I don't necessarily mean the researchers themselves. > They allow that it could be nutrition, toxin exposure, cultural, or any number of other factors. Someon

I don't necessarily mean the researchers themselves. > They allow that it could be nutrition, toxin exposure, cultural, or any number of other factors. Someone, just weeks ago, here on HN cited Rushton at me to point out that it really was genetic factors. Which is not clear to anyone except maybe Rushton.