Indeed, much of the social activity of individuals today can be described as search behavior—a relentless process of social discovery in which one seeks out new friends to replace those who are either no longer present or who no longer share the same interests. This turnover impels people, and especially educated people, toward cities and into temporary employment patterns. For the identification of people who share the same interests and aptitudes on the basis of which friendship may blossom is no simple procedure in a society in which specialization grows apace. The increase in
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