WE SAW HOW INCLUSIVE economic and political institutions emerge. But why do they persist over time? The history of the Black Act and the limits to its implementation illustrate the virtuous circle, a powerful process of positive feedback that preserves these institutions in the face of attempts at undermining them and, in fact, sets in motion forces that lead to greater inclusiveness. The logic of virtuous circles stems partly from the fact that inclusive institutions are based on constraints on the exercise of power and on a pluralistic distribution of political power in society, enshrined in the rule of law. The ability of a subset to impose its will on others without any constraints, even if those others are ordinary citizens, as Huntridge was, threatens this very balance.