The social sciences must be biological ones, owing simply to the fact that they focus on the causes and effects of the behavior of members of a biological species, Homo sapiens. Our improved understanding of biology as a science and of the biological realm should enable us therefore to solve several of the outstanding problems of the philosophy of social science. The solution to these problems leaves most of the social and behavioral sciences pretty much as it finds them, though (...) it does provide improved understanding of their scope, limits, and methods. Key Words: biology • natural selection • Darwinism • models • narratives • history. (shrink)