ABSTRACT
A natural counterpart to the theory that minds constitute a world other than ‘the physical world’ is the theory that there exist ways of discovering the contents of this other world which are counterparts to our ways of discovering the contents of the physical world. In sense perception we ascertain what exists and happens in space; so what exists or happens in the mind must also be ascertained in perception, but perception of a different and refined sort, one not requiring the functioning of gross bodily organs.
