If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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Actually we have empirical evidence that women's premarital sexual adventures damage their ability to form stable marriages:
http://socialpathology.blogspot.com/2010/08/defining-slut.html
When our allegedly unenlightened ancestors shamed sluts, shunned bastard kids and married their daughters off as young virgins, it turns out that they knew their business after all.
BTW, I find it curious that at least some of us consider paleonutrition a guide towards a modern healthy diet, but then turn around and call paleocognition bad names like "cognitive biases."
No, we have only some correlations where obvious third factors (e.g. IQ) are involved. If you want to take this approach, just being black strongly "damages ... ability to form stable marriages".
It seems that "correlation != causation" hasn't been repeated enough X-/
P.S. Not to mention that "stable marriages" doesn't look like a terminal goal to me. If that's all you want, just forbid divorce.