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In general it's not necessarily about "skill and charisma" and can also be about emotional connection, being in a particularly hot situation, or a lot of other contextual things that can help (and also there are many that can hurt).
I've got my doubts as to whether the gender split is actually as strong as we treat it as (I spent this entire book going "Yes, the thing you are describing as the characteristically female response is *exactly* how sex works for me) but it's likely at least statistically true.
i suspect it's going to be similar to other psychological traits where there are normal distributions with somewhat offset means, which results in a lot of overlap in the bulk of the distribution & absolute domination of each gender at their respective ends of the distribution
Seems plausible yeah
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