As production becomes increasingly clean and knowledge-based, as our urban economies tip dramatically to service industries, as racism and ethnic animosities ebb, and as the model of mixed use becomes more and more persuasive and visible, cities are in a position to dramatically rethink zoning as a medium for leveraging and usefully complicating difference, rather than simply isolating it.
The biographer of Robert Moses, Robert A. Caro, refers to the bridges and underpasses of the famed New York State parkways. These bridges and underpasses are quite low, intentionally specified by Moses to allow only private cars to pass. All those who traveled by bus because they were poor or black or both were barred from the use and enjoyment of the parkland and its "public amenities" by the technical design of the bridges. Even at the time of Robert Moses, a political statement of the form "We don't want them blacks in our parks" would have been unacceptable in New York State. But a technological expression of the same prejudice appeared to be all right. Of course, to the public the intent of the design became evident only after it was executed, and then the bridges were there.
"The art world is highly invested in the idea that you can take an object and set it in a room, and the internal relationships will be so strong and so meaningful that all the kinds of change that take place on the object as a result of its being in a new environment will not critically affect our perception of the object. If that is the given assumption, then the object can be moved from one environment to another without its being critically altered, which then gives rise to the illusion that it can be moved from culture to culture, that it has the ability to transcend its cultural specificity, which in turn gives rise to the ultimate illusion that the object can transcend time. Because what is being claimed is that there exist certain objects isolated and meaningful enough to be transcendent, that they have the power to go on and on, that they are, as it were, timeless.
"Well, one of the things that I was becoming involved in at that point in playing artist was the growing suspicion that this breaking down of the edge, the idea of the painting's moving into its environment, was putting the whole heightened rationale of the art object into doubt. There is simply no real separation line, only an intellectual one, between the object and its time environment. They are completely interlocking: nothing can exist in the world independent of all the other things in the world."