"Periodisation" considers the complex way in which time is experienced and described, autobiographically, historically, and epochally. It performatively lays out alongside and on top of each other numerous ways of conceiving time, some of them overlapping, some of them contradictory, some of them perspectival. Their relation may be linear, as in certain models of sequential time, and also stratigraphical, to signal a deeper time. As in a complex system, all of the elements are meant to be inter-related, and held in the mind at once. This particular system, however, is mortal, entropic, and ends in death Period.