 Were this question resolved in favor of the relativization of existence, what would be the import of a relativized version of presentism? It would have to hold that what existed changed radically with one’s state of motion. Certain events (say on Mars or a planet orbiting a distant star) may be existent for you now, sitting at your computer screen or reading a printout, but other events will replace those as existent should you decide to walk one way or another. This seems (once again) less like an interesting metaphysical insight than a restatement of the relativity of simultaneity. Possibilism is not better off in this regard, for it relies on a metaphysically distinguished present to separate the real from the potential. (See the symposium “The Prospects for the Present in Spacetime Theories” in Howard (2000) for further arguments and references.)