Postmetropolis

Edward W. Soja had written about the "Six Discourses on the Postmetropolis". Postmetropolis is the term to describe the differences between the post modern areas and the modern areas from before the 1970's. Modernism came first with Wright, Howard, and La Corbusier. In the 1970's Post Modernism came about which was basically people rebelling against the modernist principles.
The Postmetropolis had six main discourses has Soja stated. They were Flexcity, Cosmopolis, Exopolis, Metropolarities, Carceral Archipelago's, and Sim city. Flexcity was Post-Fordism which looks to consumers first and asked for feedback unlike Fordism the Modernism era. The producer and consumer are in constant communication. An example of a Flexcity is New York, it can easily adapt and change, so you can think of Felxcity as flexible.
Cosmopolis is simply to be cultured and diverse, with a diverse population. It has golbalization and glocalization which are means of exchange in a way.
Exopolis is the idea of an edge city. Such as in the greater metro area a good consumer suburb town that is the center of production can be part of the city. Exurbs are greater than 50 miles from the main city. This article from The New York Times talks about people commuting form exurb cities...http://www.nytimes.com/1994/12/11/realestate/commuting-at-the-edge-of-the-exurb-belt.html
Metropolarities are developments of new types of qualities or social structures that might emerge.
Carceral Archipelagos are "prison islands". It is the thought that you are being watched , such as by having to sign in and show id's to get into buildings and such similar places.
Last is the Sim City. An example of this is Time Square. It is both real and unreal. It use to be a very serious center of production and post modernism it is used for many such things as the ball dropping and the naked cowboy.