>>12638887Because we are so god damn identical genetically. It takes a little more understanding of basic genetics, biochemistry, and cellular biology to realize that just because things look "different", act slightly "different", and having various averages of intelligence, they can still be super genetically related and thus, the same species. It's just plain factually wrong to try and classify various barely diverged people groups as different "subspecies". Plus, the implication of such classifications can and will lead to unwarranted discrimination, atrocities, etc.
As a biochemist and geneticist, it just baffles me how fucking stupid and uninformed the average person is on these topics. Old systems of physiology differences for classification of different species is an old and weaker classification system, that oftentimes had very little basis in raw genetics.