Authors
Matt Farr
Cambridge University
Abstract
“The universe is expanding, not contracting.” Many statements of this form appear unambiguously true; after all, the discovery of the universe’s expansion is one of the great triumphs of empirical science. However, the statement is time-directed: the universe expands towards what we call the future; it contracts towards the past. If we deny that time has a direction, should we also deny that the universe is really expanding? This article draws together and discusses what I call ‘C-theories’ of time — in short, philosophical positions that hold time lacks a direction — from different areas of the literature. I set out the various motivations, aims, and problems for C-theories, and outline different versions of antirealism about the direction of time.
Keywords C theory  B theory  Time  Direction of time  Causation  Symmetries
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DOI 10.1111/phc3.12714
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The Metaphysics Within Physics.Tim Maudlin - 2007 - Oxford University Press.
The Direction of Time.Hans Reichenbach - 1956 - Dover Publications.
The Unreality of Time.J. Ellis McTaggart - 1908 - Mind 17 (68):457-474.
Time and Chance.David Z. Albert - 2000 - Harvard University Press.

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