  Based on recent results from general relativistic statistical mechanics and
black hole information transfer limits a space-time entropy-action equivalence
is proposed as a generalization of the holographic principle. With this
conjecture, the action principle can be replaced by the second law of
thermodynamics, and for the Einstein-Hilbert action the Einstein field
equations are conceptually the result of thermodynamic equilibrium. For
non-equilibrium situations Jaynes' information-theoretic approach to maximum
entropy production is adopted instead of the second law of thermodynamics. As
it turns out, for appropriate choices of constants quantum gravity is obtained.
For the special case of a free particle the Bekenstein-Verlinde
entropy-to-displacement relation of holographic gravity, and thus the
traditional holographic principle, emerges. Although Jacobson's original
thermodynamic equilibrium approach proposed that gravity might not necessarily
be quantized, this particular non-equilibrium treatment might require it.
