This chapter argues that recent arguments to the effect that the debate between presentism and eternalism lacks any metaphysical substance ultimately fail, although important lessons can be gleaned from them in how to formulate a non-vacuous version of presentism. It suggests that presentism can best be characterized in the context of spacetime theories. The resulting position is an ersatzist version of presentism that admits merely non-present entities as abstracta deprived of physical existence. Ersatzist presentism both escapes the charges of triviality and promises to offer a route to solving the grounding problem which befalls its more traditional cousins.
KeywordsOntological Commitment Translation Function Physical Existence Contrast Class Ontic Status
I am indebted to Craig Callender, Jonathan Cohen, Greg Frost-Arnold, Nat Jacobs, Thomas Müller, Tomasz Placek, Steve Savitt, and James Woodbridge for discussions and comments and to audiences at Geneva, the University of Nevada, Las Vegas, the BSPS meeting in Norwich, and the EPSA meeting in Amsterdam. This project has been funded in part by the Swiss National Science Foundation (“Properties and Relations”, 100011-113688), by the University of California, San Diego, and by the Hellman Family Foundation.
- Bourne, Craig. 2006. A Future for Presentism. Oxford: Clarendon Press.Google Scholar
- Callender, Craig. n.d. Time’s ontic voltage. manuscript.Google Scholar
- Crisp, Thomas M. 2004. On presentism and triviality. Oxford Studies in Metaphysics 1: 15–20.Google Scholar
- Hestevold, H. Scott, and William R. Carter. 2002. On presentism, endurance, and change. Canadian Journal of Philosophy 32: 491–510.Google Scholar
- Klatzky, Roberta L. 1998. Allocentric and egocentric spatial representations: Definitions, distinctions, and interconnections. Lecture Notes in Artificial Intelligence 1404: 1–17.Google Scholar
- Lewis, David. 1986. On the Plurality of Worlds. Oxford: Basil Blackwell.Google Scholar
- Wüthrich, Christian. 2010. No presentism in quantum gravity. In Space, Time, and Spacetime: Physical and Philosophical Implications of Minkowski’s Unification of Space and Time, ed. Vesselin Petkov, 257–278. Berlin: Springer.Google Scholar