We will bring evidence in favor of the following thesis: a subset of English sentences interesting on quite independent grounds can be defined in such a way as to impose a descriptive fact. By combining adjunctions and certain deformations, relational information is not subject to the strong generative capacity of the theory. Of course, the speaker-hearer's linguistic intuition does not readily tolerate an important distinction in language use. From C1, it follows that the systematic use of complex symbols may remedy and, at the same time, eliminate problems of phonemic and morphological analysis. We have already seen that a descriptively adequate grammar does not affect the structure of irrelevant intervening contexts in selectional rules.
see also: WikiPedia -- Chomskybot