 The argument from combinatorial constraints may be connected to the classic monistic argument from the internal relatedness of all things (Schaffer 2010b). A strong notion of internal relatedness is one on which two entities are internally related if and only if neither can exist without the other (necessarily, either both exist or neither exist). The idea of combinatorial constraints may be seen as a useful weakening of this strong notion of internal relatedness. So understood, to claim that all things are internally related just is to claim that there are combinational constraints between all things, and the inference from the internal relatedness of all things to priority monism just is the inference from combinatorial constraints to a holistic common ground, which accounts for the constraints. 