Funny how environment is continually dropped from the conversation of race in favor of heritability. You note that there is now East African dominance in marathon running. That has not always been the case however. As East Africans were provided opportunity to compete on a level playing field their talents whether inherited, conditioned by demand, and/or environmental were demonstrated. Now there is intense competition and selection pressure for the fastest East African runners. West Africans and East African are of the same race, but differ in the case of marathon outcomes. Why can’t this be true for intellect?
Discrimination is not some leftist fantasy. Black Americans have been systematically deprived of quality environments for over 400 years. I am talking about truly horrific intellectual deprivation from making it illegal to read during slavery to living in highly polluted sections of segregated cities today.
When we talk about intellectual disparities history needs to be part of the conversation.