 Another way of putting the concern is that best-system accounts mistake an idealized epistemology of chance for its metaphysics (though see Lewis’ insistence that this is not the case, in his 1994). Such accounts single out three theoretical virtues—and one may wonder why just those three—and reifies the probabilities of a theory that displays the virtues to the highest degree. But a probabilistic world may be recalcitrant to even the best theorizing: nature may be unkind.