 The changes in perception, conceptualization, and language that Kuhn associated with changes in paradigm also fuelled his notion of world change, which further extends the contrast of the historicist approach with realism. There is an important sense, Kuhn maintained, in which after a scientific revolution, scientists live in a different world. This is a famously cryptic remark in Structure ([1962] 1970: 111, 121, 150), but he (2000: 264) later gives it a neo-Kantian spin: paradigms function so as to create the reality of scientific phenomena, thereby allowing scientists to engage with this reality. On such a view, it would seem that not only the meanings but also the referents of terms are constrained by paradigmatic boundaries. And thus, reflecting an interesting parallel with neo-Kantian logical empiricism, the idea of a paradigm-transcendent world which is investigated by scientists, and about which one might have knowledge, has no obvious cognitive content. On this picture, empirical reality is structured by scientific paradigms, and this conflicts with the commitment of realism to knowledge of a mind-independent world.