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The Grandfather Paradox

Nikk Effingham

in Time Travel: Probability and Impossibility

Published in print:
2020
Published Online:
April 2020
ISBN:
9780198842507
eISBN:
9780191878480
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198842507.003.0008
Subject:
Philosophy, Metaphysics/Epistemology

The Grandfather Paradox is as follows: time travel is possible; were time travel possible, I could go back in time and kill my grandfather before he met my grandmother; such an act of murder is ... More


Paradoxes of Freedom I

Ryan Wasserman

in Paradoxes of Time Travel

Published in print:
2017
Published Online:
January 2018
ISBN:
9780198793335
eISBN:
9780191841989
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198793335.003.0003
Subject:
Philosophy, Philosophy of Science

Chapter 3 is the first of two chapters on the paradoxes of freedom. Section 1 introduces the most famous paradox of this kind—the grandfather paradox—and relates it to other puzzles of “self-defeat.” ... More


Impossability Theory

Nikk Effingham

in Time Travel: Probability and Impossibility

Published in print:
2020
Published Online:
April 2020
ISBN:
9780198842507
eISBN:
9780191878480
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198842507.003.0012
Subject:
Philosophy, Metaphysics/Epistemology

My preferred solution to the Grandfather Paradox is to say that time travellers have the ability to do the metaphysically impossible (and so I can kill my grandfather), even though they never will. ... More


Paradoxes of Freedom II

Ryan Wasserman

in Paradoxes of Time Travel

Published in print:
2017
Published Online:
January 2018
ISBN:
9780198793335
eISBN:
9780191841989
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198793335.003.0004
Subject:
Philosophy, Philosophy of Science

Chapter 4 examines David Lewis’s contextualist solution to the grandfather paradox. Section 1 introduces the basic elements of Lewis’s view and explains how they are supposed to help solve the ... More


Historical Activism and the Alternate-America Novels

Catherine Gallagher

in Telling It Like It Wasn't: The Counterfactual Imagination in History and Fiction

Published in print:
2018
Published Online:
September 2018
ISBN:
9780226512389
eISBN:
9780226512556
Item type:
chapter
Publisher:
University of Chicago Press
DOI:
10.7208/chicago/9780226512556.003.0005
Subject:
History, Historiography

This chapter analyzes American alternate-history novels published in the last half of the twentieth century (beginning with Ward Moore’s Bring the Jubilee and ending with Harry Turtledove’s Guns of ... More


Constrict Theories

Nikk Effingham

in Time Travel: Probability and Impossibility

Published in print:
2020
Published Online:
April 2020
ISBN:
9780198842507
eISBN:
9780191878480
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198842507.003.0009
Subject:
Philosophy, Metaphysics/Epistemology

‘Constrict theories’ are those theories whereby a law of nature resolves the Grandfather Paradox. This chapter introduces two such positions: the Chronology Protection Conjecture (whereby the laws ... More


Incapacity Theory

Nikk Effingham

in Time Travel: Probability and Impossibility

Published in print:
2020
Published Online:
April 2020
ISBN:
9780198842507
eISBN:
9780191878480
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198842507.003.0011
Subject:
Philosophy, Metaphysics/Epistemology

We can solve the Grandfather Paradox by arguing that, when I go back to kill my grandfather, I lose the ability to kill him. Call this incapacity theory. I do not believe this theory is correct. This ... More


Inconsistency Theories

Nikk Effingham

in Time Travel: Probability and Impossibility

Published in print:
2020
Published Online:
April 2020
ISBN:
9780198842507
eISBN:
9780191878480
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198842507.003.0010
Subject:
Philosophy, Metaphysics/Epistemology

Some believe dialetheism, i.e. that there can be true contradictions. If there can be true contradictions, then we might take the moral of the Grandfather Paradox to just be that, when time ... More


Is Time Travel Possible?

Adrian Bardon

in A Brief History of the Philosophy of Time

Published in print:
2013
Published Online:
September 2013
ISBN:
9780199976454
eISBN:
9780199346165
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199976454.003.0006
Subject:
Philosophy, Metaphysics/Epistemology, Philosophy of Science

The static theory of time treats temporal location a lot like spatial location. In accordance with contemporary physics, spacetime is treated in this theory as an unchanging ... More


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