The fourth, and maybe most important point, is that man is a consumer. We consume to express identity rather than to fill basal needs. Consumption of goods is an important way for humans to mark their social status and prestige. In modern society where we no longer are what we produce we instead let the consumption of specific goods tell which identity we have chosen to belong to. All goods, experiences and other transactions carries a meaning and therefore consumption is a part of a much bigger social reproduction in everyday life.
How can those factors be included in the strategy for a sustainable future city? Maybe some days at Designboost 2008 will tell.