"One of the basic situationist practices is the dérive [literally: "drifting"], a technique of rapid passage through varied ambiances. Dérives involve playful-constructive behavior and awareness of psychogeographical effects, and are thus quite different from the classic notions of journey or stroll. In a dérive one or more persons during a certain period drop their relations, their work and leisure activities, and all their other usual motives for movement and action, and let themselves be drawn by the attractions of the terrain and the encounters they find there."
Theory of the Dérive - Guy Debord.
This is a map by de Lauwe of all the movements made during one year by a student living in the 16th Arrondissement of Paris. Her itinerary forms a small triangle with no significant deviations, the three apexes of which are the School of Political Sciences, her residence and that of her piano teacher, illustrating, according to de Lauwe, the narrowness of the real Paris in which each individual lives and which, according to Debord, ought to provoke outrage at the fact that anyone's life can be so pathetically limited.