In any potential collectivity, members have different interests, capabilities, preferences, and so forth. They want to accomplish different things. However, to achieve some of these diverse ends, concerted, interdependent actions are required.

Karl E. Weick. "Group Processes, Family Processes, and Problem Solving," in J. Aldous, T. Condon, R. Hill, M. Straus, and I. Tallman, eds., Farnily Problem Solving: A Synzposizim on Theoretical, Methodological, and Substantive Concerns. Hinsdale, Ill.: Dryden Press, 1971, p. 26