At first glance the gallery space seemed devoid of art objects, although you could hear an irritating, ear-numbing drilling sound. Turning to find the source of the din, however, you discovered a video monitor hanging below the ceiling. On its screen appeared an image of a jackhammer’s revolving shaft, thundering and shuddering as it sank into a concrete floor; hands, straining to hold the drill, appeared in close-up. Eventually it became apparent that the jackhammer was boring into the floor of the same gallery space, and that the actual floor was riddled with perforations.

Ralf Berger has said,