Terminology and symbolism are introduced, which facilitate the precise statement of propositions concerning the action of mind on body. The minimal meaning of "the action of mind on body" is contrasted with some of the more radical interactionistic positions to be found in the literature. These more radical positions are defined in precise formulations. It is noted that radical interactionism, or "exceptionalism" as it is here called, is a contingent, empirically-decidable issue which is quite independent of metaphysical views regarding "mind" (...) and "matter." For that very reason it should not be the object of special philosophic concern. (shrink)