I think the problem with people like this is that they are so stupid that they
have no idea of how stupid they are. You see, if you are very, very stupid,
how can you possibly realize that you are very, very stupid? You have to be
relatively intelligent to realize how stupid you are. There's a wonderful
bit of research by a guy called David Dunning at Cornell, who's a friend of
mine, I'm proud to say, who's pointed out that in order to know how good you are
at something requires exactly the same skills as it does to be good at that