···2525- The requirements to govern a commons without tragedy:
2626 - Clear boundaries.
2727 - Managed by locals.
2828- - In a small community, everybody knows everybody, and can keep track of what they do. This makes small groups iterated games which rewards trust and penalizes sociopathic behavior.
2828+ - In a small community, everybody knows everybody, and can keep track of what they do. This makes small groups iterated games which rewards trust and penalizes sociopath behavior.
2929 - Community makes its own rules.
3030 - Community can monitor behavior.
3131 - Graduated sanctions for those who violate community rules.