The guy at about 35:00 described it perfectly: The rational part of his brain that would kick in and prevent you from killing someone in a moment of anger is missing in him. His brain has faulty wiring. We all get angry but with him, there isn't anything to rein it in. There is a feedback loop that is missing.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Albert Einstein
Albert Einstein