 Second, the issue of cp-laws became important in the philosophy of mind as well. Davidson argued for his anomalous monism on the basis of a stark contrast between homonomic and heteronomic generalizations. Homonomic generalizations are those that can be improved in the same vocabulary, in which they are stated. This requires, as Davidson puts it, a comprehensive closed system that is only provided by physics. Outside of physics, we have only heteronomic generalizations, i.e., generalizations that can be made precise only by drawing on the vocabulary of another science. As a consequence, Davidson assumes that only physics has laws, whereas there cannot be psycho-physical or psychological laws. More generally, Davidson’s argument implies that there are no special science laws (see Davidson 1963,  219).[9]