The mirror becomes a tool for displacing, unmaking, and complicating perception between inside and outside. A mirror can be defined as a reflective surface that renders a reversed “virtual image” of the observer from the light that is reflected directly back into the eyes. This image is "virtual" because it does not actually exist (it does not reflect light itself, but is reflected) and due to human cognition appears to be behind the plane of the mirror the same distance as the actual object is in front of the mirror. The mirror itself is a virtual space, it never contains anything, rather it only reflects what occurs in its fore.