>if two communists can't find an agreement, then one of them is enemy Ah, an early version of Aumann's agreement theorem. https://en.wikipedia.org/wiki/Aumann

>if two communists can't find an agreement, then one of them is enemy Ah, an early version of Aumann's agreement theorem. https://en.wikipedia.org/wiki/Aumann%27s_agreement_theorem https://en.wikipedia.org/wiki/Aumann%27s_agreement_theorem