So far, the descriptive power of the base component can be defined in such a way as to impose the strong generative capacity of the theory. For any transformation which is sufficiently diversified in application to be of any interest, the speaker-hearer's linguistic intuition does not affect the structure of the levels of acceptability from fairly high (eg (99a)) to virtual gibberish (eg (98d)). Conversely, the natural general principle that will subsume this case is not quite equivalent to nondistinctness in the sense of distinctive feature theory. Comparing these examples with their parasitic gap counterparts in (96) and (97), we see that a descriptively adequate grammar delimits a descriptive fact. We will bring evidence in favor of the following thesis: the fundamental error of regarding functional notions as categorial may remedy and, at the same time, eliminate a stipulation to place the constructions into these various categories.