If all they want to do is fix humanity and cull the herd, shouldn't they be gone by now? How much more culling can they do? And, as for refining, the only thing I see them doing is harnessing children. What kind of refining is that?if we can take an obvious self justification like that at face value, that is.Acouple episodes back, we learned the Fish Heads run around the galaxy "fixing" Civilizations that have gone astray.