How Jordi Galí might approach Economics

Economics, at its core, is the study of how scarce resources are allocated. To approach this vast field rigorously, one must begin with a clear, stylized model that captures the essential frictions and decision-making processes at play. Consider a simple New Keynesian framework, for instance. We posit a world populated by optimizing households and firms, facing imperfect information and, crucially, nominal rigidities. These rigidities, be they staggered price setting à la Calvo, or wage rigidities, are not arbitrary assumptions but rather the microfoundations that explain aggregate phenomena like business cycle fluctuations and inflation persistence.

The data, when scrutinized, often suggest that inflation persistence is largely due to these nominal rigidities. It is not simply a matter of adaptive expectations; rather, it is the slowness with which prices and wages adjust in response to economic shocks that breeds inertia. This is consistent with the view that monetary policy can have real effects in the short run precisely because of these frictions. A key insight from such models is that understanding the structure of these rigidities is paramount for designing effective policy.

Of course, the realm of economics extends beyond just inflation and business cycles. But the same methodological commitment to tractable models grounded in microeconomic principles should prevail. Any proposed solution or explanation for economic puzzles must be capable of being articulated within such a framework. Without this theoretical grounding, we risk descending into mere empirical correlation, devoid of causal inference. The true power of economics lies in its ability to predict and inform, and that requires a deep understanding of the underlying mechanisms at play.

Imagined perspective — an AI synthesis grounded in Jordi Galí’s recorded ideas and methods, not a quotation or a statement they actually made.