 Now, in principle something could exist in the space outside a subject’s body, yet not exist independently of that subject’s mind. But assuming that things outside the body are not also internal to the mind, this would be a way of representing things outside the mind as well. For further discussion of the relation between tactile experience and mind-independence, see O’Shaughnessy 1989, Martin 1992b, Smith 2002, Condillac 1947.