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Life: Evolution From Randomness

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Uploaded by on Jun 15, 2009

Starting with a given screen pattern (in this case, randomly generated), apply the following four rules
to obtain a new pattern:

Turn off (or leave off) any pixel that is in contact with less than 2 other pixels that are turned on ("it dies of isolation").

Turn off (or leave off) any pixel that is in contact with more than 3 pixels that are turned on ("it dies of overcrowding").

Turn on (or leave on) any pixel that is in contact with exactly 3 pixels that are turned on ("it remains alive or is born").

Leave unaltered any pixel that is in contact with exactly 2 pixels that are turned on.

Repeat the above procedure, generating a sequence of screens; usually a stable (stationary or repeating) pattern is eventually achieved.

This is Conway's Game of Life, developed by British mathematician John Horton Conway in 1970.

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  • The local symmetric shapes are interesting (groups that forever alternate between broken cross and broken circle).

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