I think if you read the thread history you'll see that I said nothing of the sort. But a conclusive answer to the question of how much direct genetic influence there is on intelligence (outside of disease/disability genetics) is very much not supported by current evidence. It's an open question. Right now: it's not looking great for the hereditarians (define them as "there is a very strong genetic component to cognitive ability"), but that could change as molecular genetic methods improve. Nobody knows.