modern art, but it is unlikely that a large number of places will join New York and London as centers of artistic innovation …

paintings and collages in entirely new ways, and their innovation was quickly adopted by other artists. Words, phrases, and …

important change involved the structure of the market for advanced art. Innovation had always been the hallmark of important art … unprecedented freedom to innovate. Conspicuous innovation subsequently became necessary for important modern art. All artists … recognized the increased demand for innovation, but it would be conceptual artists who could take advantage of it more quickly …