Why not now go on to explain how it is possible for us to discern a world on film? This Kantian question is better avoided here, for the simple reason that it is too ambitious. Our understanding both of thought and of the objects of thought is rudimentary, no more so than when we try to tackle world constitution. We have only the dimmest idea of how infants build up their picture of the world from the undifferentiated manifold of experience, especially when all our communication presupposes our results being coordinatable. It is possible that studying how it is done with films may illuminate that murky area. If world constitution from films is to illuminate world constitution tout court we have some way to go as yet.