(important) (alternate theory of man)
Man adapts through ideas. Speciation in man is determined by his ideas: philosophical, normative and institutional. Man’s genes adapt largely through changes in distributions of reproductive desirability, aggression, intelligence, and impulsivity. These differences do not show up in our current level of genetic study, yet they determine our futures, because our futures are determined by how we compete with one another’s tribes.
Different civilizations are different species. This defeats the genetic argument to the similarity of man. Forever.
That argument is dead. This one reigns.
Source: (4) Curt Doolittle