Remember, your only job as far as natural selection is concerned is to have offspring and have them survive long enough to repeat the cycle. Old people with bad eyesight just have to be able to keep the kids and grandkids alive.
Bad eyesight could have a positive effect on generating offspring because you can't tell how ugly your partner is. Or that about 30% of the time you aren't having sex with your partner but someone else with poor eyesight instead.
Don't even need to be old. Don't need to be able to see that good to know the red blotch that smells like the good berries is probably the good berries, and the antelopeish splotch might be a good thing to poke with your pointy stick of choice.
Remember, your only job as far as natural selection is concerned is to have offspring and have them survive long enough to repeat the cycle. Old people with bad eyesight just have to be able to keep the kids and grandkids alive.
Bad eyesight could have a positive effect on generating offspring because you can't tell how ugly your partner is. Or that about 30% of the time you aren't having sex with your partner but someone else with poor eyesight instead.
You'd be having sex with a sneaky fucker
Don't even need to be old. Don't need to be able to see that good to know the red blotch that smells like the good berries is probably the good berries, and the antelopeish splotch might be a good thing to poke with your pointy stick of choice.