Arrows named "Indecisive arrows" are scattered on the floor, walls and ceilling. "Indecisive arrows" on the walls and ceilling are drawings by black paint. "Indecisive arrows" on the floor are made by rubber. When visitors step on the rubber arrow, they can feel "Indecisive arrows" through their shoes. 13w tubes are set on the ceiling, walls and floor. They are turned on for 2 min. and are turned off for 1 min. and repeated it.
Luminous painted wires are at each corner. When lights off, visitors can see only wires on each corner. And they can check only their position in the Installation.