MARGOLIS, Howard. American, b. 1932. Genres: Environmental sciences/Ecology, Economics, History, Philosophy, Politics/Government, Public/Social administration. Career: Science, Washington, D.C., Washington editor, 1960-62; U.S. Department of Defense, Washington, D.C., staff assistant to the secretary and deputy secretary of defense, 1962-64; freelance journalist in Washington, D.C., 1964-66; Institute for Defense Analyses, Washington, D.C., senior staff member, 1966-72; Massachusetts Institute of Technology, Cambridge, research fellow at Center for International Studies, beginning in 1972; University of Chicago, Chicago, Ill., senior lecturer, 1985-89, professor, 1989-. Visiting scholar at Russell Sage Foundation, 1981-82; visiting member of Institute for Advanced Studies, Princeton, N.J., 1982-83; visiting lecturer at University of California, Irvine, 1984-85. Publications: Selfishness, Altruism and Rationality: A Theory of Social Choice, 1982; Patterns, Thinking and Cognition, 1988; Paradigms & Barriers, 1993; Dealing with Risk, 1996; The Discovery of Discovery, 2001. Address: Graduate School of Public Policy, University of Chicago, Chicago, IL 60637, U.S.A.