ABSTRACT
Cities change—in response to world and national events that alter the patterns of migration, to changing family and household structure, to changes in the national and international economy, to the evolution of building, transportation, or workplace technology, to shifting tastes in architecture, and to innumerable other forces. New York City is not the same today as it was in 1916 or in 1961 nor are our ideas of what it should be. Neither the city nor our ideas about it will be the same thirty years from now as they are today. In the coming decades, New York City's land use and urban form will have to respond to numerous evolving trends. There is a price to be paid for such flexibility. Each change makes the resolution more complex and difficult to enforce. Adaptability is only one measure of the resolution's continued utility.
