Combining anthropology, archeology, and evolutionary theory, Paul E. Minnis develops a model of how tribal societies deal with severe food shortages. While focusing on the prehistory of the Rio Mimbres region of New Mexico, he provides comparative data from the Fringe Enga of New Guinea, the Tikopia of Tikopia Island, and the Gwembe Tonga of South Africa. Minnis proposes that, faced with the threat of food shortages, nonstratified societies...