 What is novel—and highly controversial—about Quine’s understanding of these commonplace observations is his extension of them to claims presumed by most people (e.g., by Duhem himself) to lie outside their scope, viz., the whole of mathematics and even logic! It is this extension that seems to undermine the traditional a priori status of these latter domains, since it appears to open the possibility of a revision of logic, mathematics and any supposed analytic claims in the interest of the plausibility of the one, overall resulting empirical theory—containing the empirical claims and those of logic, mathematics and the analytic! Perhaps this wouldn’t be so odd should the revisability of such claims permit their ultimately admitting of a justification that didn’t involve experience. But this is ruled out by Quine’s insistence that scientific theories, along with their logic and mathematics, are confirmed “only” as “corporate  bodies.”[13]