hicago and Provost, Field Museum, (discoverer off 71kiaalik roseae. 14. Mary Smart-head, smart family foundation IS. Sander van der Leeuw, Prof. Anthropology, Director, School of Human Evolution and Social Change, Director Global Inst. of Sustainability, Director Complex System Dynamics, ASU. EFTA_R1_0

ful, then this should allow a more powerful theory of economics. *Research Centre, King’s College, Cambridge CB2 1ST, U.K. Present address: Dept. of Anthropology, University of Utah, Salt Lake City, UT 84112, U.S.A. Published as pp. 231-252 in Characterizing Human Psychological Adaptations, edited by G. Bock