A border--the perimeter of a single massive or stretched-out use of territory--forms the edge of an area of 'ordinary' city. Often borders are thought of as passive objects, or matter-of-factly just as edges. However, a border exerts an active influence.
Jane JacobsBut look what we have built ... This is not the rebuilding of cities. This is the sacking of cities.
Jane JacobsIntricate minglings of different uses in cities are not a form of chaos. On the contrary, they represent a complex and highly developed form of order.
Jane Jacobs