In preagricultural societies, social roles were few and were easily predicted for each phase of a person' s life  Accordingly, interpersonal relations, although not always pleasant or fair, were stable and predictable  Modern society, on the other hand, has thousands of different social roles  Technology and consumerism require that each of us fill highly particularized niches, and these niches are differentiating at an astonishing pace
Ttherefore,
the most important difference between modern and preagricultural societies is the variety and type of social roles permitted in each