 Wittgenstein, however, does not think that the confusion of kinds of dots was the deepest mistake he made in the Tractatus. Beyond this: “There was a deeper mistake — confusing logical analysis with chemical analysis. I thought ‘(∃x)fx’ is a definite logical sum, only I can’t at the moment tell you which” (November 25, 1932, ibid.; cf. PG, 210). Wittgenstein had supposed that there was a fact of the matter — unknown, but in principle knowable — about which logical sum “(∃x).fx” is equivalent to. But because he had failed to specify the analytical procedure in full detail, and because he had not adequately explained what analysis is supposed to preserve, this idea was unwarranted. Indeed, it exemplified an attitude he was later to characterize as amounting to a kind of unacceptable “dogmatism” (WWK, 182).