  The link between linguistics and innateness comes in a second important move: the psychologization of grammars. Chomsky argued that every speaker of a language has a mental representation of its grammar. This sets up a natural question—how did the grammar get into the speaker’s head?—and two traditional answers immediately present themselves. The Empiricist would aim to show that the grammar (if it indeed is in the head) could be learned from experience in much the way one learns other facts about the world. The Nativist, in contrast, is ready to consider that learning a language—now reconceived as a matter of grammar acquisition—depends in some way on a language-specific innate endowment. This brings us to the third important step. Chomsky argued that a comparison of (i) the grammar that has to be acquired, and (ii) the idiosyncrasies of the acquisition process and the data presented to the language-learner, favors the Nativist approach.