Key points are not available for this paper at this time.
The problem of this paper is one of the most subtle and difficult in the whole of social dynamics. It may very well be insoluble with the present techniques of social science. The principal purpose of this paper, therefore, is to make clear the nature of the problem and the sort of things we might have to know if we were to solve it.
Kenneth E. Boulding (Sat,) studied this question.