Labels:bulletin board | reckoner | window OCR: antibody molecules that are better and better "fits" against invaders By abstracting the essential features ofa Darwinian process from what is known about species evolution and immune responses we can see that any "Darwin machine" must have six properties First it must operate on patterns of some type; in genetics they are strings of DNA bases, but patterns Of brain activity associated with thought might qualify Second copies are made of these patterns (Indeed that which is reliably copied defines unit pattern. Third patterns must occasionally vary. whether through mutations copying errors ora reshuffling of their parts. Fourth variant patterns must compete to occupy some limited space (as when bluegrass and crabgrass compete for my backyard) Fifth, the relative reproductive Seesses of the ...
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