This game could end wars

Original by @veritasium : https://www.youtube.com/watch?v=mScpHTIi-kM

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I just watched Veritasium’s “This game theory problem will change the way you see the world”, and wow — there’s more here than just math. The Prisoner’s Dilemma teaches us about why trust is fragile, how cooperation evolves, and when conflict is inevitable. In my reaction, I’ll walk through the video’s examples (like animals grooming, human systems, and nuclear disarmament), critique the limits of applying game theory to real politics, and highlight what lessons are useful — and where they break down.

Strengths of the video: It's compelling, visually intuitive, gives real examples, and connects abstract theory to powerful concepts like trust, reciprocity, and peace.

Where the analogy is limited:
 • In life, payoffs are messy, not fixed.
 • Agents may have hidden information, external incentives, or power differences — real politics is more complex than a 2-player model.
 • Models assume rationality and repeat interaction; many real interactions are one-off or noisy.

On using this in politics / peace: The logic of “cooperate over time” plays in arms treaties or trade pacts — long shadows of the future help. But threats, trust violation, betrayal, misinformation all complicate the ideal.

Be “nice, retaliatory, but forgiving” — that combo tends to win in iterated dilemmas. Use cooperation as default but protect against exploitation. Use clarity of signal and reputation.

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