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.
The spatial field of a dérive may be precisely delimited or vague, depending on whether the goal is to study a terrain or to emotionally disorient oneself.
Our loose lifestyle and even certain amusements considered dubious that have always been enjoyed among our entourage -- slipping by night into houses undergoing demolition, hitchhiking nonstop and without destination through Paris during a transportation strike in the name of adding to the confusion, wandering in subterranean catacombs forbidden to the public, etc. -- are expressions of a more general sensibility which is no different from that of the dérive.
Guy Debord, "Theory of the Dérive" in Internationale Situationniste #2, (1958)
The dérive (with its flow of acts, its gestures, its strolls, its encounters) was to the totality exactly what psychoanalysis (in the best sense) is to language. Let yourself go with the flow of words, says the psychoanalyst. He listens, until the moment when he rejects or modifies (one could say detourns) a word, an expression or a definition. The dérive is certainly a technique, almost a therapeutic one. But just as analysis unaccompanied with anything else is almost always contraindicated, so continual dériving is dangerous to the extent that the individual, having gone too far (not without bases, but…) without defenses, is threatened with explosion, dissolution, dissociation, disintegration.
Ivan Chtcheglov, "Letter from Afar" in Internationale Situationniste #9 (1964)
