The clock amplifies work. Until the clock was invented, what we call work was almost impossible to organize. It obsolesces leisure. It retrieves history as art form by fixed chronology - immeasurable, sequential chronology capable of visual time as measured by the clock. It reverses when pushed all the way into the eternal present, a nowness. “Man and Media,” lecture delivered at York University, Toronto, (1979), in Understanding Me (2003), p 288