 At times, Davidson appeared to flirt with the idea that the missing link was provided by the thesis of the indeterminacy of translation, developed by W.V Quine (1960) and endorsed by Davidson (1970, 222; 1979). This thesis claims that there are empirically adequate but non-equivalent complete frameworks for assigning linguistic meanings and mental states to a person on the basis of his behavior, and that there is no fact of the matter that determines that one but not other such frameworks is correct. In particular, there are no physical facts, inside a person’s body or head or outside in the external world, that could settle whether a person’s words refer to some determinate range of objects rather than some other range, or whether one rather than another systematically interdependent set of mental states, with distinct distributions of truth values, is true of that person (see Davidson 1979). If the indeterminacy thesis is true, then on the face of it there would be some rationale for rejecting the possibility of psychophysical laws. For if all physical facts are consistent with different psychological/semantic assignments, then it seems that knowing all the physical facts could not tell us whether some mental states were true of some person, or some meaning true of her words—neither could be exceptionlessly predicted or explained, just as mental anomalism maintains.