A founder of and leading thinker in the field of modern ethnobiology looks at the widespread regularities in the classification and naming of plants and animals among peoples of traditional, nonliterate societies--regularities that persist across local environments, cultures, societies, and languages. Brent Berlin maintains that these patterns can best be explained by the similarity of human beings' largely unconscious appreciation of the natural affinities among groupings of plants and animals: people recognize and name a grouping of organisms quite independently of its actual or potential usefulness or symbolic significance in human society. Berlin's claims challenge those anthropologists who see reality as a "set of culturally constructed, often unique and idiosyncratic images, little constrained by the parameters of an outside world." Part One of this wide-ranging work focuses primarily on the structure of ethnobiological classification inferred from an analysis of descriptions of individual systems. Part Two focuses on the underlying processes involved in the functioning and evolution of ethnobiological systems in general.

What is it about human nature that makes our species capable of thinking scientifically? Inspired by a debate between Noam Chomsky and Jean Piaget, Scott Atran traces the development of natural history from Aristotle to Darwin, and demonstrates how the science of plants and animals has emerged from the common conceptions of folkbiology. The author proceeds not only from the more traditional philosophical, historical or sociological perspectives, but from a point of view he considers more basic and necessary to all of that of cognition.