 The analytic/synthetic distinction took a decided hit when the noted logician, Willard van Orman Quine, published “Two Dogmas of Empiricism” (1953), challenging its adequacy. Quine argued that the notion of analyticity presupposes the notion of synonymy-in-use, which in turn presupposes understanding inter-substitutability-while-preserving-truth. He claimed none of the notions can be understood without the other, creating a circular relation between them. Thus, matching up a definiens with a definiendum could only be done if we already understood that the definiens specifies the meaning of the word that is being defined—a variation of “the paradox of analysis”, according to which we either already know the meaning of words (in which case analysis is unnecessary) or we do not (in which case it is impossible). The idea of analyticity appeared to have been deposed.