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Oct 28, 2019 at 14:12 comment added Peter Shor I added my comment on sleepless's answer to my answer, making it more self-contained.
Oct 28, 2019 at 11:05 history edited Peter Shor CC BY-SA 4.0
Added my comment below sleepless' answer to my answer
Nov 9, 2010 at 9:27 comment added John Baez Yes, that's the lesson to be learned.
Nov 9, 2010 at 9:25 comment added Hans-Peter Stricker Is this the lesson to be learned: The possible emergence of a pattern in a cellular automaton with a given initial pattern is undecidable iff the automaton is complex enough to be able to simulate a universal Turing Machine?
Nov 9, 2010 at 0:49 vote accept Hans-Peter Stricker
Nov 9, 2010 at 0:49 comment added Hans-Peter Stricker Accepted for the comment on sleepless' answer!
Nov 9, 2010 at 0:02 history answered Peter Shor CC BY-SA 2.5