I'm not going to waste my time and energy trying to refute someone who believes black people are not as clever as white people, and wraps it up in nice words. Go through his comments or any article on HN that mentions race. He tries to make the same point over and over again.

I'm not interested in any kind of debate about this. It just wastes my energy and brings me nothing. I will just point out that that's what he does when he chooses to do it. The onus is not on me to prove that black people are not dumb.