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The prevailing theory regarding the foundation of economics is antiquated and based on an idea that people are predictable and rational. History and current trends suggest that something else might be in play. Scientists are studying the brains of people as they react to ambiguity and uncertainty. They are looking for links that might better predict preferences and how the brain reacts to problems.
Economist have know that classical models do a poor job of predicting actual economic activity for a long time. Don't get too excited by Neuroeconomics, it will probably contribute to the discipline, but once again fail to fully explain complicated economic systems.
There was a time when game theory was supposed to solve all the problems with the classical model, and other fad theories that different economist hoped would resolve all. So far none of em have proved to be Alpha and Omega, there is a reason economics is known as the dismal science.