• No Comments

Agreeing to Disagree. STOR. Robert J. Aumann. The Annals of Statistics, Vol. 4, No. 6 (Nov., ), Stable URL. In “Agreeing to Disagree” Robert Aumann proves that a group of current probabilities are common knowledge must still agree, even if those. “Agreeing to Disagree,” R. Aumann (). Recently I was discussing with a fellow student mathematical ideas in social science which are 1).

Author: Gardale Meztik
Country: Turks & Caicos Islands
Language: English (Spanish)
Genre: Environment
Published (Last): 9 May 2006
Pages: 377
PDF File Size: 9.74 Mb
ePub File Size: 15.73 Mb
ISBN: 759-6-76359-905-7
Downloads: 12959
Price: Free* [*Free Regsitration Required]
Uploader: Vumi

For concerns on copyright infringement please see: Consider two agents tasked with performing Bayesian analysis this is “perfectly rational”.

The one-sentence summary is “you can’t actually agree to disagree”: Views Read Edit View history. All-pay auction Alpha—beta pruning Bertrand paradox Bounded rationality Combinatorial game theory Confrontation analysis Coopetition First-move advantage in chess Game mechanics Glossary of game theory List of game theorists List of games in game theory No-win situation Solving chess Topological game Tragedy of the commons Tyranny of small decisions.

Unless explicitly noted otherwise, all content licensed as indicated by RationalWiki: External links Twitter Disagree-aumqnn Discord.

More specifically, if two disagree-umann are genuine Bayesian rationalists with common priorsand if they each have common knowledge of their individual posterior probabilitiesthen their posteriors must be equal.

Aumann’s agreement theorem – RationalWiki

For such careful definitions of “perfectly rational” and “common knowledge” this is equivalent to saying that two functioning calculators will not give different answers on the same input. Views Read Edit Fossil record.


Both are given the same prior probability of the world being in a certain state, and separate sets of further information. Bayesian statistics Economics theorems Game theory Probability theorems Rational choice theory Statistical theorems.

Scott Aaronson [3] sharpens disagree-aumanj theorem dsiagree-aumann removing the common prior and limiting the number of messages communicated. In game theoryAumann’s agreement theorem is a theorem which demonstrates that rational agents with common knowledge of each other’s beliefs cannot agree to disagree.

Unlike many questionable applications of theorems, this one appears to have been the intention of the paper itself, which itself cites a paper defending the application of such techniques to the real world.

Polemarchakis, We can’t disagree forever, Journal of Economic Theory 28′: Aumann’s agreement theorem says that two people acting rationally in a certain precise sense and with common knowledge of each other’s beliefs cannot agree to disagree. Cooperative game Determinacy Escalation of commitment Extensive-form game First-player and second-player win Game complexity Graphical game Hierarchy of beliefs Information set Normal-form game Preference Sequential game Simultaneous game Simultaneous action selection Solved game Succinct game.

Aumann’s agreement theorem – Wikipedia

Community Saloon bar To do list What is going on? However, Robin Hanson has presented disagred-aumann argument that Bayesians who agree about the processes that gave rise to their priors e. Business and economics portal Statistics portal Mathematics portal.

International Journal of Game Theory. Thus, two rational Bayesian agents with the same priors and who know each other’s posteriors will have to agree.

Aumann’s agreement theorem

Nash equilibrium Subgame perfection Mertens-stable equilibrium Bayesian Nash equilibrium Perfect Bayesian equilibrium Trembling hand Proper equilibrium Epsilon-equilibrium Correlated equilibrium Sequential equilibrium Quasi-perfect equilibrium Evolutionarily stable strategy Risk dominance Core Shapley value Pareto efficiency Gibbs equilibrium Quantal response equilibrium Self-confirming equilibrium Strong Nash equilibrium Markov perfect equilibrium.


Scott Aaronson has shown that this is indeed the case. Retrieved from ” https: Studying the same issue disagree-aumanj a different perspective, a research paper by Ziv Hellman considers what happens if priors are not common.

Aumann’s agreement theorem [1] is the result of Robert Aumann’s, winner of the Swedish National Bank’s Prize in Economic Sciences in Memory of Alfred Nobelgroundbreaking discovery that a sufficiently respected game theorist can get anything into a peer-reviewed agreeng. It was first formulated in the paper titled “Agreeing to Disagree” by Robert Aumannafter whom the theorem is named.

This page was last modified on 12 Septemberat Articles with short description. From Wikipedia, the free encyclopedia.

Arrow’s impossibility theorem Aumann’s agreement theorem Folk theorem Minimax theorem Nash’s theorem Purification theorem Revelation principle Zermelo’s theorem. Scott Aaronson believes that Aumanns’s therorem can act as a corrective to overconfidence, and a guide as to what disagreements should look like. This page was last edited on 6 Octoberat The paper presents too way to measure how distant priors are from being common.