Experience always arises as an instance of possible experience. It is your experience, being in this room with these sights and sounds, with these bodily sensations, within this moment of a life-story or two, with these thoughts, these intents, these vague anxieties simmering off stage, these tasks quietly in preparation etc., but it could be that of someone else, your double, one of the many philosophical doubles - brain in vat, parallel universe, hypothetical, numerically different recurrence and so on - or another mind that has been given the right data to within adequate tolerance... Well, the imagination can play with such notions, but the point is that the nature of all that is positive in experience has a generality about it, is in a certain way symbolic, is apprehended as if it is being read. The thought experiments are not discoveries but ways of expressing this peculiar fact about your experience. It is yours, absolutely yours, and yet nothing in it points to what you definitively are. There is nothing in your experience that only you could experience - and this seems to bother people judging by the ways that people seem to strive to have unique experiences. All this suggests a variation of self-inquiry: to find what it is in your experience which is uniquely yours. To see how such a question could arise, to see what is implied by such a question. Does the question mean anything at all? If yes, then what? If no, then what?