For example, in humans it’s theorized that women with wider hips have a better chance of a successful birth, therefore men are more attracted to wide hips. Like how can my brain know that wide hips is a good genetic trait and pass this attraction to wide hips to my offspring?
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Turn it around the other way: Organisms which *weren’t* more attracted to traits which improve survival…were less likely to have surviving children.
Fast forward a few million years of this, and all of the surviving organisms are the descendants of the ones which *were* attracted to features that improved survival….because they had improved likelihood of surviving.
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