The upshot is that given an action that would be morally wrong if judged only by its known morally significant properties, every possibility of a combination of unknown rightmaking and wrongmaking properties that would make that action morally right all things considered would be precisely counterbalanced by a combination of unknown rightmaking and wrongmaking properties that would make that action morally even more wrong, all things considered.  But, in addition, there can be combinations of unknown rightmaking and wrongmaking properties that would move an action in the direction of being morally right all things considered, but not sufficiently far to make it morally right all things considered. Finally, there is the possibility that the action has no unknown morally significant properties.