How do rational expectations affect modern economic policy debates?
The principle of rational expectations remains central to modern macroeconomics. It implies that predictable government policies, especially monetary ones, may have limited long-run impact on real variables like output and employment. If agents anticipate inflation from expansionary monetary policy, they will adjust wages and prices accordingly, and the main effect will be on the price level, not real economic activity. This perspective informs discussions about the effectiveness of forward guidance, stimulus packages, and central bank credibility.
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