Abstract
The term "public" has two possible concepts. One signifies a phenomenon which is "open to view" and pertains to a generalized body of persons. ("public" in a wide sense). Another one signifies the contexts which express the functions of public institutions. ("public" in a narrow sense). Applying these two concepts, we recognize three types of social behaviour:private behaviour, public behaviour in a wide sense, and public behaviour in a narrow sense. We introduce "identity of the supplier with the related users" as the fundamental organization rule for public institutions and some middle organizations. Through analyzing the patterns of interaction between the above mentioned social behaviour, we attained both comprehensive understanding of the characteristics of each economic sector in our society and the perspective of justifiable policies relating to "public".
