there is something troubling about the idea that all experience might be a dream. For how could we set about determining whether that is true? Sometimes people ‘pinch themselves’ to ensure that they are not dreaming. But is this really a good test? Might we not just dream that the pinch hurts? We might try from within a dream to discover whether it is a dream. Yet even if we think up some cunning experiment to determine whether it is, might we not just dream that we conduct it, or dream that it tells us the
