Most late 19th-century US economists gave a rather cool welcome to the Sherman Act (1890) and, though less harshly, to the Clayton and FTC Acts (1914). A large literature has identified several explanations for this surprising attitude, calling into play the relation between big business and...

The paper presents three different reconstructions of the 1980s boom of game theory and its rise to the present status of indispensable tool-box for modern economics. The first story focuses on the Nash refinements literature and on the development of Bayesian games. The second emphasizes the...