Lawrence Alloway observed that Abstract Expressionism was the creation of middle-aged artists and not an avant-garde. Jackson Pollock was in his mid-thirties and already a considerable painter when he laid a canvas on the floor and began to swing paint on a stick. Willem de Kooning and Barnett Newman were in their forties before they found their signature styles. For twenty years, those painters explored a variety of styles and thoughtfully drifted towards individual expression; yet the change, when it came, seemed to pounce into their art rather than extend neatly from the preparation. The case was similar with Tony Tuckson.