At the last Documenta, Gary Hill’s installation was one of the few works that appealed to a wide audience. In a long, narrow space, figures moving toward the viewer were projected with the slow, sometimes halting movement of people of various ages. Hill adressed the question of perception in two ways: the viewer saw himself confronted with his own activity (passing by images); and in going toward the exit, after his eyes were accustomed to the darkness, the other people in the space also became part of the work. The equipment also played a dual role: on the one hand video screens projected