One possibility: Omega is running this universe as a simulation, and has already run a large number of earlier identical instances.
Ok, that is possible, I suppose. Though it does conflict, in a sense, with the claim that he put the money in the box before I made the decision whether to one-box or two-box. Because, in some sense, I already made that decision in all(?) of those earlier identical simulations.
One possibility: Omega is running this universe as a simulation, and has already run a large number of earlier identical instances.
There may be many less obvious possibilities, even if you require Omega to be certain rather than just very sure.
Ok, that is possible, I suppose. Though it does conflict, in a sense, with the claim that he put the money in the box before I made the decision whether to one-box or two-box. Because, in some sense, I already made that decision in all(?) of those earlier identical simulations.