The Giant Myth of Ephebophilia (revised)

Everybody believes in it, despite the total lack of evidence.
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Ephebophilia is simply not real. (Wikipedia cites Blanchard, who cites Krafft-Ebing, who doesn't mention ephebophilia at all. Wikipedia is wrong.)

and just as a matter of common sense: there are no men sexually attracted to 16-year-olds who are not also attracted to 20-year-olds.

It's a ridiculous concept on the face of it.