 Combining such aspirations with the observation that thermodynamics requires special boundary conditions leads quite naturally to the thought that “the second law becomes a selection principle for the boundary conditions of the universe [for quantum cosmology]” (Laflamme 1994: 358). In other words, if one is to have a theory of initial conditions, it would certainly be desirable to deduce initial conditions that will lead to the thermodynamic arrow. This is precisely what many quantum cosmologists have sought. (This should be contrasted with the arrows of time discussed in semiclassical quantum gravity, for example, the idea that quantum scattering processes in systems with black holes violate the CPT theorem.) Since quantum cosmology is currently very speculative, it might be premature to start worrying about what it says about time’s arrow. Nevertheless, there has been a substantial amount of debate on this issue (see Haliwell et al. 1994).