Erkenntnis 64 (1):75 - 83 (2006)

Reina Hayaki
University of Nebraska, Lincoln
It has been argued by Bernard Linsky and Edward Zalta, and independently by Timothy Williamson, that the best quantified modal logic is one that validates both the Barcan Formula and its converse. This requires that domains be fixed across all possible worlds. All objects exist necessarily; some – those we would usually consider contingent – are concrete at some worlds and non-concrete (but still existent) at others. Linsky and Zalta refer to such objects as ‘contingently non-concrete’. I defend the standard usage of the word ‘exists’, and the view that many objects exist only contingently. I argue that the Linsky/Zalta analysis, and to a lesser extent Williamson’s, suffers not only from a peculiar ontology but also from two related formal difficulties. Their analysis gives either counter-intuitive or ad hoc results about essences, and it fails to accommodate contingently existing abstracta.
Keywords Philosophy   Philosophy   Epistemology   Ethics   Logic   Ontology
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Reprint years 2006
DOI 10.1007/s10670-005-0294-7
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References found in this work BETA

Essence and Modality.Kit Fine - 1994 - Philosophical Perspectives 8:1-16.
Fiction and Metaphysics.Amie L. Thomasson - 1998 - Cambridge University Press.
Counterpart Theory and Quantified Modal Logic.David K. Lewis - 1968 - Journal of Philosophy 65 (5):113-126.
Bare Possibilia.Timothy Williamson - 1998 - Erkenntnis 48 (2-3):257--73.

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Citations of this work BETA

Modal Logic.James W. Garson - 2009 - Stanford Encyclopedia of Philosophy.
Modal Logic as Methodology.Meghan Sullivan - 2014 - Philosophy and Phenomenological Research 88 (3):734-743.
A Note on Barcan Formula.Antonio Frias Delgado - 2017 - Journal of Applied Non-Classical Logics 27 (3-4):321-327.

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