How to Change the Past in One‐Dimensional Time

The possibility of changing the past by means of time‐travel appears to depend on the possibility of distinguishing the past as it is ‘before’ and ‘after’ the time‐travel. So far, all the metaphysical models that have been proposed to account for the possibility of past‐changing time‐travels operate this distinction by conceiving of time as multi‐dimensional, and thus by significantly inflating our metaphysics of time. The aim of this article is to argue that there is an intuitive sense in which past‐changing time‐travels are metaphysically possible also in one‐dimensional time.