  What becomes of the Problem of Interaction on such a view? It would  seem to dissolve. While causation between brain and body is complex,  even to the point of being empirically inscrutable, it does not pose  the same problems as soul–body interaction. There are no special  philosophical problems with brain–body interaction, nor is there  anything especially odd or worrisome about an event in your brain  causing, say, your arm to go up. Any philosophical questions here  belong to   the metaphysics of causation  generally and have no special application to mental causation.