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originally posted by: StanFL
a reply to: nonjudgementalist
I don't think it works the same way nowadays as it did for the last billion years. In a petri dish, it is the bacterium that reproduces the fastest that dominates the culture; no more fitness testing.
Probably weather, climate.
Outsides stresses (there's that word) create environments where a species either adapts or dies. In order to adapt, you have to evolve.