records of how evolution
actually happened. But that is a very difficult thing to do, and
our temptation is to project a simple generalization that will
apply prior to determining the facts of the case. In economics,
for example, a theory of evidence would be, as a theory, that
economies show cyclical behavior. A second theory to explain the
first, i.e. explaining cyclical behavior, is quite another task.
Note that without a detailed record we would be likely to think
in the abstract about economic systems. This example shows the
dilemma of Darwinian theory. We have no detailed record of the
way evolution actually happened, and tend to deal only in
abstractions based on Malthusian or other misleading examples.
This is clearly the trap into which Darwin and Wallace fell,
because they were struck by the teeming behavior of jungle
populations with its clear profusion of speciation processes.
They snapped out of the archaic semi-Biblical view of stable
species, rightly so, but thought the survivalist drama of this
spectacle of life was explained by its surface aspect, the
competitive struggle in biogeographical regions.
In any case, it is simply not true that Darwin provided
voluminous and convincing evidence for this theory of natural
selection, although he summarized the rising tide of data
suggesting evolution. He observed innumerable cases of natural
selection, none of which conclusively established a true theory
of evolution. His extrapolations from Malthus and the
selective breeding of animals foisted a misleading mental image
of what we mean by 'evolution' on a subject whose complexity and
enigma has only increased with time. As to claims that natural
selection is responsible for real evolution, say, of man, one
has but to count the number of skeletons of hominids over time
in the past several million years to see the extreme thinness of
the record. These skeletal remains tell us very little indeed
about the process of development as it actually occurred. It is
merely an extravagant projection to say that natural selection
produced language as an adaptation. Where's the proof of this?
The evidence for evolution was indeed rapidly accepted by the
public, but problems with Darwin's theory persisted. T. H.
himself Huxley had reservations about natural selection, even as
he championed the broad context of the evolutionary record, the
fact of evolution. Thus, by the end of the century we have the
so-called 'eclipse of Darwinism', followed by the comeback
called the Neo-Darwinian Synthesis. We should note that Huxley
in later years saw the catch in evolutionary thinking applied to
man, which is that in practice we move to contradict natural
selection, because we have somehow entered some other form of
evolution. So what is this missing evolution? Here again
misleading ad hoc extensions to Darwin have appeared, such as
the various attempts to explain, or explain away, altruism. The
right approach surely is to ask how a conscious agent could have
evolved who has sufficient freedom to act in a moral fashion.
This is not question of instinct, or programmatic DNA. It
is hard to believe that structures as wonderously complex as
what we are now seeing don't have the better potential for this
superior form of evolutionary ethics done right. There are two
things here, the nature of the agent, and his evolution to that
state. To say that ethical freedom is the result of
environmental adaptation courts disbelief, and some puzzlement
at the boxed in character of biological thought. So it is the
arrested thinking of Darwinists, not their actual subject
matter, that is the problem here. They should start to examine
the implications of the genetic revolution for the clear
warnings of philosophers on this question of the real man to be
explained. Figures such as Kant clearly saw this confusion early
on in response to physics, what to say of the derivative
methodologies of the biologists.
Thus, the limits of the original reductionist category of
explanation are fully visible in these speculative renditions of
the evolution of ethics, and we should at least demand closely
tracked evidence that these proposals have a sound basis in the
record. In general, evolutionary reductionism has a problem with
ethical issues, and more generally many of the original
objections raised even by the first reviewers remain as before
with this 'standard paradigm'. In any case it is simply a
distortion of science to say that Darwin properly documented his
theory. It is not sufficient to cite the case of bacteria in a
dish undergoing selection processes. Thus the author
notes,
But we no longer need to buttress natural selection solely with analogy and logic. Biologists have now observed hundreds of cases of natural selection, beginning with the well-known examples of bacterial resistance to antibiotics, insect resistance to DDT, and HIV resistance to antiviral drugs. Natural selection accounts for the resistance of fish and mice to predators by making them more camouflaged, and for the adaptation of plants to toxic minerals in the soil. (A long list of examples may be found in Natural Selection in the Wild, by John
Endler.) Moreover, the strength of selection observed in the wild, when extrapolated over long periods, is more than adequate to explain the diversification of life on Earth.
These examples, while of great interest, simply cannot, as
the author suggests, be extrapolated over long periods. How does
it follow that the emergence of man is proven to be due to
natural selection because of the example of germs? It is
misleading to reason so simplistically, and thinking this is
sufficient blinds us to the real absence of a true evolutionary
theory. In fact, the premiere case, the finches of Darwin,
leaves us wondering if these are really distinct species at all.
Darwin's theory, in the suggestion of the title of his book,
never actually solves the problem of speciation.
But the author rightly examines the evidence of the fossil
record with its clear indications of the fact of evolution, if
there are those (e.g. the Young Earthers) still who doubt the
broad outlines of evolutionary descent in deep time. However,
the question of the fossil record is not so simple. One of the
most persistent criticisms of Darwin has always been that of the
so-called gaps in the fossil record. There can be no doubt that
the record is incomplete, and that something suspicious lurks in
the data Darwinists give for the theory of natural selection.
The fossil record isn't really homogenous, in the sense that
random evolution should not show sudden changes in direction.
Nonetheless, considerable progress has been made here by
paleontologists. And as the author notes many of these supposed
gaps have been filled, or, if not filled, given some inkling of
a transitional something (e.g. dinosaurs with feathers, or the
basilosaurus), so at least to a small degree the record is
filling out, although this does not add one jot to the claims
for natural selection.
Here critics of Darwin have too often fallen into
confusion themselves, because the whole idea of a 'gap' in the
record suffers from misdefinition, if not incoherence. Fatal
theological temptations induce hallucination here in many
otherwise sincere minds aware of the problems of the fossil
accounts. Although it is certainly true that the fossil record
is very sparse, too sparse to maintain Darwinian certainties, it
is not likely that one will find 'gaps' in the record. But these
critics have a point, and a refinement of the 'gaps' argument is
easy to provide, and the challenge to Darwin's theory remains in
some form. Indeed, conventional Darwinians such as S. J. Gould
upgraded this argument with the various claims for so-called
'punctuated equilibrium', which amounts to seeing that emergence
in some form is often very sudden, followed by a period of
stasis where the rate of change is small, or nonexistent.
Granting that such data is hard to interpret, the basic issue
simply won't go away. These theories suffered from the inability
to disassociate themselves from the fallacies of natural
selection, as they attempted to have their cake and eat it too,
by proposing various 'levels of selection'. But real evolution
is altogether likely to be something different. And it might
well 'punctuate', this being followed by some sort of
'equilibrium'.
Those who propose this issue of 'gaps' in the record, then,
are onto something, but need to consider that the fossil record
is always going to be continuous in some sense. This does not
preempt the possibility, not of 'gaps', but of some other
evolutionary process that creates a real discontinuity in some
definable sense on top of that continuity. Think in terms of
acceleration, as artificial as physics logic might be applied to
evolution. Acceleration is not a 'gaps' argument, and its
discontinuous action is not in contradiction with continuous
motion. To propose discontinuity as antithetical to
continuity leads to the hopeless quagmire of miraculous
interventions of one kind of another in the creationist vein. We
cannot say in advance what that kind of process it would be that
generates this sense of discontinuity, but its existence is
something that we must suspect based on the evidence that we
have.
Remarkably, the perfect example is the descent of man. There
the (not very adequate) evidence of the so-called Great
Explosion stands out as a mockery of the basic Darwinian claims.
Something very sudden occurred in the emergence of man, or so it
seems from the evidence. However, this example typifies the
confusion Darwin critics often succumb to, because the evidence
of some sudden crossing of a threshold for species man is not
the same as man's speciation as such, nor is it incompatible
with earlier continuous processes that may also have been
crucial. But, in any event, the descent of man is beset with the
issue of continuity/discontinuity dead-center in its data set.
So much for Darwinian certainties here. The evidence for this
Great Explosion, wretchedly poor as it is, is at least on a par
with Darwinian presumptions in advance they have explained it
all via the nearly metaphysical projection backwards of
selectionist explanation. So the evolution of man shows the
prime difficulty latent in all theories of the Darwinian type,
if they can be called theories at all. The point is that
Darwinists merely assert they have solved the issue of man's
descent, when they most definitely have not.
It is this search for the missing process that Darwinists
find unacceptable, because there are no candidates for this in
the thinking of reductionist science. There is something almost
'a priori' about all this reasoning, in the sense that any
science is going to have a 'force' argument, this force is going
to show itself in terms of its own action, archetypically
'acceleration', and this action will seemingly be short acting.
Such language, like a husk, will be set aside once we have real
data to examine, but the point is that Darwinists constantly
remind us of the right way to do science, even as they propose a
science with no substance to it.. This example of the missing
'force' uses the language of physics, but yet the basic issue
must remain. The point is that Darwinism is quite anomalous as a
'science' in the sense that this process that actually 'does
evolution' is missing, and the strong suspicion is always there
that natural selection, however real in the survival struggles
of organisms, is simply the microevolution we see in the absence
of 'real evolution'. Darwinists become adamant here, or change
the subject, but the sword of Damocles has always stood over
Darwin's claims for this reason. It is like confusing Newton's
first and second laws.
The point is essential since the full complexity of evolution
was actually better addressed by the first real evolutionary
theorist, Lamarck, who proposed two levels to development.
Lamarck is too often pegged with his other claims for
adaptation, for which he is frequently denounced (although
Darwin in his later editions himself succumbed to Lamarckism).
In essence, disregarding this other issue, Lamarck's
conjecture was that these two levels correspond to environmental
and progressive, or directional, aspects of evolution. The point
is that the data of evolution certainly suggests the rightness
of Lamarck's thinking, but the detection of this second aspect
to evolution is going to be difficult. Thus as Darwin collapsed
evolutionary theory the monistic one-level type, a subtle
confusion entered the whole subject, because the data is being
wrongly interpreted from the first step. Gould's punctuated
equilibrium shows the way a working biologist is driven to
reinvent this second level, with what success is not
clear.
Darwinists tend to be very much against notions of
evolutionary progress, because of their ideological overtones,
and misuse in discussions of cultural evolution, but we can
dispense with the conventional idea of progress by adopting a
simple distinction of levels to evolution, this generating the
micro and macro aspects of an evolutionary record. This is a
difficult route to travel, but there is probably no other
alternative. Current accounts, for example, never explain what
environmental adaptation led to the branching of man from a
series of chimpanzee or hominid trunks. There is no such
explanation, with the relevant data, that makes much sense, or
offers a reason that wouldn't as well apply to all cases.
In general, Darwinists assume that branching differentiation as
random evolution is the only source of evolution. But the
evidence as well suggests that evolution can change direction
and select via one of the branches by some unknown process,
leaving these once parallel branches behind. Something is
missing in our accounts.
We can infer that something is missing in
standard accounts by simple probability arguments. In a now
classic text, Evolution From Space, Hoyle and Wickramasinghe give one version of this objection.
Darwinian
evolution is most unlikely to get even one polypeptide right,
let alone the thousands on which living cells depend for their
survival. This situation is well known to geneticists and yet
nobody seems prepared to blow the whistle on the theory. [Hoyle
& N. Wickrmasinghe, Evolution
From Space (London: Dent, 1981), p. 148]
This passage has been excoriated and ‘refuted’
so many times that we forget genetic research has essentially
confirmed it with the discovery of new developmental structures
and processes, as the level of DNA, if not large-scale
evolution. Our abstraction, the missing 'force', turned out to
be the highly organized teleological processes clearly visible
in the most extraordinary fashion in DNA soups! As the geneticist Theodosius Dobzhansky remarked, "Nothing in biology makes sense except in the light of evolution."
There is a corollary to this, "Evolution makes little sense
in the light of natural selection."
Thus, in Hoyle and Wickramasinghe's terms, one way to
state the problem with Darwinism is, not that there are 'gaps'
in the record, although critical intervals of change might well
exist, but that the entire record is somehow compressed (one
thinks of the term from algorithmic complexity theory), that is,
taken all in all, the whole thing happens much faster than it
should have, if evolution were random. That
this issue won't go away can also be seen from the simple fact
that the onset of life itself cannot easily fall into the
general account of evolution after the emergence of life.
It
is here that the current proponents of intelligent design enter
with their various arguments, but it is very difficult to get
much further than the simple expression of discrepancy present
in the Hoyle-Wickramasinghe statement. The problem here is that
to infer design from the failure of natural selection is to
embark on one and the same speculative extension to the facts
that Darwinists are guilty of. We can see that there is a
problem with natural selection. But why should this lead us to
reject methodological naturalism, to use the popular phrase for
the 'materialism' of scientific methodology now under attack by
religious groups? Here, of course, Darwin himself realized he
had a problem. And intelligent design authors such as
Thomas Behe have produced their claims for irreducible
complexity. Much of this discussion is futile since it confuses
a theory of the evidence, with some theory to explain that
evidence. We simply don't know enough biochemistry, or have
enough evolutionary data, to answer the question, but
given what we already know it is likely to prove misleading to
inject design arguments into the enigma of development. To be
sure, design in some sense is the case by definition. The
discussion confuses different senses of design. A body organ is
in some sense 'designed' to perform some function, although a
better terminology is greatly to be desired. The evolutionary
process that produced that surely ought to be something more
than natural selection, but just as surely something that falls
within a rubric of nature. But without the theory of the
evidence reaching critical thresholds as stable data, we simply
can't say. If Behe's argument had been proposed solely as a
critique of natural selection, proposed as a question, it might
have been more successful. Instead we find the distracting issue
of theology impinging on the clear limits of Darwin's
theory.
The
author attempts to answer all this with what is now a standard
type response (noting that Darwin himself anticipated this type
of thinking):
Thus our eyes did not suddenly appear as full-fledged camera eyes, but evolved from simpler eyes, having fewer components, in ancestral species. Darwin brilliantly addressed this argument by surveying existing species to see if one could find functional but less complex eyes that not only were useful, but also could be strung together into a hypothetical sequence showing how a camera eye might evolve. If this could be done--and it can--then the argument for irreducible complexity vanishes, for the eyes of existing species are obviously useful, and each step in the hypothetical sequence could thus evolve by natural selection.
A
giant MAYBE echoes in this statement, haunted by a very severe
MAYBE NOT. This statement is, in any case, purely speculative,
and not backed up by any evidence that it did in fact happen
this way. The objection of Hoyle/Wichramasinghe is not easily
shunted aside by this line of reasoning. Even the small steps,
at the polypeptide level, are vexacious, what to say of
'large-small' steps constituting some proto-eye in a series
leading to a fully developed eye. We would need to know, not
just that this is possible by some naturalistic process, by that
natural selection is sufficient, and that seems doubtful. And in
fact, biologists are already stumbling on the answer, perhaps,
in the current so-called evo-devo biology, in developmental
genetics. Complex organs don't arise at all by chance, they
develop in programmatic fashion via the switching mechanisms of
hox genes, and the like. What is remarkable is the way that
Darwinian thinking survives even in the midst of a biological
revolution that would appear to contradict the Darwinian
starting point. After all, we can see that it is not at all a
question of chance mutations producing an eye, if it is true
that such complex organs arise through the restructuring of
developmental sequences. It is puzzling that biologists have
remained so rigid on the issue of Darwin even as their own
findings have offered them a way out of the Darwin fallacies.
The problem is that these developmental sequences at the level
of DNA still tell us nothing about similar developmental
processes at the level of evolution in the large. And there a
distinct new type of evolutionary theory would be necessary, one
that is more than a matter of genetics. Instead, Darwinian
biologists are proceeding with half their subject taken away by
the new genetics with the same old claims about mutations in
these developmental structures. There should be a call for a
time-out, while the inconsistencies in these claims are sorted
out, and they decide what they do mean by evolution. In fact,
the discovery of DNA should have led to a complete review of
Darwinian theory. Instead, the field of popular evolution veered
off into a kind of genetic fundamentalism that has confused a
whole generation of Darwinians. Proposing random evolution of
highly teleological biochemistries is a hodgepodge, and in
reality a form of retreat, we should be on the look out for
evidence of the directional evolution we had missed at the level
of macroevolution. The problem is that this would no longer be
genetic.
Anyone
who has followed the other web pages at this site will know will
know what is being suggested here, for we do in fact have
evidence of this kind of macroevolutionary process in our own
history.
The
clear teleological aspect of the structures discovered in
current advanced biochemical research, and these often
associated with developmental processes, should alert us to the
fact that we have been here before, and that all of this is a
rediscovery or resurfacing of issues that were on the table in
the generation before Darwin. The story of this generation is
never fully told in most accounts of biology, save in passing,
or in a lead up to Darwin. But in many ways Darwin contracted
the field of discourse by trying to foist his monistic
selectionism on a subject many knew at the time to be more
complex. In fact this is clear from the statements of Huxley
himself whose views were influenced by this earlier research.
This was the reason for his initial reservations about Darwin's
theory. One is left to wonder if the scientific polish Darwin
gave to his evolutionary data was not a misleading rendition of
the inchoate, but broader, versions of evolutionary theory
visible in his immediate predecessors. This was a rich field, if
one prone to extravagant metaphysics, particularly that
associated with German Classical philosophy.
In
any case, the studies of embryological development in figures
such as Von Baer, or Geoffrey St. Hilaire, have found their
confirmation in the new developmental genetics, leading us to
wonder if the basic methodology of scientific biology is
altogether unsound. The coming of Darwin was the beginning of an
expanding scientific discipline, one that prided itself on its
positivistic liberation from philosophy. But we should wonder if
this wasn't the downfall of the whole subject, at its first
step. German Classical philosophy tends to be denounced for its
Hegelian renditions of transcendentalism as Nature Philosophy
(Hegel was not actually a transcendentalist, more like a
Spinozist), and the early Darwin of the period just after his
voyage on the Beagle coincides exactly with the onset of the
positivistic challenge to the great fashion of Hegelianism and
the evolutionism of Schelling, this challenge almost
symbolically visible in a figure such as Karl Marx, who, like
Darwin, reflects the sea change that overtook culture so rapidly
in the now forgotten period of the birth of modern evolutionary
theory.
But
behind this lies something deeper originating in the Kantian
phase, where the issues of scientific methodology, the
Enlightenment, and the problems of biology were given a
potentially more fruitful treatment by Kant himself, who took
the measure of the rising methodology inherited from Newtonian
physics, and produced a way to mediate the difficulties this was
destined to create in the expansion of the sciences. And the
school of Kant gave rise to the now nearly forgotten
'teleomechanists', whose careful methodology of the organism was
in principle able to reconcile, or at least be wary of, the
inherent contradictions of causal and teleological analysis,
applied to organisms. If there is one thing that is obvious it
is that current biology is hoist on its own inability to produce
the net equivalent of this early, and very brilliant, version of
the Kantian system. The point here, for a short discussion, is
that we can proceed with great success toward the causal
explication of complex structures, yet still be unable to come
to grips with the organism as a whole, in an intractable
teleological aspect that remains beyond our ken. This is clear
if we examine the state of current biology, and the intractable
Darwin debate. For it is the deceptive strategy of the
intelligent design argumentation to try and seize the issue with
a crypto-theological argument by design. This was clearly
critiqued in the work of Kant, and never entered the work of the
non-Hegelian biologists working in this vein. In general,
without pursuing this further here, we should be alerted the
limits of current scientific methodology as applied to
biological questions, and not pretend that Darwinists have all
the answers. The current Darwin debate suffers from the
obsessive promotion of false emphasis on natural selection. The
initial limits of Darwin's theory are returning to haunt the
debate, and the educational harm done to young scientists by the
excessively narrow view of biology now dominant has led to their
inability to properly address the attempts from the Bible Belt
to free themselves from the yoke of a bad theory.
We
have arrived in short order at the realization that all is not
well with Darwin's theory, without yielding anything to the
design argument, and we can also see why this is destined to
arise. In the vacuum of the limited positivism of modern science
the question of organismic structure, and its concealed
teleological aspect, has festered to the point where open
rejection of methodological naturalism has been given like a
free gift to the supernaturalists of anti-evolution. The sense
of the teleological, clearly evident in the structures of DNA,
cannot be handled in the concepts of standard science, and give
an opportunity to religious critics to inject the design
argument where it probably doesn't belong. Strangely, yet
understandably, modern science has yielded the ground to those
who ply spiritual forms of explanation. But there is no reason
that it should be this way. After the endless promotion of
Darwin, we discover that he didn't really produce a theory at
all, and the whole debate is simply reverting to the design
theology Darwin claimed to have superceded. It could as well
backtrack for a moment to the earlier generation before Darwin
where the broader scope of evolutionism was gestating, often
with greater insight, if not sophistication, than what current
science is capable of. Kant virtually prophesies the muddle of
the current Darwin debate in the way he responds to the naive
scientism of the Newtonians, if not Newton himself. It is
important for scientists themselves to look critically at their
subject matter, and stop this misguided promotion of natural
selection as the key to both evolution and the universe. The
longer they wait the greater the reaction in the end, and we are
seeing the paradox of wooly-minded creationists better prepped
in the flaws of Darwin than most students of science.
Intelligent design has simply flowed into the void produced by
Darwinian paradigm thinking. If this is done the issue of what
to teach in schools will answer itself, and it will be an issue
of broadening the minds of students to the real history of
science, and of biology, and center itself on the right
foundation, the fact of evolution, and the limits of theory,
including the imposter of intelligent design.
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