 If physicalism is construed along the lines suggested in (1), we have an answer to the completeness question. The completeness question asks: what relation does everything bear to the physical if physicalism is true?  According to (1), the answer is that everything must supervene on the physical; or, to put it more technically, there is no possible world which is identical to our world in every physical respect but which is not identical to it in a biological or social or psychological respect. It will be useful to have a name for physicalism so defined, so let us call it supervenience physicalism. 