Drift Grid is a large wall piece with 16 dynamic panels. The shapes on each panel slowly drift upwards, changing their look and behavior as they cross the membrane between panels. When a viewer looks at a particular column, the shapes on that column slow their movement and begin to slide down, rather than up, the wall. When the viewer looks away, the shapes revert to their upward drift.
The columns begin identically and change in reaction to viewers' gaze, so the state of the piece at any given time is the result of every viewer who has looked at the piece since it began.