  Ramsey’s aim was not to conclusively establish this hypothesis on the basis that (3.1) and (3.2) are used to make the same assertion–as indeed many of his critics have supposed. What they miss is that to be fit for purpose, Ramsey’s argument only had to be strong enough to make us seriously entertain the possibility that the subject-predicate distinction doesn’t serve a representational function, because that’s enough to throw doubt upon the procedure of classifying things on the basis of the subject-predicate distinction, hence strong enough to make it evident that “the question requires a new examination” (1925b, 405).