Architects and planners like to think they are building "for the ages." Recent experience, however, suggests the very opposite. The culture, the economy and fashions in urban design all appear to be in a rapid state of change. Perhaps the Internet and advances in telecommunications are shortening the half-life of cultural events. Perhaps we're just getting older and the world seems to be getting faster. Notwithstanding, buildings that exemplified urban life only 20 years ago are rapidly becoming obsolet...