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[–]happysmash27 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (1 child)

Sex tends to roughly follow a binary, even though there are many, many exceptions, but race is very obviously a human concept since there is much too much mixing for any of the so-called "races" to truly be separate.

[–]wizzwizz4 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

Which is why it's surprising that anything at all is correlated with race. How much of that is social, cultural, genetic?