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 'False presupposition: either you know what you are exploring, or you do not know what you are exploring' most accurately points out the logical loophole in the argument.