Abstract

We think this is Chomsky's view, and also the view he finds in certain historical figures who participated in debates about innate ideas. Chomsky's contribution to the traditional debate lies in (i) his articulation and defense of a detailed nativist program in linguistics, showing _how_ experience plays only a restricted role in a broadly rationalist account of the acquisition of linguistic knowledge, and (ii) the framework this program suggests, given its empirical success, for the more general study of human cognition. Linguistics -- where this includes not just the study of expressions and their properties, but also related work in psycholinguistics -- provides a case study of how to investigate _which aspects of_ human thought are due largely to human nature. Earlier chapters have addressed (i). We'll try to give the flavor of (ii) by discussing some historically important examples, and then by reviewing some recent discoveries, inspired by the Chomskian approach to human psychology, about the properties of linguistic expressions that have a direct bearing on logical reasoning.