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Not-so-Absolute Cosmic Simultaneity

Viglione, Federico (2025) Not-so-Absolute Cosmic Simultaneity. [Preprint]

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Abstract

Cosmic simultaneity is the proposal that we can reconcile absolute simultaneity with relativity by means of the cosmic time function definable in certain cosmological models. In this paper, I add a new criticism to the debate on cosmic simultaneity: once the relevant notion of absoluteness is clarified, a seemingly appealing approach to cosmic simultaneity, the metaphysical approach, proves to be inconsistent. My overall argument proceeds as follows. First, I argue for what I call the Causal Connection Condition (CCC): the fact that two events stand in a certain temporal relation is absolute only if it obtains independently of the occurrence of any causally disconnected event. I then show that, according to metaphysical cosmic simultaneity, whether two events are cosmically simultaneous depends on causally disconnected events. I conclude that metaphysical cosmic simultaneity is inconsistent.


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Item Type: Preprint
Creators:
CreatorsEmailORCID
Viglione, Federicofederico.viglione@unimi.it0000-0001-6087-2802
Keywords: Cosmic Time Absolute Present Absolute Simultaneity Privileged Foliation Gödel’s Universe
Subjects: General Issues > Scientific Metaphysics
General Issues > History of Philosophy of Science
Depositing User: Dr. Federico Viglione
Date Deposited: 28 Jan 2026 13:50
Last Modified: 28 Jan 2026 13:50
Item ID: 28022
Subjects: General Issues > Scientific Metaphysics
General Issues > History of Philosophy of Science
Date: 7 April 2025
URI: https://philsci-archive.pitt.edu/id/eprint/28022

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