Bulletproof Grandfathers, David Lewis, and ‘Can’t’-Judgements

Garrett, Brian; Joven Joaquin, Jeremiah

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Bulletproof Grandfathers, David Lewis, and ‘Can’t’-Judgements

Date

2022

Authors

Garrett, Brian

Joven Joaquin, Jeremiah

Abstract

In this discussion, I argue that David Lewis fails to support his claim that (relative to one context) time-travelling Tim cannot kill his Grandfather in 1921. This result, in turn, undermines Lewis’s contextualist solution to the Grandfather Paradox – i.e., conceding that Tim can and cannot kill Grandfather, but relative to different contexts in each case.