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From the onset the real issue of the Darwin debate has always
been the status of the theory of natural selection. Many of the first reviewers
of Darwin's Origin accepted the evidence of evolution, but had difficulty
with his claims for the mechanism behind it. The strength of the evolutionary
hypothesis tends to mask the weakness of the claims for natural selection. It is
simply not true that Darwin provided voluminous and convincing evidence for his
theory of natural selection. Frequent reference under challenge to the evidence
of bacterial samples, where Darwinian thinking seems confirmed, does not give us
grounds for the universal generalization of natural selection. It is a confusing
circumstance in so far as the visible aspect nature shows the struggle for
existence, the teeming ecologies of competing life-forms. Natural selection is
the bottom line, the test of survival. But does it generate 'evolution'?
Verifying that it does so, and does so in all cases without exception, is
immensely difficult, perhaps impossible, leaving the claims of theory, and the
ambitions of social ideologists, in limbo. Darwin observed these innumerable
cases of natural selection, through Malthusian lenses, but none of these
conclusively established a true theory of evolution. The theory of natural
selection was also the linchpin for the claims of non-random evolution, and
denials of directionality or progress in evolution.
Darwin and Malthus Darwin's
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 transcends the simplistic narrative of populations in demographic
crisis.
As to claims that natural selection is
responsible for real evolution, say, that 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 and then maintain this dogmatically. And history shows any
number of Malthusian episodes, yet none of these have produced any clear
indications of real evolution. Man, as man, survives these disasters without
evolving at all.
Although we are critical of natural
selection, we are in the same plight as Darwinists, and cannot close the case
against it. However, beyond the often sterile and repetitious debate on this
question, we can point to the historical record and attempt to show how natural
selection is suddenly seen to be implausible indeed. Thus we might adopt a
slightly different perspective on the question by examining the limits of
natural selection as a form of historical explanation. The process of natural
selection in human populations and, beyond that, of cultures and civilizations
does not confirm Darwinian thinking. The survivors, the strong, are too often
the problem, not the solution. History shows us the tendency of random processes
to deviate in their own direction, and the need for a mainline of development to
ensure an outcome. We suspect that Darwinian monism is collating two separate
processes. The result is confusion over the meaning of historical development
and the sudden transformation of a theory into an historicist ideology in the
variants of Social Darwinism.
The
generation of complex organs was a problem for Darwin as he himself noted, and
now we know that he was wrong on major points, for we can see that mechanisms of
development are at work. The new science of evo-devo, clearly foreseen by the
embryologists a generation before Darwin, shows that the question of 'natural
teleology', with the emphasis on ‘natural’, is at the core of the details of
life processes, what then of the larger question of macroevolution itself?
Developmental genetics The
discovery of the genetics of development has amply confirmed the reluctance of
critics to accept the claims for natural selection. We see that complex organs
emerge from the combinations of a systematic genetic toolkit, not via random
natural selection. The question remains as to the source of that toolkit.
Darwinians have retreated to the claim that random mutation in developmental
genes is the core process, a significant change in the claims made.
We
are left with a question, at what range or interval does evolution occur? The
very nature of the question challenges the assumption of some kind of continuous
slow evolution. How do we know that some kind of 'intermittent rapid evolution'
doesn't take place in the vast and undocumented intervals of deep time? The
answer is we don't, and the one crucial case, the emergence of man, shows
unmistakable evidence of a sudden transition, the threshold period ca. -50000 of
the appearance of modern man. The alternatives may not be mutually exclusive. We
could hardly conclude anything given the evidence, but the case for natural
selection is by no means established. Here Lamarck's instincts were better
than Darwin's, keeping in mind that we are not referring to his theoy of
adaptation, but to his intuitive division of the problem into double levels.
Lamarck
The history of biology has virtually written out the figure of Lamarck, but
he is in many ways the real founder of evolutionary theory. Furthermore, his
formulation, despite its less polished scientific character, proposed a far more
realistic version of the idea of evolution, with two levels of action. These
were reduced by Darwin to a single monistic explanation that suffers inherent
contradictions. Unfortunately Lamarck's other theory of adaptation tended to
discredit his contributions. Finally, the radical associations of the idea of
evolution in the period of revolution marginalized his contribution.
Two level evolution Many of the problems of evolutionary theory disappear
if we posit two levels of action, natural selection or other processes and a
direction setter operating over long- range intervals. This is often depicted as
‘micro’ and macro’-evolution, although these terms suffer prior
definitions we may not use (e.g. macroevolution as speciation). The simplest
version of this would be an intermittent macro process operating in short bursts
on continuous random evolution. Since directionality suggests teleology
(although the two are different) and is taboo in current science, biologists
disallow this second possibility, which is very difficult to observe, but the
result is riddled with difficulties. We will soon discover this two-level
braiding of different processes in history itself.
Human evolution Darwinists are confronted with ambiguous evidence, the
repeated differentiations of hominids in their descent from the great apes. How
do we know that Darwinian evolution accounts for this? We don’t. In fact the
data fits the rubric of two-level evolution just as well, and we see the
repeated ‘selection’ of strains against the backdrop of static lineages left
behind by a unique advancing branch. We
should face the fact that the so-called Great Explosion fits this interpretation
very well.
Macro/micro We must create our own
distinctions of macro and micro. As we examine the eonic effect, one approach is
to consider the eonic effect itself (cf. the evidence of the Axial Age) as the
‘macro’ component, and the ethical or qualitative aspect of individual
action the ‘micro’. This makes ‘micro-evolution’ in our historical sense
the degree of self-consciousness in action. That’s very different from the
instant Social Darwinism of the ‘historical agent who overhears Darwinists
talking’ and puts a false valuation on competitive, value-sheared behavior
attempting to imitate natural selection.
It
makes sense to think in terms of the two levels Lamarck proposed, although he
got into metaphysical difficulties immediately. Our approach will be slightly
different. We are likely to summon up two such levels of evolution, quite
possibly also taken as continuous and discontinuous, braided together.
Inexorably, attempts to reintroduce two levels of evolution reappear in the
various theories of punctuated equilibrium, mostly still entangled with
selectionist preconceptions.
Two
levels of evolution As proceed to examine the eonic effect we will discover
the unexpected way in which history itself can be resolved as an (historical,
non-genetic) ‘evolutionary’ process or processes operating on two levels.
One level shows continuous action, the other an intermittent character that
interrupts the general stream of events to redirect that stream. The phenomenon
of the Axial Age is hardly explainable on any other basis.
The Axial Age This isn’t speculation. An unmistakable instance where
two level explanations resolve the facts is the phenomenon of the Axial Age: we
see two levels to cultural evolution, the stream of cultures, and the sudden
interrupt phase of rapid innovation and redirection. This was a mere 2500+ years
ago, right in our back yard. There is no genetic component to these events.
The level of selection is that of whole cultures in brief time-slices!
Note: Gaps arguments
Proponents of discontinuous evolution tend to be their own worst enemies, and we
will tend to avoid the terms ‘continuous/discontinuous’ except as facon
de parler. The action of a feedback device is discontinuous, but not grounds
for supernatural explanation. The foundation for all claims about evolution lies
in the fossil record. But 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 this 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. Over and over we see the phenomenon of rapid
emergence followed by relative stasis. The record of human evolution itself is
ambiguous here. 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 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 some 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. Some form of macromutation (i.e. a sudden change in developmental
genes), for example, might well produce what looks like a gap. What is a gap? It
is highly likely that there is a continuous sequence of organisms showing an
unbroken lineage of bodily forms. That is not the same as saying that natural
selection alone is at work. However, we have no conclusive grounds to extend
this claim to the factor of consciousness, especially in the human case. A
sudden change of consciousness, or its transformation as
‘self-consciousness’, can, as we see from the Axial Age, change the
direction of history. But these critics have a point, and a refinement of the
'gaps' argument is easy to provide, hence the challenge to Darwin's theory
remains in some form. Taken over all, without claiming gaps in the record, we
should suspect that something is speeding up the process of evolution beyond the
rate entailed by natural selection.
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 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'. The issue is bound up in distinctions of
microevolution and so-called macroevolution, or speciation. The existence of
microevolutionary processes is not in doubt, but the elusive factor of
macroevolution remains unclear.
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 is logical
in the abstract, but in this case 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. The discovery of complex genetic components such as
the developmental genes suggests one way of resolving the seeming paradox. But
that is not enough. Consider the Axial Age again.
Gap
argument in history As we move to study world history in light of the eonic
effect, we will discover how tricky the question of 'gaps' really is.
Considering the sudden compression or close packing of innovations in the
Axial Age, in a finite interval, we have something that shows, not a gap, but
historical continuity at all points, yet also shows a sudden speed up of
development, and on a level that has no connection that we know of to genetics. This
could be defined as 'discontinuity' but hardly a gap. That should leave us wary
of pronouncements about deep time. Only close observation at the level of
centuries suffices to discover what is going on. It is better to bypass the
confused language of discontinuity and gaps, and think in terms of transitions.
Remarkably,
the perfect example of the discontinuity factor, and its elusive basis, lies in
the attempt to resolve the mystery of 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. We should be wary here of inadequate
evidence, and simply note that we are under no evidentiary obligation to accept
Darwinian claims at the current level of demonstration. 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. Once again the question of two levels suggests
its relevance. 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. They are based on a monopoly of public communication to drown
out critics, and little more. The evidence for this Great Explosion, as a sudden
transition, 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 theory. 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.
We
might consider again the example of acceleration, and beyond that the definition
of science in the case of biology. On the one hand, biologists wish to make
evolutionary theory compatible with physics, and yet to do so they must fail to
do what physicists do: build a science around a type of 'force'. This question
was very clear in the eighteenth century, but the result was the emergence of
vitalism, which was not up to the job of explanation. 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. It is
nonetheless worth considering the force analogue, and then matching that to,
say, the Axial Age phenomenon. Clearly natural selection operates through
history, but the Axial period shows there is a ‘something like a force’ that
suddenly drives the historical process in a new direction.
There
is something peculiar about this limitation in the Darwin scheme, 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 is heuristic and must be
set aside as at best metaphor 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 the basic issue must remain. Of
course, we have already criticized the physicalism that created reductionist
thinking, and there is no reason why biological evolution should conform to a
force argument. But there is likely to be an analogue to a force argument in the
sense of some intangible ‘principle of sufficient reason’. That is, any
phenomenon is going to have an explanation of some kind. This is the oddity of
Darwinism. The surrogate substitute of natural selection for a true
‘explanation’ of what drives evolution leaves it with a strange void at its
core. 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. We begin to suspect that the
regime of natural selection too often perpetuates continuity, and is really the
opposite of 'evolution'!
Instead
of thinking in terms of gaps we can simply compare large time intervals. The
course of purely random evolution requires by statistical calculation an immense
vista of time for its action. The ratio of that interval length to that of the
actual history of life produces an inference that evolution proceeds much more
rapidly than Darwin's theory would allow. Thus 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 &
Wickrmasinghe, Evolution From Space
(London: Dent, 1981), p. 148]
This
passage has been the object of endless ‘refutations’ but we forget that
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. And it is hard to see how random mutations in complex developmental
sequences is going to work as a Darwinized evo-devo. The issue is not gaps but
the compression inferred by the time-periods in question. 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."
Note:
Theories of Evidence The Darwin debate constantly scrambles the issues of
the 'fact' of evolution and the 'theory'. 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.
Darwinism has yet to produce a proper theory of the evidence. 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
the 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 thought the full evolution of forms was
explained by its surface aspect, the competitive struggle in biogeographical
regions.
This point is difficult to grasp without
seeing an example. As move to explore the eonic effect we will naturally find
the need to create a map of the evidence, with a possible theory about the
nature of that evidence, e.g. a cyclical interpretation of cultural evolution.
The task of explaining such a dynamic is quite different.
We should note that the Axial Age shows us a pattern of evidence. We can
propose a theory of this evidence, i.e. that it is part of larger pattern of
such evidence, without explaining the dynamics behind it. And we must act,
willy-nilly, or react to this pattern, since it contains sources of our current
action. A theory will itself alter, or limit, our action, which
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