  Preparing general relativity for quantization in the Hamiltonian approach
leads to the `problem of time,' rendering the world fundamentally timeless. One
proposed solution is the `thermal time hypothesis,' which defines time in terms
of states representing systems in thermal equilibrium. On this view, time is
supposed to emerge thermodynamically even in a fundamentally timeless context.
Here, I develop the worry that the thermal time hypothesis requires dynamics --
and hence time -- to get off the ground, thereby running into worries of
circularity.
