 This reply can be handled by the advocate of inverted qualia by switching to a case in which we both have visual experiences with the same representational contents on the same occasions while still differing phenomenally. Whether such cases are really metaphysically possible is open to dispute, however. Certainly, those philosophers who are representationalists about qualia (see Section 7) would deny their possibility. Indeed, it is not even clear that such cases are conceptually possible (Harrison 1973, Hardin 1993, Tye 1995). But leaving this to one side, it is far from obvious that there would not have to be some salient fine-grained functional differences between us, notwithstanding our gross functional identity.