[A]ll the papers in the collection concern game theory, its applications and its tools. Beyond the subject matter, they also share a common methodological theme: they deal withrelationships. Science is often characterized as a quest for truth, where truth is something absolute, which exists outside of the observer. ButI view science more as a quest for, the scientist. Such understanding is best gained by studying relations - relations between different ideas, relations between different phenomena, relations between ideas and phenomena.understanding, where the understanding is that of the observer

(...)

Indeed, theAumann's message forward toidea of relationship is fundamental to game theory. Disciplines like economics or political science use disparate models to analyze monopoly, oligopoly, perfect competition, public goods, elections, coalition formation, and so on. In contrast, game theory uses thesametools in all these applications. (...) Perhaps themost exciting advance in game theory in recent years has been the connection with evolution: The realization that when properly interpreted, the fundamental notion of Nash equilibrium, which a priori reflects the behavior of consciously maximizing agents, is thesameas an equilibrium of populations that reproduce blindly without regard to maximizing anything.

*Two-Sided Matching: A Study in Game-Theoretic Modeling and Analysis*by Roth and Sotomayor (1990), which he describes as a book chronicles one of the

**outstanding success stories of the theory of games**, is also insightful. I again share his view on evaluating the good "matching" of theory and practice.

The theoretical part of the story begins in 1962, with the publication of the famous Gale-Shapley paper, "College Admissions and the Stability of Marriage." Since then, a large theoretical literature has grown from this paper, which is thoroughly covered in this book. But themost dramatic development came in 1984, when Roth published his discovery that the Gale-Shapley algorithm had in fact been in practical use already since 1951 for the assignment of interns to hospitals in the United States; it had evolved by a tirial-and-error process that spanned more than half a century.