The core problem of utopias is that they take one dimension of human character and push it to its extreme. We are both competitive and cooperative beside many o

The core problem of utopias is that they take one dimension of human character and push it to its extreme. We are both competitive and cooperative beside many other things. On top of that, the same person can become/look as if more competitive or more cooperative in different groups. That is, even in a group of heavily cooperative people the one with more competitive tendencies will be described as competitive. This may even results this guy being expelled from the group. Many novels and movies use this to build their story. In a "bad" world a guy saves everybody or in a "good" world things go wrong because one of them starts doing "bad" things. The modern approaches we take give more emphasis to the differences of people in both work environment and society.