5 ideas
Space is examined in nested scales, one after another: page, bed, room, apartment, building, street, neighbourhood, town, country, world. Each scale is taken as its own unit of experience with its own conventions and boundaries. Moving through them in order shows how private space shades into public and known space shades into abstract.
The exercise is to sit in one place and write down everything you see, especially what seems not worth noting: cars, colours, passers-by, shop signs. Keep going until the scene becomes improbable and strange. Forcing yourself to write more and more slowly strips away familiarity until the obvious reveals itself.
Space is never simply given or owned. We have to keep marking it, naming it and conquering it, and it erodes, changes and slips away from us. The ordinary acts of dwelling and remembering places are therefore attempts to hold on to something that is always disappearing.
Perec imagines an apartment with a room that has no purpose at all: not a spare room or a storeroom, but simply useless. The thought experiment shows that every room is defined by a function in time. The daily cycle of kitchen, bedroom and living room assigns the house's rooms to activities and hours.
Perec sets out to recall every bedroom he has slept in and finds that bodily memory of layout returns before events do: where the door was, which side the window was on. Recalling the room's geometry pulls back the memories attached to it. Space serves as a mnemonic scaffold for a whole life.