I will try to elucidate this by an analogous case: We are inclined to be puzzled by the three-dimensional appearance of the drawing in a way expressed by the question, “What does seeing it three-dimensionally consist in?” And this question really asks, “What is it that is added to simply seeing the drawing when we see it three dimensionally?” And yet what answer can we expect to this question? It is the form of this question which produces the puzzlement. As Hertz says: “Aber offenbar irrt die Frage in Bezug auf die Antwort, welche sie erwartet” (p.9, Einleitung, Die Prinzipien der Mechanik). The question itself keeps the mind pressing against a blank wall, thereby preventing it from ever finding the outlet. To show a man how to get out you have first of all to free him from the misleading influence of the question.