“La Défense oder: ∞”, 2006 by Johanna Tinzl / Stefan Flunger. “La Défense oder: ∞” consists of two cameras that work as a self-referential system. Motion detectors analyse the lightness distinctions of the images that are taken by the cameras on the side opposite to each other. They react due to changes within a certain scope of the image and set that camera in motion that has observed those shifts in darkness or in lightness. Video.