Ceci n’est pas un miroir. („This is not a mirror.“) questions the relationship between being and doing, in view of the fact that not everything that mirrors is perceivedas a mirror.
The acrylic cubes on display only reflect the sides turned away from the observer. Thus the primary task of a mirror — namely to mirror the viewer — is not fulfilled. Vibration sets the cubes in motion and the sides that have just been reflective are transparent again. Therefor the phenomenon of mirroring is transient and non-reproducible, and dependent on the perspective of the observer and the position of the cubes. If the viewer moves, the perception of the reflection changes as well.