IS POINCAREAN NONLINEAR DYNAMICS THE ALTERNATIVE TO THE SELECTION THEORY OF EVOLUTION

Here follows the latest entry in the symposium begun by James Barham i n his ''A Poincarean Approach to Evolutionary Epistemology,'' Volume 1 3, Number 3, and continued with commentary by Donald T. Campbell, Kai Hahlweg, Jagdish Hattiangadi, Franz Wuketits, Edward S. Reed, Jeffrey S. Wicken, Jesse Hobbs, David Stump, F. Eugene Yates, Rene Thom, Rober t Rosen, Christine A. Skarda, and Paul Levinson in Volume 14, Number 2 , and replied to by James Barham in his ''From Enzymes to E=mc2: A Rep ly to Critics'' in volume 15 number 3 of this Journal. I would point o ut to readers who may be unfamiliar with the specifics of this earlier discussion that Khalil's assertion immediately below that Barham's co nstruct is ''anti-Darwinian'' has itself been a key issue of contentio n, with several commentators arguing that Barham's work is elaborative or reparative rather than contravening or destructive of the Darwinia n program. Barham himself allows that his approach is ''on some level' ' compatible with Darwinian theory, though he seems to prefer explorat ion of the ''very real differences'' between his and the neo-Darwinian approach-e.g., Barham. 1992, p. 254.-PL