Scott wrote: << Isn't the existence of Garden of Eden configurations an easy proof of non-existence of Adam & Eve configurations?
Yes. Duhhhhhh. << FWIW, it feels like a direct Adam/Eve nonexistence proof might be simpler than a direct Garden of Eden existence proof.
Good point. Now let me make a feeble attempt to rescue the Adam & Eve question. Consider those patterns each having an infinite sequence of ancestors. Is there a starting pattern for which every one of these eventually appears somewhere among its descendants? (Alternatively, consider each pattern that, for every N in Z+, has a sequence of N ancestors. Same question.) --Dan ________________________________________________________________________________________ It goes without saying that .