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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Because humans are communal. They formed tribes and communities, and each person had their job, so it wasn’t necessary for survival for everyone to be perfect. Maybe someone near sighted would be a terrible hunter, but they would be excellent at building fires, cutting meat, making weapons , farming, and weaving clothing, etc.
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