 Perhaps Lipton’s proposal is not intended to address those who already assign highest priors to best explanations, even if they do so on grounds that have nothing to do with explanation. The idea might be that, as long as one does assign highest priors to those hypotheses, everything is fine, or at least finer than if one does not do so, regardless of one’s reasons for assigning those priors. The answer to the question of how explanatory considerations are to guide one’s choice of priors would then presumably be that one ought to assign a higher prior to the best explanation than to its rivals, if this is not what one already does. If it is, one should just keep doing what one is doing.