Aumann's Agreement Theorem is Fifty Years Old


There is just one problem: the parties involved need to actually communicate. See Jenann Ismael - Laplace meets Godel: How Self reference Foils Prediction. 

He developed this theorem in discussion with Kenneth Arrow. See Rationality of Self and Others in an Economic System. 

27:10 On agreeing about where we want to be, see Phytomining September 23, 2025.

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