• (Game theory is) essentially a structural theory. It uncovers the logical structure of a great variety of conflict situations and describes this structure in mathematical terms. Sometimes the logical structure of a conflict situation admits rational decisions; sometimes it does not.

    "Prisoner's dilemma: A study in conflict and cooperation" by Anatol Rapoport, Albert S. Chammah, Ann Arbor: The University of Michigan Press, (p. 196), 1965.