Laws Without Lawmakers: How Unwritten Rules Bind With the Force of Law

That is the kind of rule this book is about. Some of the strongest constraints we live under were never passed. They came out of repeated interaction, not anyone's intention, and they bind with the force of law and the authorship of no one. The traffic side you drive on, the precedent a judge follows, the payment term a whole industry obeys: these are conventions and customs that act like statutes and have no lawmaker behind them.

I spent years looking for the wrong person. When a norm was costing me money, I wanted a decider to lobby, an office to write to, a clause to repeal. There usually was none. The rule had emerged from how everyone behaved, and so the only thing you can actually change is the behavior that keeps it alive. I write as an operator who has lost the argument with a rule that nobody admits to having made, not as a theorist looking down on the problem.

The book draws on plain accounts of spontaneous order, David Lewis on convention as coordination without a coordinator, customary and common law as practice hardened into binding rule, and how a self-reinforcing norm resists every repeal because everyone conforms when they expect everyone else to conform. If you have ever demanded accountability from a rule and found no one home, this is for you.

Written from an Indonesian operator's vantage, but the diagnosis applies broadly to other emerging-market and small-business settings: spontaneous order, emergent norms, convention, customary law, common law, social norms, coordination, and the unrepealable rule.