There's was a great article I red once, maybe on Less Wrong (their site search sucks, I can't find anything) about a rare brain disorder. I think it was geneti

There's was a great article I red once, maybe on Less Wrong (their site search sucks, I can't find anything) about a rare brain disorder. I think it was genetic and only hit the more primitive parts of the brain, while the most recently evolved and most rational part were unaffected. Would this make you extra smart? It turns out no, but it does seem to make you pathologically friendly what ever that means. So the human brain is in fact a carefully balanced combination of reason and instinct. Remove the primitive animal instincts and emotions and the result is not super smart, but surprisingly dumb. And this means a super intellect can not simply be pure reason or just a lot of reason. It will not at all be easy to come up with smarter then Human AI. And what if when we do have super smart AI, it takes a zen attitude towards existence, and just doesn't care much for existence itself? I don't mean our existence, but it's own. After all there is a sad correlation between higher then average human intellect and depression and suicide.