Just an interesting paragraph from the wikipedia article on psychogeography and Debord (especially the last part)
Guy Debord's truest intention was to unify two different factors of "ambiance" that, he felt, determined the values of the urban landscape: the soft ambiance – light, sound, time, the association of ideas – with the hard, the actual physical constructions. Debord's vision was a combination of the two realms of opposing ambiance, where the play of the soft ambiance was actively considered in the rendering of the hard. The new space creates a possibility for activity not formerly determined by one besides the individual.
However, it is imperative for one to be aware of a certain amount of humor in the SI's conceptualization of psychogeography. "This apparently serious term ‘psychogeography,'" writes Debord biographer Vincent Kaufman, "comprises an art of conversation and drunkenness, and everything leads us to believe that Debord excelled at both."