[Doctor Stochastic]

He basically had to dispose of evolutionary theory (which would predict racial differences in intelligence)

Numbers on the table, please. In what way does evolutionary theory predict anything about intelligence? Show your work.

[r9etb]

In what way does evolutionary theory predict anything about intelligence? Show your work.

You miss the point: unless the theory of evolution excludes intelligence from the set of traits that can evolve (which it does not), then the theory of evolution would lead one to predict differences in intelligence that correspond to genetic divergence. Human intelligence is in fact theorized to have evolved.

[VadeRetro]

In what way does evolutionary theory predict anything about intelligence?

What evolutionary theory seems to say now is that humanity, for all its outward differences, isn't very genetically diverse at all. By most molecular measures we're the fruits of a rather recent radiation out of Africa. Our ancestry was genetically bottlenecked some 100-200K years back. Thus, differences between subgroups in average intelligence might exist but should not be large. There hasn't been time.