But the spectator feels that they are not presented in the three dimensions of the outer world, that they are flat pictures which only the mind molds into plastic things.

Again the events are seen in continuous movement; and yet the pictures break up the movement into a rapid succession of instantaneous impressions.

We do not see the objective reality, but a product of our own mind which binds the pictures together.

But much stronger differences came to light when we turned to the processes of attention, of memory, of imagination, of suggestion, of division of interest and of emotion.

The attention turns to detailed points in the outer world and ignores everything else: the photoplay is doing exactly this when in the close-up a detail is enlarged and everything else disappears.