"My approach to rationality accomodates the historians' 
contentions that many of those who were on the 'wrong side' were 
epistemically virtuous in at least some respects.  Is it too 
ecumenical?
   [...]
   "The label 'irrational' is most tempting when behavior that 
appears to indicate the pursuit of nonepistemic ends is 
accompanied by professions of devotion to the ideal of cognitive 
progress.  Sometimes people's decision making exhibits deviations 
from progress-promoting processes that are hard to explain except 
by supposing that the cognitive goals they explicitly honor are 
not those that motivate their decisions.  The hallmarks of such 
cases are varieties of inflexibility, blindness or deafness.  Thus 
when scientists continue to defend their assertions by rehearsing 
the same arguments, even when they have been presented with 
criticisms and counterarguments that their contemporaries take 
extremely seriously, when they neither reply to nor even 
acknowledge such counterarguments, it seems that we must either 
credit them with insights that are denied to the multitude or else 
suppose that the conclusions the maintain are too vauable to be 
risked by engaging in any kind of dialogue.
   "Consider, in this light, the case of 'creation scientists.'  
Ever since this group of critics of Darwinian evolutionary biology 
achieved prominence, champions of orthodoxy have wanted to label 
them as 'pseudoscientists.'  The apsychologistic character of 
twentieth-century philosophy of science influences the formulation 
of the charge.  If creation scientists are pseudo*scientists* that 
must be because they defend a pseudo*science*, a doctrine that can 
be distinguished from genuine science by its logical 
characteristics.  Philosophers shift uneasily at this, because one 
of the great morals of the demise of logical positivism was the 
difficulty--or, to put it bluntly, apparent impossibility--of 
articulating a criterion for distinguishing genuine science (Quine 
1951, Hempel 1951).  Moreover, a sober look at the history of 
paleontology will reveal that the creationists effectively espouse 
what was once scientific consensus, not a scientific consensus 
that was overthrown by Darwin in 1859 but one that began to erode 
in the early years of the nineteenth century.
   "The apsychologistic point of view has matters exactly 
backward.  There is nothing intrinsically unscientific about the 
doctrines--no reason to castigate Thomas Burnet, or others who 
held them, as pseudoscientists.  The primary division is a 
psychological one between *scientists* and *pseudo-scientists*.  
The behavior of creation scientists indicates a kind of 
inflexibility, deafness, or blindness.  They make an objection to 
some facet of evolutionary biology.  Darwin's defenders respond by 
suggesting that the objection is misformulated, that it does not 
attack what Darwinists claim, that it rests on false assumptions, 
or that it is logically fallacious.  How do creation scientists 
reply?  Typically, *by reiterating the argument*.  Anyone who has 
followed exchanges in this controversy or has read the transcripts 
of a series of debates sees that there is no adaptation to any of 
the principal criticisms.  One important example among many is the 
creationist use of the second law of thermodynamics.  For nearly 
twenty years, the major exponents of creation science have been 
declaring that the second law of thermodynamics is incompatible 
with the evolution of life.  Creationists have been in the 
presence of people who have given lengthy critiques of their 
objection and there is substantial evidence that their eyes have 
wandered over some of the pages on which such critiques have been 
printed.  How has their thinking adapted to these critiques?  
Apparently not at all, for they make no replies to them and 
continue to present their ideas in exactly the same ways."
--- Philip Kitcher, _The Advancement of Science_, 1993, Oxford
University Press, pp. 195-196.
Jim Lippard              Lip...@CCIT.ARIZONA.EDU
Dept. of Philosophy      Lip...@ARIZVMS.BITNET
University of Arizona
Tucson, AZ 85721