Experts

Reading the comments section of that Drallasta guy, he clearly doesnt understand the debate.

He seems to think there are obvious environmental reasons why blacks underperform (there are not) and we are just citing GWAS studies to preserve the idea of their inferiority.

Really, there arent obvious environmental barriers that account for much of the gap and Kraut is using the fact that molecular genetics is too young to have corroborated the argument either way to essentially say "you dont know" ie Kraut is arguing with a 'god of the gaps' style argument creationists would use

This is just Kraut buffering his authority by bringing in what are really random scientists, not population or behavioral geneticists.