 As an example, one of the earliest lines of investigation that appeared to support traditional nativist conceptions of the mind was the study of language (Pinker 1994). Noam Chomsky and his followers argued that language acquisition succeeds even though children are only exposed to severely limited evidence about the structure of their language (Chomsky 1967, 1975, 1988; see also Laurence &amp; Margolis 2001). Given the way that the final state (e.g., knowledge of English) outstrips the data that are available to children, we can only postulate that the human mind brings to language acquisition a complex set of language-specific dispositions. For Chomsky, these dispositions are grounded in a set of innate principles that constrain all possible human natural languages, viz., universal grammar (see Baker 2001 and Roberts 2017 on universal grammar).