Re: [math-fun] Life's Garden of Eden

acw> I read this, and it is, unfortunately, not the discussion of the proof that I remembered. Could it have been that Conway presented the proof at the talk I went to? I know it was discussed. His "parlor trick" around then was to challenge people to draw Life patterns, and he would construct a predecessor. He was uncannily good at it. Record small GoE: http://homepage.tudelft.nl/37b0y/ Just confirmed by Achim Flammenkamp. --rwg