Tag Archives: Robert Aumann

Harsanyi’s Sweater

Posted on April 21, 2020 by Gil Kalai

Today is the Holocaust Remembrance Day in Israel.  Here is a moving story from the  paper  about  John Harsanyi,  Harsanyi’s Sweater, by Robert J. Aumann. It is 1944 in Budapest, and John is in his early twenties. He has been … Continue reading →

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Test Your Intuition 42: How Much do you Gain by Knowing The Game You Play?

Posted on December 16, 2019 by Gil Kalai

There are two players  – the row player and the column player and there are two possible zero-sum games described in the picture below. For each of these games the row players has two strategies T (top) and Bottom (B) … Continue reading →

Posted in Games, Test your intuition | Tagged , , , | 6 Comments

Fix a Horse Race…

Posted on February 20, 2019 by Gil Kalai

GK (2019): Can you base world economy on horse races? Here is an old unpublished draft from 2008 that I did not complete, which was  inspired by the  economic crisis at that time. (It also felt a little over the … Continue reading →

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An Interview with Yisrael (Robert) Aumann

Posted on June 15, 2018 by Gil Kalai

I was privileged to join Menachem Yaari and Sergiu Hart in interviewing Yisrael Aumann.  The interview is in Hebrew. It is an initiative of the Israel Academy of Sciences and the Humanities. For our non Hebrew speakers here is in … Continue reading →

Posted in Academics, Games, Geometry, Rationality | Tagged , , | 2 Comments

Chess can be a Game of Luck

Posted on July 5, 2009 by Gil Kalai

Can chess be a game of luck? Let us consider the following two scenarios: A) We have a chess tournament where each of forty chess players pay 50 dollars entrance fee and the winner takes the prize which is 80% … Continue reading →

Posted in Controversies and debates, Economics, Games, Law, Probability, Rationality | Tagged , , , , , | 46 Comments