The whole program of evolution seems to be to diversify, because in diversity there is strength. And if you apply that on a social level, then you get something like anarchy. Everybody is recognized as having their own abilities, their own particular agendas, and everybody has their own need to work cooperatively with other people. So it's conceivable that the same kind of circumstances that obtain in a small human grouping, like a family or like a collection of friends, could be made to obtain in a wider human grouping like a civilization.