Theoretical physicist Geoffrey West explains:
[O]ne of the great things about cities is that it supports crazy people. You walk down Fifth Avenue, you see crazy people. There are always crazy people. Well, that's good. Cities are tolerant of extraordinary diversity. … This is in complete contrast to companies. … Indeed, if you go to General Motors or you go to American Airlines or you go to Goldman Sachs, you don't see crazy people. Crazy people are fired. Well, to speak of crazy people, is taking the extreme. But maverick people are often fired.