Yes? Like, who do you think designed them? Who went and put their eyes there?
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Evolution is only even *possible* because there's a certain baseline level of diversity in alleles made possible by ongoing random mutations that stick around for long periods of time
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People get the timescale twisted in their heads, like the existence of the allele has to happen well before the actual event causing selection happens If it didn't happen until then it would be too late, there'd be nothing to select
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It's not objective, no, but it does generally tend to push towards the survival of a species, since traits that are detrimental to the survival of a species generally don't last very long.
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