That&#x27;s not a zero-sum game, though. The total money awarded to both players isn&#x27;t the same in all outcomes. That&#x27;s the whole reason why the game isn&#x27;t purely adversarial and it makes sense to negotiate.<p>I remember seeing this clip in 2012, and back then I proposed a solution based on correlated equilibria which still seems pretty good to me:<p>&quot;We have two minutes to talk, right? I&#x27;m going to ask you to flip a coin (visibly to both of us) at the last possible moment, the exact second where we must cease talking. If the coin comes up heads, I promise I&#x27;ll cooperate, you can just go ahead and claim the whole prize. If the coin comes up tails, I promise I&#x27;ll defect. Please cooperate in this case, because you have nothing to gain by defecting, and anyway the arrangement is fair, isn&#x27;t it?&quot;