By combining adjunctions and certain deformations, the earlier discussion of deviance is rather different from the extended c-command discussed in connection with (34). Suppose, for instance, that this analysis of a formative as a pair of sets of features delimits nondistinctness in the sense of distinctive feature theory. Thus a descriptively adequate grammar may remedy and, at the same time, eliminate the levels of acceptability from fairly high (eg (99a)) to virtual gibberish (eg (98d)). For any transformation which is sufficiently diversified in application to be of any interest, the speaker-hearer's linguistic intuition is necessary to impose an interpretation on a stipulation to place the constructions into these various categories. On our assumptions, the fundamental error of regarding functional notions as categorial is not subject to an abstract underlying order.
see also: WikiPedia -- Chomskybot