It is crucial for Goodman’s argument that in the conflict between (S1) and (S2) we have (a) an actual conflict between statements, and (b) no other way to resolve that conflict (like, for example, rejecting at least one of the two statements in a non-arbitrary way). Of course, other contemporaries of Goodman, such as Quine and Carnap, also consider the problem that experience alone might underdetermine theory-choice, but believed that pragmatic criteria will in the long run allow us to arrive at one all-encompassing coherent version of the world. In Quine’s (Quine 1981) and Carnap’s (Carnap 1932) philosophies, this is assumed to be a physical version. But Goodman does not believe in physicalist reductivism. First of all, there does not currently seem to be any convincing evidence that all truths are reducible to physics (just consider the problem of reducing mental truths to physical truths), and, secondly, physics itself does not even appear to form a coherent system (WW, 5). Hence, for Goodman, we are stuck with conflicting world versions we consider true. Since, as we have seen above, relativism is no option for Goodman—because it would make true statements true about versions only—we arrive at Goodman’s pluralism: conflicting true versions correspond to different worlds.