Macroeconomics is evolving in an almost dialectic fashion. The latest evolution is the development of a new synthesis that combines insights of new classical, new Keynesian and real business cycle traditions into a dynamic, stochastic general equilibrium (DSGE) model that serves as a foundation for thinking about macro policy. That new synthesis has opened up the door to a new antithesis, which is being driven by advances in computing power and analytic techniques. This new synthesis is coalescing around developments in complexity theory, automated general to specific econometric modeling, agent-based models, and non-linear and statistical dynamical models. This book thus provides the reader with an introduction to what might be called a Post Walrasian research program that is developing as the antithesis of the Walrasian DSGE synthesis.
• State of the art perspectives on macro theory from many of the world's leading theorists and methodologists • Also useful as a course book or supplementary textbook in graduate macroeconomics • Includes a historical section that surveys the development of macroeconomics
Part I. Where We Are in Macro and How We Got There: 1. Stories from the haunted vault: notes on a century of macroeconomics; 2. Post Walrasian macroeconomics: some historic links; 3. The DSGE model and the post Walrasian alternative in historical perspective; 4. Who is post Walrasian man?; Part II. Edging Away from the DSGE Model: 5. Social interactions and macroeconomics; 6. Macroeconomics and model uncertainty; 7. Restricted perceptions equilibria and learning in macroeconomics; 8. Not more so: some concepts outside the DSGE framework; Part III. Leaping Away from the DSGE Model: 9. Agent-based computational modeling and macroeconomics; 10. Multi-agent systems macro: a prospectus; 11. Agent-based financial markets: matching stylized facts with style; Part IV. Doing More Good than Harm: Roles of Business and Government in Critical Infrastructure Protection: 12. Characteristics of resilient systems and organizations; 13. Networks and interdependencies; 14. Public - private risk-sharing: the case of terrorism risk coverage; 15. Learning from experience: drawing correct analogies? Letting the data guide theory; 16. The past as the future: the Marshallian approach to post Walrasian macro; 17. Old world econometrics and New World theory; 18. Four entrenched notions post Walrasians should avoid; 19. Confronting the economic model with the data; 20. Extracting information from the data: a European view on empirical macro; Part V. Policy Implications: 21. Economic policy in the presence of coordination problems; 22. Monetary policy and the limitations of economic knowledge.