‘As we watch a film, the continuous act of recognition in which we are involved is like a strip of memory unrolling beneath the images of the film itself, to form the invisible under-layer of an implicit double exposure.’

Deren, M (1960) ‘Cinematography: The Creative Use of Reality’ 
in Campany, D (ed.) (2007) The Cinematic Cambridge, MA: MIT and London: Whitechapel p.172