I feel like my original comment fully addresses your point, but I will restate here in a shorter form for your convenience: 1) bigger population means more chan

I feel like my original comment fully addresses your point, but I will restate here in a shorter form for your convenience: 1) bigger population means more chances a potential genius is born in the right circumstances 2) we can have a smaller population if everyone lives at western standards (and then genetics becomes the bottleneck)