The opposition between the Merzbau and the Demonstration Room and the close bond between their two authors produce one of the most puzzling moments of mid-twenties German avant-garde history. Yet one bridge that links the two is their focus on the issue of tactility and bodily experience in relation to the work of art. For Lissitzky's project to accommodate avant-garde painting and sculpture within the museum now focused primarily on Dorner's call for a new participatory mode of reading and perceiving. Dorner's project was to reconceive the museum as a space of author/object/spectator collaboration mediated through an increased experience of tactility. In the installation that Lissitzky designed, with its emphasis on drawers and cabinets and shelves that the spectator could open and move, thereby being directly involved in the repositioning of him- or herself as a spectator or in the positioning of the object in a new relationship, tactility and tangibility were clearly elements of a radically altered mode of perceptual interaction, changing the contemplative space of the museum into an archive.