I don't know. But there's no reason to think that genetics is the only possible answer.
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Replying to @yarbsalocin @FuckerLocust and
They have lower cranial capacities, too. Also genetic of course.
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Replying to @gcochran99 @FuckerLocust and
"of course" is a favorite phrase of yours, I'm guessing.
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Replying to @yarbsalocin @gcochran99 and
I'm curious what possible *non* genetic cause could result in smaller cranial capacities. "Hearing mean things makes your skull grow smaller" is the alternative and is insane.
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Replying to @CovfefeAnon @gcochran99 and
That's actually not the alternative and you'd have to be an idiot to think otherwise.
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Replying to @yarbsalocin @gcochran99 and
Ah, must be really tight fitting hats then. Unless you have a better non genetic explanation...
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Replying to @yarbsalocin @gcochran99 and
Ah yes, the type of nutrition that leaves you taller and heavier and more likely to become a pro athlete but leaves you with a smaller skull! Of course! Just check the skull sizes of NBA players and you'll find that this doesn't hold.
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Replying to @CovfefeAnon @gcochran99 and
Are there a lot of Aboriginal Australians in the NBA? I guess I haven't watched a game recently.
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Replying to @yarbsalocin @gcochran99 and
You may have noticed that it's full of a demographic that *must* be malnourished by your hypothesis. Somehow their nutritional deficits only show up in skull volume - such a bizarre mystery.
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Of course, once you rule out nutrition as the cause of skull volume differences for one group and admit no other possible cause other than genetics, it becomes certain that those same differences in other groups are also caused by genetics. Your example group makes this clear.
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