The point of this "iron rule" is that those dynasties are not surprising at all. What makes a system less bad than others is damage mitigation. The power of Bus

The point of this "iron rule" is that those dynasties are not surprising at all. What makes a system less bad than others is damage mitigation. The power of Bush or a Clinton isn't quite the same as that of a Bourbon or a Romanov and, even more important, the modern day versions collapse in refreshingly unspectacular ways if they do.