Non-locality and quasiclassical reality in Kent's formulation of relativistic quantum theory

We report Adrian Kent's proposed framework for a realist, one-world, Lorentz-invariant formulation of quantum theory. The idea is to postulate a �final boundary condition: in eft�ect, a late-time distribution of mass-energy recording how photons scattered off� macroscopic objects. Nature selects this fi�nal boundary condition with the orthodox late-time Born probability; and this defi�nes the probability space of events, to give a realist quantum theory. We\ud emphasize two topics. First, we consider this formulation's verdicts about traditional locality conditions, such as Outcome Independence and Parameter Independence. Second, we discuss a possible amendment to Kent's proposal that, roughly speaking, allows for the emergence of a quasi-classical history even when mass-energy is shielded or delayed from appearing in the fi�nal boundary condition