Given natural selection is true, why do we still have genetic eye sight issues? Because I would think bad eye sight would get you killed (or at least the inability to eat) in a hunter gatherer society.
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100,000 years ago probably made a difference and then with the bad eyesight would have a harder time and so natural selection would start to breed it out or at least reduce it,
As humans develop with compassion and family units people would be taking care of family members with disabilities unless they became too big of a burden.
Now we have glasses and we think girls with glasses are cute and then we make babies that need glasses. So now it’s probably going in the other direction.
Another example is teeth, people whose teeth went bad early, we’re unbelievably crooked, today we have braces and dentist so there’s no breeding bad teeth out.
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