On the one hand, the volume focusses on technology demonstrations as cultural and instrumental practices in the contexts of technology- and media-development. On the other hand, the contributions highlight the technologization of demonstrations regarding the reliance of (political) demonstrations on media technologies. Building on this nexus, demonstrations appear as mediahistorically and -theoretically significant sites that reveal and negogiate intersections of technology, individual, and society, politics, performance, and aesthetics, as well as human and technical scopes of agency.