If you walk into the room a sensor on the closest station "sees" you and is activated, each station is made up of a stereo and a mirror box with a light in it. When activated the stereo at the closest station starts playing and a light box down the hall turns on. When a light box is on, a image appears in the mirror, when it is off you can only see your reflection. With this stimulus a observation is moved around the room, triggering different sequences of sound and light. The sound from the stereos is made from a song chopped up into 8 repeating loops. With the correct movement through the space a person is able to hear the song in the original order, otherwise a cacophony of sound occurs. it Was derived from a question of free will and the blocks of knowing a person can achieve. i came to the conclusion that all choice occurs in the past so you better give yourself a good upbringing.
Was tested out in the "all i know is that i don't trust him" presentation (pictures taken during set up).
A monkey's memory.
click around picture for details.