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Is Everything Relative?
A Debate on theUnity of
Knowledge
Paul Gross's Address on Consilience
et me deal first with the
issue of ulterior motives. One really needs to know why Wilson, given the
richness of the honors that have been showered upon him in a long and
fruitful life, wants to stick his neck out by doing this sort of thing
regularly. I don't know the answer, but lots of other people think they
do. For example, in the current New York Review of Books, Steve
Jones lets slip his notion of what Wilson's motives
are--political--obviously. He says: "When it comes to evolution, Wilson is
a real crusader. He sees it as a seamless transition from the primeval
slime to the Clinton administration, or one suspects from his last chapter
to the Gingrich government that ought in any reasonable universe to
succeed it." Now it is hard to tell here whether it's Steve Jones who
thinks a Gingrich government should succeed the Clinton administration, or
Wilson whom Jones is crediting with that thought. But no matter it is a
sort of typical statement for the New York Review. It produces a
frisson of political cultural recognition. The chapter Jones refers
to is simply Wilson arguing that present threats to the Earth's
ecosystems, hence ultimately to humanity, will be mitigated only when
there is enough consilient knowledge among the planetary sciences, the
biology of belief, the social policy disciplines and ethics, and enough
knowers thereof to act on it. One needn't share Wilson's passion of
environmentalism to agree on the value of such knowledge if it is
available or if such knowers exist. My impression is that Wilson has
politics like the rest of us, but certainly compared with most writers on
human-social behavior, his arguments are uniquely fair-minded and none
partisan (which hasn't stopped his accusers nor is it likely to).
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But I want to summarize in the
minutes I have what the serious or punitively serious quarrels with
Wilson's thesis are. The current organization of the intellectual
disciplines is not inevitable. It is a product of modern history, of
the Enlightenment, of the forms of opposition to it, and that
disposition, or fragmentation, as Wilson sees it, of the disciplines
has a good side--it has contributed to the growth of knowledge--but
a bad side in the sense that it stands in the way of explanatory
interactions and collaborations. This is isn't a matter of mere
fashionable inter-disciplinary. The issue is the extent to which
phenomena at higher levels of complexity can and should be
illuminated by knowledge of systems at lower levels. In the natural
sciences, that kind of illumination has in the last 100 years
catalyzed an explosion of knowledge about the physical world. Wilson
is simply arguing that it is time for this same sort of explanatory
interaction to be sought actively among the following: biology,
especially the biologically based cognitive sciences, the social
sciences, and the humanities. In particular it is time, I think he
is arguing, for the human cognitive repertoire to be examined deeply
in light of organic evolution which created it.
So now lets see what sorts of claims can be
urged and are being urged against this thesis moving from the
ridiculous to at least the potentially sublime. One, evolution never
happened; therefore it could not create human cognition. I dismiss
it. You leave aside technical arguments about the mechanisms of
evolution and the brute facts of it, and the creation of human
cognition, in its course, are as firm a part of science as the role
of gravity in the motions of the heavenly bodies. If you don't know
that, you should read an honest elementary textbook on the subject
of evolution. Finding an honest one is not so easy, because there
are thousands of dishonest ones. But they are tracts and not
textbooks. I should add that if anyone finds good evidence that
evolution as biology now describes it didn't happen, he will be a
world hero not just of theists but of science too.
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Second argument: well, evolution
happened more or less as biology says, but doesn't work the way
biology thinks it does, through a materialist blind algorithmic
process of natural selection. It works because the whole sha-bang
was designed. Maybe also because the designer cares and intervenes
regularly, now as in the past shaping the outcomes. Since there is
intelligent design, human cognitive performances depend upon
intelligence, something outside of the brute interaction over time
of genes and environments. It may be that serious philosophers
haven't thought this way for a long time. But lots of other people
do. Lots of other people do think that mind is separate from body. I
don't propose to use my few minutes to give a history of this
ancient class of arguments. Suffice it to say that they go back
before William Paley, before Descartes, before Thomas Aquinas, but
as well straightforward to today in applauded promotions by, say,
Phillip Johnson, Michael Behe, and others among the
neo-creationists. But their arguments, like all preceding versions
of the argument from design, are false. Please don't take my word
for it, or even that of a normally careful scholar like Robert Bork,
who believes the argument from design. Just point your web browser
to "Beahy's empty box" for full text literature that dissects the
swindles of experiment of intelligent design theory. So that one is
dismissable too. I am sorry, it would have been nice to get
everybody into the tent--religion and science, God, Wilson, Richard
Dawkins, Ecstasy, and Darwin--poor old Darwin--but it doesn't work.
There is nothing about the design of living things that isn't
explained under any reasonable epistemology better by modern
evolutionary biology, which Darwin would not recognize anyway, than
by intelligent design. (Wait a bit for the end of these remarks. I
am going to suggest that only Wilson's kind of proposal, rather than
those of the creationist, rather than quantum mysticism, rather than
therapeutic touch and angels, rather than social utopianism, has a
real chance of realizing the noble desideratum, which is to get the
best of religion and of science back together in the same thing.)
Third argument, but wait, maybe it
isn't a noble desiderata maybe it's either a rotten idea, or
impossible in principle what Wilson is proposing, or both. Maybe the
unvarnished materialism of evolutionary psychology is just that
science or advocacy of infanticide, as a normally circumspect Andrew
Ferguson contends in his astonishingly snide account in the
Weekly Standard of Stephen Pinkers' recent book, How the
Mind Works. But let's stick with the claim that as a goal or a
hope, unifying religious, aesthetic, or humanistic cognitive
performances with scientific knowledge is vain; that to accomplish
this, if it were possible, would be not an achievement but a loss.
And among those who have argued this is my distinguished colleague
Richard Rorty, who has stated his position very clearly that
"although advances in biology may someday have greater relevance to
the behavioral sciences, conceivably even to the policy sciences in
the humanities than they do now. We should nevertheless not get on
the bandwagon Wilson is trying to set in motion." Why not? Well,
because for one thing, the disciplines are not fragmented, Rorty
says. Their separateness is a good thing, not a bad thing. There are
just different ways of doing things. The diversity is the great
plus. To make the method and the language of science the core or the
determining language of all knowledge would be a great loss, an
impoverishment, because there are not barriers between the
disciplines, only different folks doing different strokes. People
like Wilson have shown neither that their hopes of unification are
feasible, nor what sort of world would result from unification just
in case it were feasible. And from the point of view of variety, or
perhaps freedom too, there would be less of a world under Wilson's
theme than the one we have. And so Rorty says in short: "I have no
doubt that this hypotheses is true." (And he is referring to
Wilson's hypothesis that every mental process has a physical basis
and is consistent with biology.) "I have no doubt that this
hypothesis is true, but it simply does not follow that knowledge or
culture should become more unified than it is. That is like
inferring from the fact that every workable piece of software has a
hardware realization to the conclusion that we should aim for one
big unified program." Well I hope we are going to talk about one big
unified program in the discussion, but I must confess that this is a
strong argument, as Rorty's arguments usually are. Passing for a
moment on the computer analogy, he is asking for resistance to
imperialism. Who could argue with that--to resist the imposition of
scientific method on quite different forms of life and ways of
knowing. They are concerned with other matters than just
representing physical reality, if there is such a thing. But Rorty
among others applauds the discoveries of Thomas Kuhn, that
supposedly put an end to logical positivism by showing that there is
no such thing as scientific method--no one style and language to be
imposed on anybody. (Anyway, Kuhn showed no such thing. He showed
that in the few cases he chose, drawn from physics, personal and
social factors play a larger part in theory choice than had been
assumed in mainline philosophy of science. And the rules Kuhn
proposed for theory choice don't apply to most science as has been
amply demonstrated since the structure of scientific revolution,
least of all to evolutionary biology.) So the attempt to conciliate
evolutionary psychology with the humanities would not impose a
privileged language on the latter, delegitimating the native tongue.
Nor would the latter give way to the former, anymore than
embryology, my own field of research, gave way to molecular
genetics, with which it had had nothing to do until the 1960s, when
people in both disciplines began to work toward consilience. Both
fields in fact were quickly and splendidly enriched, and the riches
then spread upward to the budding discipline of neurobiology and
downward to hard-nosed biochemistry. So in short, enrichment of
formerly separate disciplines via conscious work toward consilience
has caused no visible loss of diversity or substance or style, has
done no colonizing in the cases that at least I know about. Maybe it
wouldn't be so between biological cognitive science and aesthetics
or ethics, but we don't know that. |
| The fourth big argument of
five is sneering at evolutionary epistemology. The Cambridge
Dictionary of Philosophy has a short but thoughtful entry on
evolutionary epistemology of which Wilson's new book is an example,
although its very long on evolution and very short on epistemology.
In fact, the dictionary antedates consilience by a couple of years,
but it does name as adherents, more or less, in the effort toward
consilience some philosophers like W.V. Kwan. But the dictionary
goes on to report: "Critiques of this position, evolutionary
epistemology, for example Phillip Kitcher, usually strike at the
soft scientific underbelly. They argue that the belief that the mind
is constructed according to various innate adaptive channels is
without warrant. It is but one more manifestation of today's
Darwinians illicitly seeking adaptation everywhere. It is better and
more reasonable to think knowledge is rooted in culture." And that
really does encapsulate the argument, but the dictionary article
goes on to excoriate this position of Kitcher and the critiques.
Kitcher has, moreover since this early rejection of sociobiology as
vaulting ambition, softened his stand very considerably, if not
quite reversed it. I suspect that the timing was taking too
seriously the critiques of pan-adaptationists, first offered by
Richard Lewontin and Stephen Jay Gould, and then by others. But over
time these critiques have failed to show substance, indeed they too
seem to be empty as Daniel Dennett goes to some pain to demonstrate
in Darwin's dangerous idea. |
| Let me thatch on the last
one now. Anyway, the last genre of anti-Wilsonism, I have brought
forth here. This one comes close to being the most serious. I'll
state it this way. Okay, it's fair enough to assume as a working
hypothesis that characteristic human cognitive performances like
ethical norms arose biologically and became fixed because they
conferred selective advantage; that moral codes, for example (and
here I am quoting from a manuscript in press of a colleague Susan
Haack), "are to be judged by their conduciveness to human
flourishing." But in fact moral codes vary enormously from one place
in the world to the next. There are maybe some universals or near
universals, but more commonly there are differences in moral codes
and in ethical norms. Then it must be the case that the common
biological and genetic contribution to the fixation of moral beliefs
and behaviors is very small. Or, if large, the contribution is
deeply obscure and will be impossible to dredge up out of a history
that is unwritten and perhaps unrepresented even for archaeologists.
Now to me, this argument in its broad form, and to some extent
Rorty's argument, as well, have merit. What it says is not that the
bandwagon he referred to is a danger, that it might lead the world
to a world worse than the one we have, but rather that it is
unlikely to go anywhere. It is a difficult argument to upset. To
some of us the achievements to date of sociobiology are already
exhilarating and prognostic of enormous success. And 'some of us'
means, not just me and a few of my friends, but 15 or 20 very
distinguished cognitive scientists all the way from the biological
end to the humanities end. But to others, some of them as well
qualified in the relative science, the achievements to date are not
much, consisting more of plausibilities than of proofs. This latter
judgment I see as profoundly wrong, but I cannot prove it wrong. Not
yet. But I say Wilson's making the case is quite aside from its
brilliance as scholarship and writing a major contribution to
intellectual work. It lays out a program that I believe is not only
eminently worth trying, but that will be tried, is indeed being
tried. Opportunists there are plenty on the science side, and as
Richard Rorty himself has written: "Wilson's book did nothing to
change my antecedent belief that any humanist artist or social
scientist who comes up with a plausible idea about how to get
biology into her act is in an excellent position to get a grant and
make a name for herself." And I agree, there are currently strong
prejudices in the humanities and social sciences against giving in
to science, to scientism, to socio-biology, to other words that have
to be surrounded with sneer quotes. I know those prejudices exist;
after all I was a provost. They will vanish in due course, because
it will become apparent even in English departments that there are
better ways to deal with beauty than to decide that it is either
ineffable or doesn't exist. It will become obvious that since
religion, for example, isn't going away and some of its consequences
are of enormous value for civilized life since, and since
evolutionary science isn't packing it in and its reach into the
origins and mechanisms of mind grows longer and stronger everyday,
that we have two choices. One is for the two to continue at war in
the vain hope that on each side that the other side can be defeated.
The other is for religion to be understood, not only for its current
values but also for the mechanisms of its origin and fixation in
human behavior, so that the good parts of it can be honored and
reinforced. In the latter, the two parties come in from the cold
under the big top of humanity, under the aegis of inquiry, which is
to be found as the Enlightenment indeed expected, not just in
natural science but everywhere that honest investigation is
conducted. |
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