What do light clocks say to us regarding the so-called clock hypothesis?

The clock hypothesis is taken to be an assumption independent of special relativity necessary to describe accelerated clocks. This enables to equate the time read off by a clock to the proper time. Here, it is considered a physical system–the light clock–proposed by Marzke and Wheeler. Recently, Fletcher proved a theorem that shows that a sufficiently small light clock has a time reading that approximates to an arbitrary degree the proper time. The clock hypothesis is not necessary to arrive at this result. Here, one explores the consequences of this regarding the status of the clock hypothesis.
Keywords light clock   proper time   clock hypothesis   relativity
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DOI 10.1387/theoria.18143
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Philosophy of Physics: Space and Time.Tim Maudlin - 2012 - Princeton University Press.
The Theory of Relativity.C. Møller - 1972 - Oxford, Clarendon Press.

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