  So on Chomsky’s view, language is doubly exceptional. It is the distinctive human cognitive trait, and is essentially different from all known animal communication systems. The fact that we have it makes us exceptional as a  species.[8] It is also exceptional in that the pattern of its acquisition suggests that it stands apart from all that we learn about the world; it simply grows in us. Taken together, these considerations supported a Nativist account of language learning, but tended to discourage the idea of exporting the Nativist revolution beyond language. After all, how much of the rest of the child’s untutored knowledge of the world is as complex as grammars reveal human languages to be? And how much of that knowledge comes to the child as effortlessly and without explicit instruction?