Prager: "There's no secular argument against adult incest. Brother and sister want to make love, what's your argument? That they're going to produce mentally ret0rded offspring? That's nonsense. It takes many generations of inbreeding to do that."
Prager: "There's no secular argument against adult incest. Brother and sister want to make love, what's your argument? That they're going to produce mentally ret0rded offspring? That's nonsense. It takes many generations of inbreeding to do that."
As far as I understand "it's weird" is an actual psychological thing where people of roughly the same age who grow up together are less likely to be sexually attracted to each other, and the hypothesis is that this is an evolutionary advantage because it makes people seek out mates they are not closely related too.
The Westermarck effect. It was documented a fair bit among children in the kibbutz system, where the people growing up in it didn't want to marry each other because they saw them as siblings.