Now, Again and Again: The Metaphysics of Many Presents

This paper discusses whether there can be multiple present moments. After presenting some reasons for thinking that the question is worthwhile, I challenge several objections to its possibility: worries about the exclusivity of tense; the nature of change, tense logic and semantics; and the apparent tension between multiple presents and an open future. I conclude that at least one tense theory of time—my own ‘wave theory of time’—can accommodate the possibility of multiple present moments.