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An Everettian Account of Modality

Harris, Matthew; (2022) An Everettian Account of Modality. Masters thesis (M.Phil), UCL (University College London). Green open access

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In this thesis I propose that if Everettian Quantum Mechanics (EQM) is correct, then ordinary-objects contained within Everettian worlds ground the truth of nomic de re modal statements in a desirable way. Guided by desiderata set out following a brief assessment of notable modal accounts, I outline one way in which an Everettian account of objective de re modality can be formulated. By applying Eternalism and a formulation of Worm Theory to branching EQM with overlapping worlds, I arrive at an Everettian account of modality whereby concrete ordinary-objects – perduring ‘Branching-Worms’ – ground the truth of de re modal statements, in virtue of having parts which exemplify properties that the modal statement asserts of the ordinary-objects. I conclude that the Everettian modal account I have outlined requires further development in certain areas but hopefully shows some promise as a contending account of modality.

Type: Thesis (Masters)
Qualification: M.Phil
Title: An Everettian Account of Modality
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: Copyright © The Author 2022. Original content in this thesis is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) Licence (https://creativecommons.org/licenses/by-nc/4.0/). Any third-party copyright material present remains the property of its respective owner(s) and is licensed under its existing terms. Access may initially be restricted at the author’s request.
UCL classification: UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of Arts and Humanities
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of Arts and Humanities > Dept of Philosophy
UCL > Provost and Vice Provost Offices > UCL SLASH
URI: https://discovery.ucl.ac.uk/id/eprint/10151337
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