I think it’s less that it’s impossible but more that we don’t have any clue as to what causes differences among groups and many people use such measured differences as evidence for pretty deplorable ideas. There’s much more evidence for social determiners than anything biological. Everyone outside of Africa shares a single ancestor 20,000 years ago. There’s far more genetic diversity within Africa than the rest of the world. That alone is often enough to disprove many theories regarding racial differences since our intuitive understanding of “genetic difference” is so flawed.
Past research has a eugenicist bias because early statisticians were eugenicists seeking evidence for the ideas. I would argue that’s why the social determiners research is valuable to help offset that.
> I think it’s less that it’s impossible but more that we don’t have any clue as to what causes differences among groups
I think we have a lot of clues, but scientists who dare say so get heavily censored by largely left-wing media and academics. Even in this forum my comment above got heavily downvoted and flagged.
> Past research has a eugenicist bias because early statisticians were eugenicists seeking evidence for the ideas. I would argue that’s why the social determiners research is valuable to help offset that.
Current bias goes clearly far in the opposite direction, which is bad. There is no "offsetting" with the past which would make an existing bias less bad.
It's closer to 70,000 years. If not, then explain the Australian Aborigines.