  In time, the arguments for linguistic exceptionalism gave way to a broader view of the Nativist project. Chomsky (1975) set out a fully general schema for Poverty of the Stimulus arguments that did not depend on the distinctive features of grammars and language acquisition, which had been featured in making the original Nativist case. Chomsky began to speak of language as one of possibly many mental organs that grow in the individual. This naturalistic biological model embeds Nativism about mental organs into a wider and uncontroversial biological Nativism. It is uncontroversial that kidneys do not develop as a response to the environment, and they certainly do not copy the environment. The human body is organized in such a way that in normal (fetal) environments, kidneys will form. This point could now be deployed against the Empiricist. To presume that the basic features of our physical-biological nature are internally pre-determined, but that our mental-psychological nature is not, but is wholly externally determined, is to introduce a dualism that requires a special defense. But Empiricism seems to make just this presumption, and offers no credible defense. So the tables are turned. The Nativist has been freed from the earlier supernaturalism charge, the simplicity-card of Empiricist models turns out to be spurious, and now the Empiricist seems to be the one carrying an unmotivated dualism as excess  baggage.[9]