  This claim, as Parfit allows, is vulnerable to counterexample. It is very hard to believe that the best artistic experience is infinitely better than a slightly less good, but still excellent, artistic experience. Viewing a Picasso might be better than viewing a Braque, but not infinitely better. It is more plausible, then, to construe the prioritarian version of perfectionism as just assigning some finite positive multiplier to the greater perfections. But while such a view would not be vulnerable to the kind of counterexample just adduced, it would disable it from answering the Repugnant Conclusion (Hurka 1993, 81–82).