I mean, nationality is obviously an enviromental factor, right? There's no 'german gene'. Ethnicities like 'French' don't actually exist in genes. So even if th

I mean, nationality is obviously an enviromental factor, right? There's no 'german gene'. Ethnicities like 'French' don't actually exist in genes. So even if there is this nation-by-nation IQ variation, it shouldn't matter if you let people live where they want.