Published online by Cambridge University Press: 28 February 2022
An effective way to challenge scientific realism these days is to ask whether evidence for a theory’s truth can ever outstrip evidence for its utility. Granted that we might have strong evidence of a theory’s explanatory, predictive, heuristic, and technological utility, might we have in addition evidence of its truth? A negative answer claims that all the evidence in support of a theory is, immediately, evidence of pragmatic virtues, and only indirectly, if at all, evidence of truth. Realism then reduces to a willingness to infer truth from utility. Evidently, none of the evidence by which theories are tested will pertain to this inference, so the only recourse for sustaining it is to a metalevel at which truth and utility are compared in the abstract. And there enormous problems loom.