 The interpretation of the notion of knowledge without observation has given rise to many debates. A first concerns Anscombe’s epistemological theory. Why do contents have to be independent to ground judgments? The second problem is that it seems that her argument ultimately relies on her phenomenological intuitions: “no question of any appearance of the position to me, of any sensations which give me the position” (Anscombe 1962). However, one may question this claim on the basis of bodily illusions (Harcourt 2008; for a reply, McDowell 2011). For instance, if the tendon of the biceps is vibrated, one can “feel” one’s arm moving though one knows the arm actually remains still. But does that suffice to show that the sensation is independently describable? The problem is that the notion of independent description is not clear. Why does “the visual impression of a blue expanse” (Anscombe 1962: 57) qualify as independent but not the impression of one’s arm moving? It may sometimes be difficult to see why bodily awareness does not fall into the same category as perceptual awareness.