Structure is the essence of matter, and the essence of structure is mathematics.’ Logopolis (1981) is a mournful epic of cosmic destruction, obsolescence and collapse. This Black Archive investigates the changes before and behind the camera, explores the story’s themes of entropy and rebirth, and places it in the context of a specific moment in the history of computing. Jonathan Hay is the author of Science Fiction and Posthumanism in the Anthropocene. They lecture at the University of Chester.