 For just as the meaning of a term is not an intrinsic property but is dependent upon the way in which the term has been incorporated into a theory, in the very same manner the content of a whole theory (and thereby again the meaning of the descriptive terms which it contains) depends upon the way in which it is incorporated into both the set of its empirical consequences and the set of all the alternatives which are being discussed at a given time: once the contextual theory of meaning has been adopted, there is no reason to confine its application to a single theory, especially as the boundaries of such a language or of such a theory are almost never well defined.