What does economics have to do with architecture? I get asked this alot when people learn my undergraduate degree was Economics, while my graduate degree was Architecture. Economics is a social science that studies on the macro and micro level (individual, government, nations, firms) how scarce goods and service are distributed. Architecture can be thought of as a response to these same social and environmental conditions. Check out Guy Debord's maps. From the wikipage: "Psychogeography was defined in 1955 by Guy Debord as "the study of the precise laws and specific effects of the geographical environment, consciously organized or not, on the emotions and behavior of individuals." Another definition is "a whole toy box full of playful, inventive strategies for exploring cities... just about anything that takes pedestrians off their predictable paths and jolts them into a new awareness of the urban landscape."
I don't know much about this guy, Guy, and the Situationists yet, but I plan to. What interests me about the Situationist theory is the basic concept of degradation of modern life due to capitalistic motivations, to which subcultures exist to serve alternative experiences. I see little separation between their movement and the bottom-up movements existing today.