Sketch: Moment Memory
A long, narrow low-ceilinged corridor, painted dark gray.
Luminescent tubes, mounted every 2 feet along the corridor, each connected to a geiger counter, emitting a brief flash whenever triggered by an event.
A video camera is mounted over each flat screen monitor is displayed on that monitor. One camera's output is delayed by 5 seconds before display on the corresponding monitor. The other is displayed in real time.
There is no other illumination. The installation is silent.