If you stop to think about it, what the Elders did was based on a sort of trickle-down theory. Usually when people talk about the trickle-down theory, it has to do with economics. The richer people at the top of a society become, supposedly, the more wealth there is to trickle down to the people below. It never really works out that way, of course, because if there are 2 things people at the top can’t stand, they have to be leakage and overflow. But the Elders’ scheme of having the misery of higher animals trickle down to microorganisms worked like a dream.