  How do these different conceptions of time accord with our competing realist accounts of temporal consciousness? One point is more obvious that most. If reality is confined to a momentary present in the way Presentists maintain, then it is difficult to see how any form of the Extensional approach can be true. Our immediate experience cannot extend through time if time itself has no extension; if earlier and later stream-phases are experienced together, in the way Extensional models require, then it seems very plausible to suppose that these phases must both exist. (Or to put it another way: an experience which no longer figures in the sum total of reality is not in a position to be part of the same unified state of consciousness as an experience which does so figure, any more than a non-existent brick can help hold up a wall.) By contrast, since Retentional theorists hold that our experience of time takes no time – objectively speaking – their position looks to be entirely compatible with Presentism, and similarly for the Cinematic models (realist and non-realist).  [26]