Thomas Hobbes imagined a world with no common power to keep people in awe. In it, he wrote, life is “solitary, poor, nasty, brutish, and short” — a war of all against all, because when taking beats sharing, everyone takes.
His cure is drastic: everyone hands their power to a sovereign. Peace is bought, but the price is liberty. John Locke answered with a lighter hand — a state that mostly just enforces rights, leaving people free.
Here each citizen plays a Hawk–Dove game over a shared commons. Raise enforcement and predators are fined and fights are broken up, so cooperation finally pays — the dashed gold curve is the predicted cooperation, and the society drifts onto it.
Keep it honest: this is a toy model of a thought experiment, not a claim about real societies. Real people cooperate for reasons far richer than payoffs. The point is to make the trade-off visible, not to prove it true.
Something in the simulation stopped unexpectedly — the lesson continues without it. Nothing you did was wrong; you can move on.