The sense experience that we experience at every moment does not seem to me equally compatible with all possible ontologies. What I'm arguing is that you should have some prediction about certain experiences being more or less likely and that helps you differentiate between them. So then why is Vishnu dreaming being the same ape-like creature again and again for years and years? It seems like an incredibly strange specific dream for Vishnu to have. ...I don't know if we'll make much progress on this point, but I just think that theseontologies actually assign different probabilities to different things happening," he says.