 A different type of criticism of the perceptual model of bodily awareness can be found in Wittgenstein (1978), and later Anscombe (1962). They claim that the ability to report how the limbs are located and how they move does not depend on sensations of position. It thus differs from perceptual knowledge. I know that the sky is blue in virtue of having a visual experience of the blueness of the sky but I know that my legs are crossed independently of any sensation. According to Anscombe, bodily knowledge cannot be grounded in sensations because only sensations whose content is “independently describable” can play an epistemic role. The sense of position is thus what Anscombe calls a kind of knowledge without observation: “It is without observation, because nothing shews him the position of his limbs” (Anscombe 1957: 13).