 The key feature of this now-canonical method is to treat mental states and processes as being implicitly defined by the Ramsey sentence of one or another psychological theory — common sense, scientific, or something in between. (Analogous steps, of course, can be taken to produce the Ramsey-sentence of any theory, psychological or otherwise). For (a still simplistic) example, consider the sort of generalizations about pain introduced before: pain tends to be caused by bodily injury; pain tends to produce the belief that something is wrong with the body and the desire to be out of that state; pain tends to produce anxiety; pain tends to produce wincing or moaning.