Lowering genetic diversity tends to narrow the bell curve, possibly lowering the number of idiots, but also lowering the number of geniuses, especially super-geniuses, by a (probably smaller) amount.
Civilization is mostly pushed forward by geniuses.
Lowering genetic diversity tends to narrow the bell curve, possibly lowering the number of idiots, but also lowering the number of geniuses, especially super-geniuses, by a (probably smaller) amount.
Civilization is mostly pushed forward by geniuses.