Home » Posts tagged 'time travel'

Tag Archives: time travel

Presentism & Relativity

Steven Umbrello
University of Toronto


In this short paper I will be presenting and evaluating the arguments provided by Keller and Nelson in their paper, ‘Presentists Should Believe in Time-Travel.’ I will show that their presuppositions, which are essential to their arguments, have the potential to devastate their central position. We will see that one of these presuppositions comes into conflict with the General Theory of Relativity, and I will demonstrate that this endangers both their own agenda and presentism as a whole.

Part I

Keller and Nelson (2001) attempt to show that there are at least some cases of time travel that are compatible with presentism, that is, the view that only the present is real (p.334). Before these scenarios are presented, they assess the nowhere argument (see Axiom 1), which they claim offers a fundamentally incorrect interpretation of the presentist view and must as a result be dismissed. We will revisit the nowhere argument (hereon NA) in Section III. (more…)