Przeworski's book uses rational choice and game theory in order to demonstrate that the revolutionary strategies adopted by socialists in the twentieth century were likely to fail, since it was in the rational interests of workers to strive for the reform of capitalism through the achievement of union recognition, improved wages and living conditions, rather than adopting the risky strategy of revolution. Przeworski's book is clearly influenced by economic explanations of political behaviour advanced by thinkers such as Anthony Downs (An Economic Theory of Democracy, 1957) and Mancur Olson (The Logic of Collective Action, 1965).