As the David Petraeus scandal spirals ever deeper into absurdity, it’s important to remember three ironclad rules of government:
1. Incompetence is a feature of bureaucracies.
2. Bureaucracies given special powers will exercise them. Incompetently.
3. This will continue, in escalating fashion, until they take it so far that a scandal erupts, and the public reacts against it and politicians act to rein it in.