The Persistence of Economic Paradigms: A Historical Critique of Modern Economic Thought and Methodology

This podcast episode critically examines the prevailing notion that the newest economics is inherently the best economics, challenging the linear view of scientific progress often applied to natural sciences. It argues that unlike fields like medicine, where older knowledge is largely obsolete, the history of economic thought offers crucial insights into the discipline's persistent ideas and methodological shortcomings. The speaker introduces the philosophies of science by Thomas Kuhn and Imre Lakatos to explain how economic paradigms and research programs maintain their dominance, even in the face of empirical failures or internal inconsistencies. This persistence is attributed not just to intellectual rigor but also to the self-serving interests of the existing professional community, which invests in established forms of knowledge and resists radical change.

The discussion delves into Kuhn's concept of a "paradigm" as a hardwired way of doing science within a community, directing research and furnishing tools. Paradigm shifts, such as the Copernican revolution in astronomy or the replacement of phlogiston in chemistry, are rare in economics, with only the marginal revolution and the Keynesian revolution being strong candidates. However, even the Keynesian challenge was largely repelled by integrating its insights as "exceptions" within the existing framework. Lakatos's "research program" provides a more elaborate explanation, featuring a "core" of basic axioms and techniques protected by an "outer belt" where conflicts occur without fundamentally altering the core. The inherent difficulty in empirically disproving economic theories further strengthens this protective belt, making radical refutation challenging.

The episode highlights several persistent methodological critiques against mainstream economics. These include unreal behavioral assumptions, particularly the portrayal of humans as calculating machines, which ignores the complexity of actual motives and "animal spirits." Excessive mathematization is another major point of contention, with critics arguing it often conceals ephemeral content behind formidable algebraic fronts, yielding indifferent practical results and serving more as a benchmark of competence than a tool for genuine understanding. Furthermore, economics' claims to universal truth, treating human behavior as uniform across all times and places, are challenged by historical schools of thought that emphasize context-specific validity.

Finally, the demand for "tight micro foundations"—the idea that macroeconomic outcomes must be derived from individual optimizing agent calculations—is presented as a key defense mechanism against alternative theories like Keynes's, which posited that aggregate behavior cannot simply be summed up from individual rationality. The speaker concludes by emphasizing the strong institutional defenses within the economics profession, including journal gatekeeping and funding incentives, which favor orthodox research and marginalize dissent. Studying the history of economic thought, therefore, becomes an empowering act for those with "heretical ideas," allowing them to find precursors and confidence in their critiques, recognizing that their doubts have been voiced by great thinkers of the past.

the main reason then for studying the history of economic thought is to question the claim that the newest economics is the best economics

The more perfect a science becomes, the shorter becomes its history. Our duty with regard to errors is not to revive them, but simply to forget them.

why didn't the best economic forecast the crash of 2008 2009

I think economics has been shrinking in its understanding of what goes on as it's become more and more mathematical

you may penetrate the secret of what I call persistence without progress

a paradigm is a way of doing a science he says which becomes hardwired into the psychology and the structure of the scientific community

the function of the protective belt in the whale akatosh sees it is to prevent a premature rejection of the core

un critical enthusiasm from madacorp formulation tends to conceal the ephemeral substantive content of the argument behind the formidable front of algebraic signs

humanity should be on guard against all generalization of ideas that causes us to lose sight of the facts

it cannot be denied that there is something scandalous and the spectacle of so many people refining the analysis of economic states which they give no reason to suppose ever will or ever have come about

the validity of any economic law is confined to the period and the place in which it's developed

human beings in their behavior they were motivated often by what he called animal spirits and by conventions and periods of excitement and depression