 So far, we have considered calibration arguments and accuracy arguments for Probabilism. In each of these cases, we identify a particular feature of a credence function—the proximity of its credences to being calibrated, or their proximity to the omniscience credences—we claim that it is the source of all epistemic utility, and we attempt to characterize the mathematical functions that legitimately measure the extent to which the credence function has that feature. In this section, we consider an argument due to Joyce (2009) that attempts to characterize epistemic disutility functions directly.