 Of course, there’s no logical bar to putting forward a theory that posits a rich supply of fusions whose intrinsic natures are such that the distance relations that hold between the parts of these fusions supervenes upon their intrinsic characters. But why believe such a theory? It’s difficult to see how the supervenience of distance relations upon intrinsic characters of fusions could ever be explained (’superdupervenience’), because it’s difficult to see how an intrinsic property \(F\) of one thing \(X\) can intelligibly give rise to an external relation \(R\) between two other things \(x\) and \(y\), even if \(x\) and \(y\) are parts of \(X\).