 Third, what exactly does the Past Hypothesis say in the context of our best and most recent physics? While not denying that temporally asymmetric boundary conditions are needed to solve the problem, Earman (2006) is very critical of the Past Hypothesis, concluding that it isn’t even coherent enough to be false. The main problem Earman sees is that we cannot state the Past Hypothesis in the language of general relativity. Callender (2010, 2011b) and Wallace (2010) discuss the related question of stating the Past Hypothesis when self-gravitation is included. One may also consider the question in the context of quantum theory (see Wallace 2013).