This chapter recapitulates Professor Ricketson’s analysis in his 1992 Manges Lecture at Columbia Law School, presciently titled 'People or Machines: The Berne Convention and the Changing Concept of Authorship'. As Ricketson systematically developed the inquiry, it became clear that ‘People or Machines’ in fact meant ‘People Not Machines’. This chapter considers whether, more than twenty-five years later, subsequent technological developments warrant reconsideration of the human authorship premise underlying the Berne Convention. If that premise holds firm, the next question is whether non-human-generated outputs require some form of intellectual property protection. Any such regime, it should be noted, would fall outside the Berne Convention.