When it was first published in 1957, Noam Chomsky's Syntactic Structure seemed to be just a logical expansion of the reigning approach to linguistics. Soon, however, there was talk from Chomsky and his associates about plumbing mental structure; then there was a new phonology; and then there was a new set of goals for the field, cutting it off completely from its anthropological roots and hitching it to a new brand of psychology. Rapidly, all of Chomsky's...