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THE CHESHIRE CAT PROBLEM AND OTHER SPATIAL OBSTACLES TO BACKWARDS TIME TRAVEL.

The article focuses on the Cheshire cat problem and other spatial hindrances or obstacles to backwards time travel. Apparent counterexamples to the "no coincident objects" principle involve sortal terms whose applications differ over times or worlds. The three-dimensionality, who talks instead of ob...

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Published in:Monist Vol. 88; no. 3; pp. 336 - 353
Main Author: Poidevin, Robin Le
Format: Article
Published: Oxford University Press / USA Jul2005
Subjects:
Time travel
Spacetime
Philosophy
Imaginary voyages
Science fiction
Online Access:View this record in EBSCOhost
Summary:The article focuses on the Cheshire cat problem and other spatial hindrances or obstacles to backwards time travel. Apparent counterexamples to the "no coincident objects" principle involve sortal terms whose applications differ over times or worlds. The three-dimensionality, who talks instead of objects enduring through time, will insist that the time machine that has not yet been activated is numerically identical to the one that is traveling backwards in time.