Abstract: In this paper, I argue that the thesis that time travel is logically possible, is inconsistent with the necessary truth of any of the usual ‘open future objective present’ models of the universe. It has been relatively uncontroversial until recently to hold that presentism is inconsistent with the possibility of time travel. I argue that recent arguments to the contrary do not show that presentism is consistent with time travel. Moreover, the necessary truth of other open future-objective present models which we might, prima facie, have supposed to be more amenable to the possibility of time travel, turn out also to be inconsistent with this possibility.
Comment: A nice, short paper that could be a good bridge between teaching Metaphysics of Time and Metaphysics of Time Travel. It would be good to have already taught A-theory vs B Theory first, as well as specific versions of the A theory (although the paper does also give a good overview of some of these).