Authors
Sara Bernstein
University of Notre Dame
Abstract
In "Changing the Past" (2010), Peter van Inwagen argues that a time traveler can change the past without paradox in a growing block universe. After erasing the portion of past existence that generates paradox, a new, non-paradox-generating block can be "grown" after the temporal relocation of the time traveler. I articulate and explore the underlying mechanism of Van Inwagen's model: the time traveler's control over the location of the objective present. Van Inwagen's model is aimed at preventing paradox by changing the past, but it achieves something broader than paradox avoidance: it gives tools for a new model of time travel. I use van Inwagen's tools to develop a new kind of time travel in which in which the location of the objective present is shifted by the time traveler. I call this type of time travel Movable Objective Present, or MOP. After defining MOP, I argue that it is compatible with any theory of time that accepts hypertime, including presentism and moving spotlight theory.
Keywords time travel  presentism  hypertime  growing block
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References found in this work BETA

Changing the Past.Peter Van Inwagen - 2010 - Oxford Studies in Metaphysics 5:3-40.
Troubles with Time Travel.William Grey - 1999 - Philosophy 74 (1):55-70.
Travelling in A- and B- Time.Theodore Sider - 2005 - The Monist 88 (3):329-335.
No Time Travel for Presentists.Steven D. Hales - 2010 - Logos and Episteme 1 (2):353-360.
The Paradoxes of Time Travel.David Lewis - 2004 - In Tim Crane & Katalin Farkas (eds.), Metaphysics: A Guide and Anthology. Oxford University Press.

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Citations of this work BETA

Time.Ned Markosian - 2010 - Stanford Encyclopedia of Philosophy.
The End of Mystery.Sam Baron & Mark Colyvan - 2019 - American Philosophical Quarterly 56 (3):247-264.

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