If human nature is bad then hierarchy should be abolished because those on the top will inevitably abuse their power. If human nature is good then there is no need for hierarchy because people will do good things without being dominated by others. Either way, we should have anarchy. If people are too evil to rule themselves then they are far too evil to rule other people.
@rowan And that is the basic wisdom of anarchism:
Even if there seems to be a good reason for some limited form of hierarchy, you should mistrust it.
Does a foreman or leader makes sense in a lot of situations? Yes.
But you should be ready to dismantle that throne the moment the situation is over.