M i t r a

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—Ed 17 ^{(Talk / Contribs)} 04:29, 19 January 2009 (UTC)

Hi

Thanks for your message. Hope we can all talk usefully and learn from each other. Ars longa, vita brevis, I think the saying goes; to which I might add "Also scientia". Cheers, Bill Wwheaton (talk) 00:46, 20 January 2009 (UTC)

Re your question on cave paintings of 19 Jan on Talk:Life, in my suggested definition, one must distinguish between the organism, and the surrounding environment it which it lives. Admittedly this can be difficult to do without some arbitrariness or ambiguity (which is a problem, needing work). But having made that division and drawn that boundary, one must estimate the information content (in bits, say) in the organism necessary to sustain its necessary functions of protecting and reproducing its core information. Similarly, one must estimate the information necessary to define the minimal environment necessary for the organism to function successfully in it. Then the dimensionless ratio of those two is the interesting number. If it is small, the proposed bioform is not very lifelike; conversely, if the ratio is large, the proposed object has a strong case to be called "life". I think the cave painting hardly qualifies at all, because it cannot actively protect its core information or reproduce it, unless you include the artist as part of the organism (it which case it obviously becomes pretty lively, but not just "a painting"). If you say just the painting is the organism, and the artist is part of the environment, then the ratio is very small, because the information in the artist is huge, and in the painting much much smaller. Wwheaton (talk) 19:47, 22 January 2009 (UTC)

Life

Allright. Peace. -BatteryIncluded (talk) 04:46, 21 January 2009 (UTC)

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