Results for 'Time travel paradoxes'

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  1. Paradoxes and Hypodoxes of Time Travel.Peter Eldridge-Smith - 2007 - In Jan Lloyd Jones (ed.), Art and Time. Australian Scholarly Publishing. pp. 172--189.
    I distinguish paradoxes and hypodoxes among the conundrums of time travel. I introduce ‘hypodoxes’ as a term for seemingly consistent conundrums that seem to be related to various paradoxes, as the Truth-teller is related to the Liar. In this article, I briefly compare paradoxes and hypodoxes of time travel with Liar paradoxes and Truth-teller hypodoxes. I also discuss Lewis’ treatment of time travel paradoxes, which I characterise as a Laissez (...)
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  2. A new time travel paradox resolved.Erick Carlson - 2005 - Philosophia 33 (1-4):263-273.
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  3. The principal paradox of time travel.Peter J. Riggs - 1997 - Ratio 10 (1):48–64.
    Most arguments against the possibility of time travel use the same old, familiar objection: If I could travel back in time, then I could kill my earlier (i.e. younger) self. Since I do exist such an action would result in a contradiction. Therefore time travel is impossible. This is a statement of the Principal Paradox of Time Travel. Some philosophers have argued that such actions as attempting to kill one’s earlier self would (...)
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  4. Do Time Travelers Suffer from Paradoxes?Daisuke Kachi - 2007 - Annals of the Japan Association for Philosophy of Science 15 (2):95-98.
    In this paper I give consideration to some apparent impossibilities for the time travelers to the past. After criticizing the views of D. Lewis and K. Vihvelin, I will show in what sense they are really impossible.
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  5.  57
    Paradoxes of Time Travel.Ryan Wasserman - 2017 - Oxford, United Kingdom: Oxford University Press.
    Ryan Wasserman explores a range of fascinating puzzles raised by the possibility of time travel, with entertaining examples from physics, science fiction, and popular culture, and he draws out their implications for our understanding of time, tense, freedom, fatalism, causation, counterfactuals, laws of nature, persistence, change, and mereology.
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  6. Paradoxes of Time Travel to the Future.Sara Bernstein - 2022 - In Helen Beebee & A. R. J. Fisher (eds.), Perspectives on the Philosophy of David K. Lewis. Oxford: Oxford University Press.
    This paper brings two fresh perspectives on Lewis’s theory of time travel. First: many key aspects and theoretical desiderata of Lewis’s theory can be captured in a framework that does not commit to eternalism about time. Second: implementing aspects of Lewisian time travel in a non-eternalist framework provides theoretical resources for a better treatment of time travel to the future. While time travel to the past has been extensively analyzed, time (...)
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  7. The Paradoxes of Time Travel.Ken Perszyk & Nicholas J. J. Smith - unknown - In Ken Perszyk & Nicholas J. J. Smith (eds.), Public lecture at Te Papa (National Museum of New Zealand).
    Humans have long been fascinated by the idea of visiting the past and of seeing what the future will bring. Time travel has been one of the most popular themes of science fiction. Most people have seen the TV series ‘Dr Who’ or ‘Quantum Leap’ or ‘Star Trek’. You’ve probably seen one of the ‘Back to the Future’ or ‘Terminator’ movies, or ‘Twelve Monkeys’. Time travel narratives provide fascinating plots, which exercise our imaginations in ever so (...)
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  8.  72
    What Tim Can and Cannot Do: A Paradox of Time Travel Revisited.Romy Jaster - 2020 - Kriterion - Journal of Philosophy 34 (4):93-112.
    Time travel, it has been argued, leads to paradoxes, and in particular to a problem known as the grandfather paradox. Lewis has famously argued for the now standard view that the grandfather paradox is merely apparent. But underlying Lewis's solution is a faulty account of ability statements – one, according to which ability statements express possibility statements. I argue, contrary to Vihvelin and others, that an ameliorated view of ability statements allows for the same treatment of the (...)
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  9. Time travel: How not to defuse the principal paradox.Timothy Chambers - 1999 - Ratio 12 (3):296–301.
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  10. (2 other versions)The Paradoxes of Time Travel.David Lewis - 1976 - American Philosophical Quarterly 13 (2):145-152.
  11.  40
    A New Paradox of Time Travel.Connor R. Kelly & Eric A. Kincanon - 2019 - Philosophical Investigations 42 (3):271-280.
    Time travel and its associated paradoxes are a topic of academic discussion that has historically been of interest only in physics and philosophy. This paper presents a new paradox of time travel that puts psychological issues at the forefront. The new time traveller faces conflicts between agency and agency awareness that are not addressed in other paradoxes. Further, in considering these other paradoxes it is seen how concerns about the time traveller's (...)
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  12.  76
    Time travel: The time discrepancy paradox.Dennis Charles Holt - 1981 - Philosophical Investigations 4 (4):1-16.
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  13.  77
    Paradoxes of Time Travel By Ryan Wasserman.Alasdair Richmond - 2019 - Analysis 79 (1):178-180.
    _ Paradoxes of Time Travel _ By WassermanRyanOxford University Press, 2018. x + 250 pp.
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  14. Can I kill my younger self? Time travel and the retrosuicide paradox.Peter B. M. Vranas - 2009 - Pacific Philosophical Quarterly 90 (4):520-534.
    If time travel is possible, presumably so is my shooting my younger self ; then apparently I can kill him – I can commit retrosuicide. But if I were to kill him I would not exist to shoot him, so how can I kill him? The standard solution to this paradox understands ability as compossibility with the relevant facts and points to an equivocation about which facts are relevant: my killing YS is compossible with his proximity but not (...)
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  15. Review of Paradoxes of Time Travel[REVIEW]Giacomo Andreoletti - 2018 - Argumenta 6:381-384.
    Book review of Wasserman, R. (2017), Paradoxes of Time Travel, OUP.
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  16.  76
    Avoiding Paradoxes in Multiverse Time Travel Narratives.Morgan Luck - 2017 - Science Fiction 2 (1).
    The aim of this paper is to help authors construct coherent time-travel narratives by establishing five features of multiverse time travel. To this end, multiverse time travel will be contrasted to fixed-universe time travel, and both versions related to various cases - where each case is designed to illustrate a key feature of multiverse time travel.
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  17. The metaphysics of D-CTCs: On the underlying assumptions of Deutsch׳s quantum solution to the paradoxes of time travel.Lucas Dunlap - 2016 - Studies in the History and Philosophy of Modern Physics 56:39-47.
    I argue that Deutsch’s model for the behavior of systems traveling around closed timelike curves relies implicitly on a substantive metaphysical assumption. Deutsch is employing a version of quantum theory with a significantly supplemented ontology of parallel existent worlds, which differ in kind from the many worlds of the Everett interpretation. Standard Everett does not support the existence of multiple identical copies of the world, which the D-CTC model requires. This has been obscured because he often refers to the branching (...)
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  18.  84
    Time Travel: Probability and Impossibility.Nikk Effingham - 2020 - Oxford, United Kingdom: Oxford University Press.
    Time travel is metaphysically possible. Nikk Effingham contends that arguments for the impossibility of time travel are not sound. Focusing mainly on the Grandfather Paradox, Effingham explores the ramifications of taking this view, discusses issues in probability and decision theory, and considers the potential dangers of travelling in time.
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  19. Time travel and time machines.Chris Smeenk & Christian Wuthrich - 2011 - In Craig Callender (ed.), The Oxford Handbook of Philosophy of Time. Oxford University Press. pp. 577-630.
    This paper is an enquiry into the logical, metaphysical, and physical possibility of time travel understood in the sense of the existence of closed worldlines that can be traced out by physical objects. We argue that none of the purported paradoxes rule out time travel either on grounds of logic or metaphysics. More relevantly, modern spacetime theories such as general relativity seem to permit models that feature closed worldlines. We discuss, in the context of Gödel's (...)
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  20. Time Travel and the Movable Present.Sara Bernstein - 2017 - In John Christopher Adorno (ed.), Being, Freedom, and Method: Themes from the Philosophy of Peter van Inwagen. pp. 80-94.
    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 (...)
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  21. On some alleged paradoxes of time travel.Paul Horwich - 1975 - Journal of Philosophy 72 (14):432-444.
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  22. (1 other version)Time Travel and Modern Physics.Frank Arntzenius & Tim Maudlin - 2002 - Royal Institute of Philosophy Supplement 50:169-200.
    Time travel has been a staple of science fiction. With the advent of general relativity it has been entertained by serious physicists. But, especially in the philosophy literature, there have been arguments that time travel is inherently paradoxical. The most famous paradox is the grandfather paradox: you travel back in time and kill your grandfather, thereby preventing your own existence. To avoid inconsistency some circumstance will have to occur which makes you fail in this (...)
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  23. On using the multiverse to avoid the paradoxes of time travel.J. Abbruzzese - 2001 - Analysis 61 (1):36-38.
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  24. Time Travel: The Popular Philosophy of Narrative.David Wittenberg - 2013 - Fordham University Press.
    Introduction: Time travel and the mechanics of narrative -- Macrological fictions: evolutionary utopia and time travel (1887-1905) -- Historical interval I: the first time travel story -- Relativity, psychology, paradox: Wertenbaker to Heinlein (1923-1941) -- Historical interval II: three phases of time travel--the time machine -- The big time: multiple worlds, narrative viewpoint, and superspace -- Paradox and paratext: picturing narrative theory -- Theoretical interval: the primacy of the visual in (...)
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  25. Zákony prírody, paradox kauzality a Gödelovo cestovanie (Laws of Nature, Causality Paradox, and the Gödelian Travel).Vladimir Marko - 1993 - Filozofia 48 (10):610-617.
    The article deals with some items of Gödelian time travel problem well-known as an illustration of a specific kind of causality paradox. Its first part presents “the travel into the past” according to several recent physical hypotheses, which, from theoretical standpoint, seem to make such an idea possible. The familiar concept of backward causation is also discussed; we need to accept and develop it, if we wish to escape this type of time-travel paradoxes. The (...)
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  26. Time Travel.Nicholas J. J. Smith - 2012 - In Ed Zalta (ed.), Stanford Encyclopedia of Philosophy. Stanford, CA: Stanford Encyclopedia of Philosophy.
    There is an extensive literature on time travel in both philosophy and physics. Part of the great interest of the topic stems from the fact that reasons have been given both for thinking that time travel is physically possible—and for thinking that it is logically impossible! This entry deals primarily with philosophical issues; issues related to the physics of time travel are covered in the separate entries on time travel and modern physics (...)
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  27. Dispositionalism’s (grand)daddy issues: time travelling and perfect masks.Giannini Giacomo & Donatella Donati - 2022 - Analysis 83 (1):40-49.
    There is a tension between Dispositionalism––the view that all metaphysical modality is grounded in actual irreducible dispositional properties––and the possibility of time travel. This is due to the fact that Dispositionalism makes it much harder to solve a potentiality-based version of the grandfather paradox. We first present a potentiality-based version of the grandfather paradox, stating that the following theses are inconsistent: 1) time travel is possible, 2) powers fully ground modality, 3) self-defeating actions are impossible, 4) (...)
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  28. Free Will and Time Travel.Neal A. Tognazzini - 2016 - In Kevin Timpe, Meghan Griffith & Neil Levy (eds.), Routledge Companion to Free Will. New York: Routledge. pp. 680-690.
    In this chapter I articulate the threat that time travel to the past allegedly poses to the free will of the time traveler, and I argue that on the traditional way of thinking about free will, the incompatibilist about time travel and free will wins the day. However, a residual worry about the incompatibilist view points the way toward a novel way of thinking about free will, one that I tentatively explore toward the end of (...)
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  29. Is Time Travel Too Strange to Be Possible? - Determinism and Indeterminism on Closed Timelike Curves.Ruward A. Mulder & Dennis Dieks - 2017 - In Anguel S. Stefanov & Marco Giovanelli (eds.), General Relativity 1916 - 2016. Minkowski Institute Press. pp. 93-114.
    Notoriously, the Einstein equations of general relativity have solutions in which closed timelike curves occur. On these curves time loops back onto itself, which has exotic consequences: for example, traveling back into one's own past becomes possible. However, in order to make time travel stories consistent constraints have to be satisfied, which prevents seemingly ordinary and plausible processes from occurring. This, and several other "unphysical" features, have motivated many authors to exclude solutions with CTCs from consideration, e.g. (...)
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  30.  65
    Time Travel and Collisions.Cei Maslen - 2023 - Metaphysica 24 (2):407-419.
    This paper focuses on problems for time travel that specifically concern continuous time-travel to the past, problems to do with potential collisions with past obstacles such as former time-slices of the time traveler herself. These problems have not been discussed nearly as much as other questions about time travel, such as the Grandfather Paradox. Here I focus on discussions by Bernstein, Dowe, Grey and Le Poidevin. After examination, I conclude that only the (...)
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  31. Time travel and coincidence-free local dynamical theories.Giuliano Torrengo - 2020 - Synthese (11):4835-4846.
    I criticize Lockwood’s solution to the “paradoxes” of time travel, thus endorsing Lewis’s more conservative position. Lockwood argues that only in the context of a 5D space-time-actuality manifold is the possibility of time travel compatible with the Autonomy Principle (according to which global constraints cannot override what is physically possible locally). I argue that shifting from 4D space-time to 5D space-time-actuality does not change the situation with respect to the Autonomy Principle, since (...)
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  32. Time Travel for Endurantists.Markos Valaris & Michaelis Michael - 2015 - American Philosophical Quarterly 52 (4):357-364.
    Famously, David Lewis argued that we can avoid the apparent paradoxes of time travel by introducing a notion of personal time, which by and large follows the causal flow of the time traveler's life history. This paper argues that a related approach can be adapted for use by three-dimensionalists in response to Ted Sider's claim that three-dimensionalism is inconsistent with time travel. In contrast to Lewis (and others who follow him on this point), (...)
     
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  33. Troubles with time travel.William Grey - 1999 - Philosophy 74 (1):55-70.
    Talk about time travel is puzzling even if it isn't obviously contradictory. Philosophers however are divided about whether time travel involves empirical paradox or some deeper metaphysical incoherence. It is suggested that time travel requires a Parmenidean four-dimensionalist metaphysical conception of the world in time. The possibility of time travel is addressed (mainly) from within a Parmenidean metaphysical framework, which is accepted by David Lewis in his defence of the coherence of (...)
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  34. Time travel and computing.Hans Moravec - manuscript
    The last few years have been good for time machines. Kip Thorne's renowned general relativity group at Caltech invented a new quantum gravitational approach to building a time gate, and, in an international collaboration, gave a plausible rebuttal of "grandfather paradox" arguments against time travel. Another respected group suggested time machines that exploit quantum mechanical time uncertainty. The technical requirements for these suggestions exceed our present capabilities, but each new approach seems less onerous than (...)
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  35. (1 other version)Time-Travel and Topology.Tim Maudlin - 1990 - PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1990:303 - 315.
    This paper demonstrates that John Wheeler and Richard Feynman's strategy for avoiding causal paradoxes threatened by backward causation and time-travel can be defeated by designing self-interacting mechanisms with a non-simple topological structure. Time-travel therefore requires constraints on the allowable data on space-like hypersurfaces. The nature and significance of these constraints is discussed.
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  36. The case for time travel.Phil Dowe - 2000 - Philosophy 75 (3):441-451.
    This idea of time travel has long given philosophers difficulties. Most recently, in his paper ‘Troubles with Time Travel’ William Grey presents a number of objections to time travel, some well known in the philosophical literature, others quite novel. In particular Grey's ‘no destinations’ and ‘double occupation’ objections I take to be original, while what I will call the ‘times paradox’ and the ‘possibility restriction argument’ are versions of well known objections. I show how (...)
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  37. Time travel.Joel Hunter - 2004 - Internet Encyclopedia of Philosophy.
     
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  38. Freedom, self-prediction, and the possibility of time travel.Alison Fernandes - 2020 - Philosophical Studies 177 (1):89-108.
    Do time travellers retain their normal freedom and abilities when they travel back in time? Lewis, Horwich and Sider argue that they do. Time-travelling Tim can kill his young grandfather, his younger self, or whomever else he pleases—and so, it seems can reasonably deliberate about whether to do these things. He might not succeed. But he is still just as free as a non-time traveller. I’ll disagree. The freedom of time travellers is limited by (...)
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  39. Endurance and Time Travel.Jiri Benovsky - 2011 - Kriterion - Journal of Philosophy 1 (24):65-72.
    Suppose that you travel back in time to talk to your younger self in order to tell her that she should have done some things in her life differently. Of course, you will not be able to make this plan work, we know that from the many versions of `the grandfather paradox' that populate the philosophical literature about time travel. What will be my centre of interest in this paper is the conversation between you and... you (...)
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  40.  11
    Personal Time and Transmigration Time Travel.Cei Maslen - 2024 - Philosophies 9 (4):98.
    Lewis argued that although paradoxes such as the famous Grandfather Paradox can be solved, only a limited set of time travel fiction is consistent. In this paper, I discuss how to extend a Lewisian approach to a class of time travel fiction not considered by Lewis: transmigration or mental time travel fiction. To this end, Lewis’s definition of personal time needs refining, and this is the primary focus of my paper. I discuss (...)
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  41. Context, conditionals, fatalism, time travel, and freedom.John Carroll - 2010 - In Joseph Keim Campbell, Michael O'Rourke & Harry S. Silverstein (eds.), Time and Identity. Bradford. pp. 79.
    This chapter illustrates a theory that describes how certain modal statements, including counterfactual sentences, are dependent on context. Building on the work of Robert Stalnaker and David Lewis, its application to a familiar argument for fatalism and a recent exchange about time-traveler freedom between Kadri Vihvelin and Ted Sider is considered. This chapter presents a new perspective on the flaws and the seductiveness of both the fatalist argument and the freedom paradox. This new perspective may be applied to arguments (...)
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  42.  26
    Interactive Time-Travel: On the intersubjective Retro-modulation of Intentions.E. Di Paolo - 2015 - Journal of Consciousness Studies 22 (1-2):49-74.
    The temporality of intentions and actions in situations of social interaction can sometimes be paradoxical. I argue that in these situations it may sometimes be possible to conceive of individual acts that can, in a strong sense, be intended retroactively. This could happen when the relational patterns in social interaction literally alter the virtual structure of a participant's past corporeal intentions resulting in an odd experience of having intended something all along without knowing it. I propose that this possibility should (...)
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  43.  49
    The Problems of Backward Time Travel.Nicholas J. J. Smith - 1998 - Endeavour 22 (4):156--8.
    The so-called paradoxes of time travel have played a significant role in both the physics and philosophy literatures - but how much force do these alleged paradoxes really have?
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  44.  30
    A Long Time Ago? Time and Time Travel in Star Wars.Philipp Berghofer - 2023 - In Jason T. Eberl & Kevin S. Decker (eds.), Star Wars and Philosophy Strikes Back. Hoboken, NJ: Wiley. pp. 99–107.
    This chapter introduces time travel into the Star Wars lore. Time travel stories in which the past is changed are in danger of being inconsistent or plagued by paradoxes. In famous time travel stories such as Back to the Future, the protagonist travels to the past, changes the past, and then returns to a present quite different from the one they left. In contemporary philosophy of time, there are three main approaches to (...)
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  45.  16
    The Art of Time Travel: An 'Insoluble' Problem Solved.Craig Bourne & Emily Caddick Bourne - 2016 - Manuscrito 39 (4):305-313.
    ABSTRACT In 'An Insoluble Problem', Storrs McCall presents an argument which he takes to reveal the real problem with backwards time travel. McCall asks us to imagine a scenario in which a renowned artist produces his famous works by copying them from reproductions brought back to him by a time-travelling art critic. The novelty of the scenario lies in its introduction of aesthetic constraints on the possibility of time travel, something which sets it apart from (...)
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  46.  69
    General relativity and the conceivability of time travel.Robert Weingard - 1979 - Philosophy of Science 46 (2):328-332.
    It has been suggested by several philosophers that many of the so-called paradoxes of backward time travel can be resolved if we conceive of the backward time traveller as having a zig-zag or N-shaped world line in spacetime. In this I am in general agreement. But there is still a problem in conceiving of backward time travel this way. In this note I will show how we can solve this problem by conceiving of backward (...)
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  47. The Ecstasy of Time Travel in Werner Herzog's Cave of Forgotten Dreams.William Day - 2016 - In David LaRocca (ed.), The Philosophy of Documentary Film: Image, Sound, Fiction, Truth. Lanham: Philosophy of Popular Culture. pp. 209-224.
    Documentary film is that genre of filmmaking that lays bare the fact of all film, which is that it presents "a world past" (Cavell, The World Viewed). This fact of film seems to point to a paradox of time in our experience of movies: we are present at something that has happened, something that is over. But what if we were to take this fact to show that film has the power to place us outside our ordinary, unreflective relation (...)
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  48. A Wittgensteinian Way with Paradoxes.Rupert J. Read - 2012 - Lanham, MD, USA: Lexington Books.
    A Wittgensteinian Way with Paradoxes examines how some of the classic philosophical paradoxes that have so puzzled philosophers over the centuries can be dissolved. Read argues that paradoxes such as the Sorites, Russell’s Paradox and the paradoxes of time travel do not, in fact, need to be solved. Rather, using a resolute Wittgensteinian ‘therapeutic’ method, the book explores how virtually all apparent philosophical paradoxes can be diagnosed and dissolved through examining their conditions of (...)
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  49.  25
    Oppositions and paradoxes: philosophical perplexities in science and mathematics.John L. Bell - 2016 - Peterborough, Ontario, Canada: Broadview Press.
    Since antiquity, opposed concepts such as the One and the Many, the Finite and the Infinite, and the Absolute and the Relative, have been a driving force in philosophical, scientific, and mathematical thought. Yet they have also given rise to perplexing problems and conceptual paradoxes which continue to haunt scientists and philosophers. In Oppositions and Paradoxes, John L. Bell explains and investigates the paradoxes and puzzles that arise out of conceptual oppositions in physics and mathematics. In the (...)
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  50. On the paradoxical time-structures of gödel.Howard Stein - 1970 - Philosophy of Science 37 (4):589-601.
    Gödel's conclusion that time-travel is possible in his models of Einstein's gravitational theory has been questioned by Chandrasekhar and Wright, and treated as doubtful in the recent philosophical literature. The present note is intended to remove this doubt: a review of Gödel's construction shows that his arguments are entirely correct; and the objection is seen to rest upon a misunderstanding. Computational points treated succinctly by Gödel are here presented in fuller detail. The philosophical significance of Gödel's results is (...)
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