You're right, I should've added a disclaimer. Of course they're not mutually exclusive, and there's no clearly defined border. I was speaking in generalisms to get the point across, but it's somewhat more complicated. Basically, I think that the worst mistakes are made by incapable people in responsible positions, something which happens all too often. Just turn on the TV and look for anything politics related. In many cases, people who get elected mostly know how to get elected, not how to run a country. They might not be idiots, getting elected is a good way to gain money, but they're usually incompetent at their job. Traits like stubborness, slow learning and inability to see their own mistakes only make this worse. An intelligent, but incompetent person would realize he isn't doing a good job and either delegate most of the responsibility to people who know how to do it, try to learn how to do it right, or resign. An incompetent fool, on the other hand would act as if nothing was wrong, and/or act like it was not his fault. That's as close to a definition as I can get.