ABSTRACT
First of all let me say that I realize I am offering comments on a subject that is outside my own speciality. Sociologists and political scientists may at first resent this impertinence. Yet it seems to me to be valuable for workers to cross the boundaries from time to time, provided that they realize (as I do indeed) that their remarks must inevitably appear naïve to those who know the relevant literature and who are accustomed to a professional language of which the intruder is ignorant.
