John C Harsanyi

John C. Harsanyi Childhood and Early Life John C. Harsanyi was born on 29 of May 1920, in Budapest, Hungary. He was born to Charles Harsanyi and Alice Gombos Harsanyi, a couple who converted from Judaism to Catholicism in 1919. His father owned a pharmacy shop. John C. Harsanyi finished his high school education from Lutheran Gymnasium in Budapest. It was one of the best schools in Hungary, which proudly boasts of famous alumni like John von Neumann and Eugene Wigner. The school maintained a ‘Mathematical and Physical Monthly’ for Secondary schools and John Harsanyi topped it and became one of the best problem solvers. This periodical was founded in 1893 and had played a major role in Hungarian students' success in mathematics. Following this, he also won the first prize in the Eotvos mathematics competition conducted for high school students. Being good at analytical skills and numerical ability, he wanted to pursue mathematics and philosophy, but his father wanted him to manage the pharmacy and hence sent him to France to pursue chemical engineering from University of Lyon, in 1939. However, he returned to Hungary after World War II broke out. Harsanyi then went on to study pharmacology at the University of Budapest, which is now known as Eotvos Lorand University, and got his diploma in 1944. He skipped out from conscription into the Hungarian Army, which he was obliged to serve as a person of Jewish descent. However, in 1944, the military deferment was canceled and he was left with no other choice but to join the forced labor unit on the Eastern Front. After seven months of forced labor, he escaped from the army at a railway station in Budapest, when the Nazi authorities decided to deport his unit to a concentration camp in Austria. He then found sanctuary in a Jesuit monastery where a Jesuit priest, who was known to him, gave him refuge. Later, he got to know that his friends in the Army, who could not manage to escape, were killed eventually. Life Post-War Harsanyi re-enrolled in the University of Budapest In 1946 to obtain Ph.D. in philosophy with sociology and psychology as minors. He got his doctorate degree in June 1947. Though brought-up as a staunch Catholic devout, he abandoned Catholicism to follow atheism. He served as a faculty of the Institute of Sociology at the University of Budapest during 1947-1948. It was during this period that he met Anne Klauber, who became his better half later. She used to be his student. His strong anti-Marxist views played against him and he had to resign from his job in June 1948. However, Anna continued with her course, but faced immense pressure from her communist classmates to sever all ties with him. However, withstood all oppositions and stayed with him. Anna realized that Hungary was proceeding towards complete Stalinism and the only sensible thing to do was to leave the country. Thus, in April 1950, after selling his father’s pharmacy, they crossed Hungarian border illegally. They chose a marshy terrain to run off as it was less guarded compared to other border areas and crossed the border safely without being spotted by any border forces. Anne Klauber always stood by him, supporting him emotionally, and this helped him a lot to encounter the difficult situations in life. They spent several months in Austria to get landing permits from Australia and on 30 December 1950, they reached Sydney, Australia, where Klauber’s parents had some friends. On January 2, 1951, he married Anne. Life At Australia Problems didn’t stop chasing Harsanyi even in Australia. His Hungarian degrees were not recognized in Australia, but, to his comfort, the Australian authorities permitted to admit him to the University of Sydney for a Master's degree. However, he underwent a change of interest during those days. He switched from sociology to economics, attracted by the conceptual and mathematical elegance of economic theory. Harsanyi worked hard by taking up a job in a factory during the day and learned economics in the evening. He earned his master’s degree in economics in 1953. His research papers started appearing in various economic journals like the ‘Journal of Political Economy’ and the ‘Review of Economic Studies’. He then took up a teaching position at the University of Queensland in Brisbane, in 1954. Anne Klauber, his wife, worked as a fashion designer for a small factory during this time. Later Years Harsanyi carried on with his efforts to pursue economics and managed to get a Rockefeller scholarship following which he shifted to United States along with his wife in 1956. He spent the next two years in states. He enrolled in a course at Stanford University and took a second doctorate degree from Stanford after submitting a dissertation under the supervision of Kenneth Arrow. He had many beneficial discussions about many concepts of economic theory with Kenneth Arrow, who also advised him to take up mathematics and statistics lessons. These studies proved very useful in his game theory. Meanwhile, Anne Klauber completed M.A. in psychology. Harsanyi returned to Australia in 1958 after his student visa expired. After reaching Australia, Harsanyi worked as a researcher at the Australian National University in Canberra for a short while. Being frustrated with the games theory, he wanted to move on to something else. Thus, with the help of Kenneth Arrow and James Tobin, Harsanyi relocated to United States and joined Wayne State University in Detroit as a professor of economics in 1961. He worked there for three years and in 1964, he moved to Berkeley, California. He worked there for the rest of his career and retired in 1990. Even during this time, he did not give up his research in game theory and worked as a part of a team of game theorists who advised the United States Arms Control and Disarmament Agency. This was done in collaboration with Mathematica, which is a consulting group from Princeton University led by Harold Kuhn and Oskar Morgenstern. He was awarded the prestigious Nobel Prize in Economics in the year 1994. John Harsanyi suffered from Alzheimer's disease during his elderly ages and died from heart attack in 2000 while in Berkeley. This great economist is survived by his son, Tom Harsanyi, who works at Harvard University. Game Theory Harsanyi once came across John Nash’s contributions and this triggered the idea of game theory in him. Nash, in his works had focused on those games in which each player knew the fellow players’ preferences. This caused a spark in Harsanyi and he wondered how things would change if the players did not have any idea about other players’ preferences. In his games theory, he assumed that “each player is one of several types and each type represents a set of possible preferences for the player and a set of subjective probabilities that that player places on the other players’ type. Each player then chooses a strategy for each of his types”. Harsanyi also showed that “for every game with incomplete information, there is an equivalent game with complete information”. Harsanyi contributed to moral philosophy as well. John Harsanyi’s Important Works "Cardinal Utility in Welfare Economics and in the Theory of Risk-Taking" in Journal of Political Economy, 1953. "Cardinal Welfare, Individualistic Ethics and Interpersonal Comparisons of Utility" in Journal of Political Economy, 1955. "Bargaining in Ignorance of the Opponent's Utility Function" in Journal of Conflict Resolution, 1962. "Games with Incomplete Information Played by "Bayesian" Players, I-III. Part I. The Basic Model" in Management Science, 1967. “Essays on Ethics, Social Behavior, and Scientific Explanation” (book published by Reidel Publishing Company), 1976. “Rational Behavior and Bargaining Equilibrium in Games and Social Situations” (book), 1977. “Papers in Game Theory” (book published by Reidel Publishing Company), 1982. “A General Theory of Equilibrium Selection in Games” (book written along with ReinhardSelten) published by MIT-Press, 1988. Awards Nobel Prize in Economics, 1994.