Christian Marclay in San Francisco

Two separate exhibitions showcase the contemporary visual artist's keen eye and ear

On a sunny afternoon in San Francisco, sitting in a dark room watching Christian Marclay‘s masterpiece, “The Clock,” provokes a certain anxiety about the passage of time, yet at the same time leaves you unable to pull yourself away from watching what will happen next. While what follows is slightly obvious—the 24-hour-long video shows the time in an actual real-time format by stringing together thousands …