 Chomsky argued that since all grammars universally deviate very little from the same general structure and children seamlessly acquire language, humans must have some intrinsic language learning capability that allows us to learn language.This intrinsic capability was hypothesized to be embedded in the brain, earning the title of language acquisition device (LAD).According to this hypothesis, the child is equipped with knowledge of grammatical and ungrammatical types, which they then apply to the stream of speech they hear in order to determine the grammar this stream is compatible with.