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@JesusFerna7026 Avatar @JesusFerna7026 Jesús Fernández-Villaverde

Jesús Fernández-Villaverde posts on X about safely, theory, the world, san diego the most. They currently have XXXXXX followers and XXX posts still getting attention that total XXXXXX engagements in the last XX hours.

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Social Influence

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Social topic influence safely #836, theory #1683, the world, san diego, germany, spain, afd, topics, business, markus

Top Social Posts

Top posts by engagements in the last XX hours

"Let me explain why I believe modern economics is such a powerful tool for understanding the world. Ill do this by discussing a great paper by Simone Cerreia-Vioglio @UncertainLars Fabio Maccheroni and Massimo Marinacci Making Decisions Under Model Misspecification published in the Review of Economic Studies a few months ago. Imagine I want to drive from UC San Diego to UCLA but Ive never driven that route before. I need to build a model of the world to guide me which we usually call a map. Maps are simplified representations of reality. They cant include every detail if theyre to be useful."
X Link 2025-10-30T17:49Z 35.5K followers, 342.1K engagements

"Very happy to see my paper How substitutable are the classical and radical right with Carlos Sanz (at the Banco de Espaa and CEMFI) published in the Journal of Public Economics. The paper addresses a simple question: take a party of the classical right (e.g. CDU in Germany or PP in Spain) and a party of the radical right (e.g. AfD in Germany or Vox in Spain). Are these parties substitutes (i.e. voters think they are two slightly different flavors of the same political platform) or complements (i.e. voters think each party is sufficiently different from the other) Note that the question is not"
X Link 2025-11-25T14:07Z 35.5K followers, 62.4K engagements

"A guide for students of economics: Ten statements that demonstrate that someone does not understand modern economics or what an equilibrium is and that you can safely ignore everything else they say. X. Equilibrium means the economy is stable or at rest. Many assume that an equilibrium is a peaceful state with no forces at play. Instead an equilibrium is just an arrangement of actions and expectations over time that are mutually consistent. It can be locally unstable explosive or fragile. Nothing in the definition of equilibrium implies stability. X. Equilibrium implies optimality or social"
X Link 2025-11-28T17:53Z 35.5K followers, 614.5K engagements

"Reading some of the comments on my post about the confusion over the meaning of equilibrium in economics I have seen a few common but highly misleading responses. The most common is that my use of the word equilibrium and its implications is new or that I am redefining what the dictionary says or more perversely trying to muddle things up. No not all. I am using the concept of equilibrium that has been XXX% standard in all mainstream economics programs worldwide for half a century. I am including three photos. The first two are from my copy of Microeconomic Theory by Andreu Mas-Colell Michael"
X Link 2025-11-29T16:21Z 35.5K followers, 130.9K engagements

"In 2013 Markus K. Brunnermeier (@MarkusEconomist) invited me to give a guest lecture in his Princeton graduate course on two venerable topics: the Cambridge capital controversy and Austrian business cycle theory. I put together a set of slides for what I recall was a 75-minute session; fun to teach but never meant as a definitive treatment. Yesterday @ecorami noted that I had once mentioned the Cambridge debate in passing in Spain and that he was working on something related. So I uploaded my old slides as is. To my surprise (given that it was a reply to a reply and in Spanish) the post"
X Link 2025-12-02T17:01Z 35.5K followers, 114.3K engagements

"David Andolfatto (@dandolfa) has reposted an old but excellent essay on DSGE models and equilibrium. I link it here because it is well worth a slow careful reading. At some point we must speak plainly: most attacks on mainstream economics constitute a familiar cocktail of confusion ignorance and moralistic posturing. The critics often shout the loudest precisely where their understanding is thinnest. Is mainstream economics flawless Of course not. I have been publicly and repeatedly critical of various aspects of it and I will continue to be. Serious fields evolve through internal debate not"
X Link 2025-11-30T15:08Z 35.5K followers, 73.6K engagements

"I do not think that interpretation is correct. Double descent says that an overparametrized model with a built-in regularization often performs better than an underparametrized model in a class of DGPs. It never ever says that an overparametrized model can learn well about data it has never seen before. I am writing a paper with @MahdiKahou making that point in detail"
X Link 2025-12-09T19:04Z 35.5K followers, 11.2K engagements

"Yesterday I had some harsh words about the current state of much of heterodox economics. That criticism does not mean I believe mainstream economics is the only game in town. On the contrary some of the traditions that sit outside the mainstream have taught me a great dealwhen they are rigorous transparent and analytically serious. Perhaps the tradition I admire the most is Analytical Marxism and especially the work of John Roemer: My favorite of Roemers books is Analytical Foundations of Marxian Economic Theory which I devoured one frigid January in Minnesota during graduate school. In this"
X Link 2025-12-01T12:00Z 35.5K followers, 303.4K engagements

"Few people in the profession are more impressive than Darrell Duffie. If you work in finance or in macro with asset prices chances are youve spent time with his textbook Dynamic Asset Pricing Theory. I learned much of what I know about the subject by working through the second edition in graduate school. Duffie also combines superb technical expertise with deep institutional knowledge. Therefore his recent column with Donald R. Wilson Jr. The case for a new floating rate Treasury note is well worth reading: Their argument: Perpetual Overnight Rate Treasury Securities (PORTS) could provide a"
X Link 2025-12-05T14:22Z 35.5K followers, 24.9K engagements

"A genuine question: How can you tell when a science book written for the general public is good and reflects the mainstream view of the best researchers in the field (what Thomas Kuhn would have called normal science) I ask because I often compare this with economics. There are fantastic books on economics for a general audience. For example The Winners Curse: Behavioral Economics Anomalies Then and Now by @R_Thaler and @alexolegimas which came out a couple of months ago is genuinely good. I would recommend it to anyone interested in the state of behavioral economics. But I can also cite many"
X Link 2025-12-08T18:12Z 35.5K followers, 125.7K engagements

"Yesterday the U.S. seized the oil tanker Skipper off the coast of Venezuela (included pic). This seizure highlights the key role that the dark fleet plays in the global oil market. Together with @YiliangLi_ Le Xu and @FZanettiOxford I have spent much of the last year thinking about this market: While I have posted about this work before given the recent discussion on X about modern economics data and artificial intelligence I want to revisit it as I believe it is also a perfect example of the marvelous findings that can be documented using machine learning in economics and how the future of"
X Link 2025-12-11T14:35Z 35.5K followers, 166.3K engagements