I'm not sure I follow. Are you talking about Diamond's book? Diamond not only did not attribute the course of human history to genetics or phenotypes, he has ar

I'm not sure I follow. Are you talking about Diamond's book? Diamond not only did not attribute the course of human history to genetics or phenotypes, he has argued against such an explanation on multiple occasions. He attributes the higher development of Eurasia to geographic features: an environment more conducive to agriculture, and has a large amount of land in the latitudes conducive to building dense urban centers, among other things. This is why the allegations of racism hold little to no water: by explaining these disparities with geography, the book is a decisive counterargument to the narrative of genetic superiority.