A number of psychologists have concluded that creativity is primarily the domain of the young. Recent research has shown that this is wrong. Conceptual innovators make sudden radical innovative leaps, early in their careers. But experimental innovators work incrementally to develop new methods based on extended observation, and their innovations emerge late in their careers. The psychologists who contended that creativity diminishes with age failed to perceive that virtually every intellectual activity has had important older experimental innovators as well as their young conceptual rivals. Their error poses a barrier to understanding creativity, and makes a damaging contribution to ageism. This paper briefly examines the achievements of a number of great experimental innovators, including Charles Darwin, Charles Dickens, Paul Cézanne, and Elizabeth Bishop, and uses their work as the basis for an understanding of the specific mechanisms that connect age with experimental creativity.