Abstract
In the debate about the nature and identity of possible worlds, philosophers have neglected the parallel questions about the nature and identity of moments of time. These are not questions about the structure of time in general, but rather about the internal structure of each individual time. Times and worlds share the following structural similarities: both are maximal with respect to propositions (at every world and time, either p or ∼p is true, for every p); both are consistent; both are closed (every modal consequence of a proposition true at a world is also true at that world, and every tense-theoretic consequence of a proposition true at a time is also true at that time); just as there is a unique actual world, there is a unique present moment; and just as a proposition is necessarily true iff true at all worlds, a proposition is eternally true iff true at all times. In this paper, I show that a simple extension of my theory of worlds yields a theory of times in which the above structural similarities between the two are consequences.
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Bibliography
Adams, R. M.: 1974, ‘Theories of actuality’, Noûs 8, pp. 211–231.
Barwise, J.: 1985, ‘The situation in logic — III: Situations, sets, and the axiom of foundation’, CSLI Technical Report No. CSLI-85-26, June.
Barwise, J. and Perry, J.: 1983, Situations and Attitudes (MIT Press, Cambridge).
Bealer, G.: 1981, Quality and Concept (Oxford University Press, London).
Chisholm, R.: 1979, ‘Objects and persons: revisions and replies’, Grazer Philosophische Studien 7/8, pp. 317–361.
Chisholm, R.: 1976, Person and Object (Open Court, La Salle).
Findlay, J.: 1963, Meinong's Theory of Objects and Values (Oxford UP, London).
Fine, K.: 1977, ‘Postscript to Worlds, Times and Selves’, by K. Fine and A. Prior, University of Massachusetts Press, Amherst.
Lewis, D.: 1973, ‘Possible worlds’, from his book, Counterfactuals (Harvard University Press, Cambridge), pp. 84–91.
Lewis, D.: 1979, ‘Attitudes De Dicto and De Se’, Philosophical Review 88, pp. 513–543.
Lewis, D.: 1986, On the Plurality of Worlds (Blackwell, Oxford).
Mally, E.: 1912, Gegenstandstheoretische Grundlagen der Logik und Logistik (Barth, Leipzig).
McMichael, A.: 1983, ‘A problem for actualism about possible worlds’, The Philosophical Review XCII/No. 1, pp. 49–66.
McMichael, A. and Zalta, E.: 1980, ‘An alternative theory of nonexistent objects’, Journal of Philosophical Logic 9, pp. 297–313.
Menzel, C.: 1986, ‘A complete, type-free second order logic’, CSLI Technical Report No CSLI-86-40.
Plantinga, A.: 1986, ‘Actualism and possible worlds’, Theoria 42, pp. 139–160.
Pollock, J.: 1984, The Foundations of Philosophical Semantics (Princeton UP, Princeton).
Quine, W. V. O.: 1966, ‘Variables explained away’, Selected Logical Papers (Random House, New York), pp. 227–235.
Rapaport, W.: 1978, ‘Meinongian theories and a Russellian paradox’, Noûs 12, pp. 153–180.
Stalnaker, R.: 1976, ‘Possible Worlds’, Noûs 10, pp. 65–75.
Stalnaker, R.: 1985, Inquiry (MIT Press, Cambridge).
Zalta, E.: 1983, Abstract Objects: An Introduction to Axiomatic Metaphysics (D. Reidel, Dordrecht).
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Zalta, E.N. On the structural similarities between worlds and times. Philosophical Studies 51, 213–239 (1987). https://doi.org/10.1007/BF00353648
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DOI: https://doi.org/10.1007/BF00353648