 Reichenbach was quite explicit that logic is not empirical. “The rules of logic cannot be affected by physical experience.” (p. 102). His logic with Indeterminate as a value of propositions is the same as logic with “not empirically meaningful” as a value. In Reichenbach’s view that is the logic, as it were, with or without quantum mechanics. It is only that, before quantum mechanics, the principle of equivalent descriptions precluded any need to pay attention to the Indeterminate value. 