Some people argue that inquiry is impossible, because a man can explore neither what he knows nor what he does not know. He cannot explore what he knows, because he knows it, and there is no need to explore it; he cannot explore what he does not know, because he does not know what he is trying to explore.
The statement 'The fallacy of ambiguity: there are two different meanings of knowing: knowing what the answer to the question being explored is and knowing what the question is to explore' most accurately points out the logical loophole in the argument.