What's the meaning of evolution? 
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I suppose it is. Retry: Stable structures last over time according to physical, chemical, and biological laws http://wikipedia.org/wiki/Survival_of_the_fittest#Tautology.3F …
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or just physical laws for short. thanks for helping me clarify this thought
End of conversation
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try: stable structures are self selecting (regardless of underlying phys laws)
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define "self-selection"
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