Which is fair enough, but I do not believe it is germane to the issues @Eddie and @DaleCutler are raising. It seems to me they are having a hard time accepting that there cannot be any hidden variables influencing the timing of the decay of the atom of which we are currently unaware, but if and when we learn of these variables we will be able to predict when a particular atom will decay. Again, according to the most accepted and used models of QM, that is unknowable in principle.