# ![@JesusFerna7026 Avatar](https://lunarcrush.com/gi/w:26/cr:twitter::1807440907647565824.png) @JesusFerna7026 Jesús Fernández-Villaverde

Jesús Fernández-Villaverde posts on X about espaa, sistema, aos, uno the most. They currently have [------] followers and [---] posts still getting attention that total [-------] engagements in the last [--] hours.

### Engagements: [-------] [#](/creator/twitter::1807440907647565824/interactions)
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- [--] Week [---------] +518%
- [--] Month [---------] +138%
- [--] Months [----------] +83%
- [--] Year [----------] +364,531%

### Mentions: [--] [#](/creator/twitter::1807440907647565824/posts_active)
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- [--] Week [--] +73%
- [--] Month [---] +264%
- [--] Months [---] +120%
- [--] Year [---] +13,667%

### Followers: [------] [#](/creator/twitter::1807440907647565824/followers)
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- [--] Week [------] +1.20%
- [--] Month [------] +15%
- [--] Months [------] +127%
- [--] Year [------] +33,896%

### CreatorRank: [------] [#](/creator/twitter::1807440907647565824/influencer_rank)
![CreatorRank Line Chart](https://lunarcrush.com/gi/w:600/cr:twitter::1807440907647565824/c:line/m:influencer_rank.svg)

### Social Influence

**Social category influence**
[countries](/list/countries)  11.76% [finance](/list/finance)  5.88% [travel destinations](/list/travel-destinations)  #1635 [luxury brands](/list/luxury-brands)  0.98% [automotive brands](/list/automotive-brands)  0.98% [stocks](/list/stocks)  0.98% [technology brands](/list/technology-brands)  0.98%

**Social topic influence**
[espaa](/topic/espaa) #62, [sistema](/topic/sistema) #91, [aos](/topic/aos) #1825, [uno](/topic/uno) #466, [mucho](/topic/mucho) #37, [muy](/topic/muy) #1231, [eso](/topic/eso) #729, [lo](/topic/lo) #1652, [porque](/topic/porque) #1183, [hay](/topic/hay) #1892

**Top accounts mentioned or mentioned by**
[@demiranda123](/creator/undefined) [@gonzalosevilla2](/creator/undefined) [@k1915580392](/creator/undefined) [@bocazas5757](/creator/undefined) [@noseque97973600](/creator/undefined) [@lm_guirola](/creator/undefined) [@aragoneselion](/creator/undefined) [@contrainvest](/creator/undefined) [@mazeltov86](/creator/undefined) [@ggga1357](/creator/undefined) [@josasis](/creator/undefined) [@mrtnzalvrz](/creator/undefined) [@srafletcher9](/creator/undefined) [@oempecinado](/creator/undefined) [@chuisti](/creator/undefined) [@dieterlaan19838](/creator/undefined) [@bruscosandro](/creator/undefined) [@luisabeledo](/creator/undefined) [@clotildo1999](/creator/undefined) [@marquesultra](/creator/undefined)
### Top Social Posts
Top posts by engagements in the last [--] hours

"Very glad to see that Hanno Lustig (@HannoLustig) and Romain Wacziarg (@RWacziarg) have started a Substack: Both are outstanding economists with fundamental contributions to macroeconomics and political economy (among other areas). Almost as important Hanno works on issues like bonds and safe assets and Romain on topics such as fertility and culture all of which are close and dear to my heart. For instance Hanno wrote yesterday about the fiscal backing that a safe asset requires which is central to what I posted last week on international currency dominance. It is genuinely commendable that"  
[X Link](https://x.com/JesusFerna7026/status/2019395522893656230)  2026-02-05T12:59Z 46.5K followers, 31.2K engagements


"I have spent the last couple of days looking at convergence in East Asian economies (Japan South Korea China etc.) toward the U.S. The figure below uses the recently released Penn World Table (PWT) release 11.0: In orange it plots TFP growth in China and in a representative East Asian economy (an average across these economies) always relative to the U.S. A value of 2% in [----] in the left panel means that Chinas TFP grew [--] percentage points faster than U.S. TFP in that year. In blue I plot average relative TFP growth over 15-year windows. For China the series starts in [----] with the beginning"  
[X Link](https://x.com/JesusFerna7026/status/2007129679979790752)  2026-01-02T16:39Z 46.2K followers, 86.6K engagements


"There was a viral yet inaccurate post yesterday by @politicalmath about Chinas population: that many commentators have repeated on my own post: @politicalmath begins with a factual error and then compounds it with a logical fallacy. The factual error is the assumption that the one-child policy immediately reduced Chinas total fertility rate to one. This is false. First there were always dozens of exemptions to the policy. For example according to data compiled by Sarah Mellors Rodriguez by [----] only 35.4% of the population was unable to claim at least one exemption. Second enforcement was"  
[X Link](https://x.com/JesusFerna7026/status/2013951574322659731)  2026-01-21T12:27Z 46.1K followers, 49.8K engagements


"The [----] Revision of World Population Prospects from the UN Population Division (2024 WPP) has serious credibility problems both in data accuracy and in projection plausibility. This matters because it undermines rational demographic discussion. Heres the pattern: I present recent data from national statistical institutes and someone counters with [----] WPP figures either directly or via websites and AI tools that draw from it. The disconnect has become impossible to ignore. Let me illustrate with Chinas birth data from [----] to [----] plotted against the [----] WPP estimates and projections. In"  
[X Link](https://x.com/JesusFerna7026/status/2014736095381012896)  2026-01-23T16:24Z 46.1K followers, 44.5K engagements


"One key aspect of the recent global fertility decline is that it affects different groups unevenly. For example much of the recent fall appears concentrated among groups with lower average income or educational attainment. This represents a reversal relative to earlier historical patterns in which fertility tended to be higher among groups with lower income or education. This shift is visible both across countries and within countries. Across countries the U.S. now has higher fertility than countries such as China Turkey Iran Brazil Colombia Sri Lanka Thailand or Jamaica (to cite only a few"  
[X Link](https://x.com/JesusFerna7026/status/2015090092029649112)  2026-01-24T15:51Z 46.1K followers, 182.3K engagements


"One aspect of Keynes thought that is often overlooked is his concern about population. For example one reason he opposed the Versailles Treaty was his belief that Europe required a sophisticated division of labor to prevent mass starvation. Later in life in [----] he expressed serious worries that population would begin to shrink within a few decades leading to secular stagnation and underinvestment (see the excerpt from his [----] Galton Lecture below). In the case of the UK he was not far off. UK fertility has been below the replacement rate without interruption since [----] (so much for the"  
[X Link](https://x.com/JesusFerna7026/status/2015465282647585239)  2026-01-25T16:42Z 46.1K followers, 39K engagements


"Few facts are more surprising than that as of early [----] Latin America has a lower fertility rate than the U.S. reversing a long-standing historical pattern. I was therefore very glad to see this morning a truly fascinating paper by Milagros Onofri Ins Berniell (@InesBerniell) Raquel Fernndez (@raquel1fernan) and Azul Menduia on Latin Americas recent fertility decline at @nberpubs: Understanding Latin Americas Fertility Decline: Age Education and Cohort Dynamics I have not yet had time to fully digest all its findings but I will be reading it repeatedly over the next few weeks. From a first"  
[X Link](https://x.com/JesusFerna7026/status/2015783960568012861)  2026-01-26T13:48Z 46.1K followers, 134.6K engagements


"Every time I post about fertility decline someone in the comments asks: why dont you talk about contraception Isnt that the obvious explanation This has nothing to do with contraception being a taboo topic. There are plenty of papers in top economics journals studying the effects of contraception on fertility. For example I include a screenshot of an outstanding paper by Pascaline Dupas (@DupasPascaline) Seema Jayachandran Adriana Lleras-Muney (@LlerasMuney) and Pauline Rossi which appeared in the American Economic Review a few months ago. The issue is statistical and it goes back to the very"  
[X Link](https://x.com/JesusFerna7026/status/2015871921972191284)  2026-01-26T19:38Z 46.1K followers, 51.9K engagements


"A reader Roberto Gmez (@Roberto08061521) left me a comment on one of my latest posts with some numbers he computed for Argentina on the average number of children per cohort (by age of women). I copy one of his figures. At least for Argentina there is not much evidence so far that delayed timing in childbearing will substantially change the basic observation: a fast and unprecedented drop in fertility. Is there delayed timing Yes. Is it a first-order explanation No. And before people tell me: Argentina had such a big economic crisis Yesterday I showed similar figures for many other countries."  
[X Link](https://x.com/JesusFerna7026/status/2016283663139537136)  2026-01-27T22:54Z 46.1K followers, 16.4K engagements


"@_Herce 😀 Given my age my safe withdrawal rate (the annuity I can pay myself from my financial wealth and the historical performance of my portfolio) is [-----------] pretty close to 5%"  
[X Link](https://x.com/JesusFerna7026/status/2016921426721223008)  2026-01-29T17:08Z 45.9K followers, [----] engagements


"Las caractersticas electorales de las regiones evolucionan con el cambio social a veces de manera profunda. Uno de mis ejemplos favoritos es Londres. Por mucho tiempo los conservadores obtenan slidas mayoras parlamentarias entre los miembros del Parlamento elegidos en Londres. En el pantallazo adjunto (de wiki) se muestra la tabla de resultados de los Tories en el rea del Gran Londres. En los aos [--] y [--] los conservadores obtenan claras mayoras en el Gran Londres (como en [----] [--] de [--] diputados) o se mantenan incluso cuando a nivel nacional flojeaban (como en octubre de [----] [--] de 92"  
[X Link](https://x.com/JesusFerna7026/status/2019897013978947978)  2026-02-06T22:12Z 46.1K followers, 62.7K engagements


"@brusco_sandro 😂 The R2 falls quite a bit but the beta not that much"  
[X Link](https://x.com/JesusFerna7026/status/2020539797446480073)  2026-02-08T16:46Z 46.1K followers, [---] engagements


"@brusco_sandro Ramsey was born relatively early (1903) so it does not contradict my point that being born later matters much for longevity"  
[X Link](https://x.com/JesusFerna7026/status/2020541256636530901)  2026-02-08T16:52Z 46.1K followers, [---] engagements


"@riclbscholar Lo mismo. Ya pas hace unos aos en Andaluca"  
[X Link](https://x.com/JesusFerna7026/status/2020639577606881698)  2026-02-08T23:23Z 46.1K followers, [----] engagements


"Solo hay que escuchar a @CarlosHQuero hablar por [--] minutos para darte cuenta de que tiene [--] puntos de IQ ms que Espinosa de los Monteros y que adems es culto. De hecho casi seguro que @CarlosHQuero hubiera aprobado contabilidad financiera en primera convocatoria (aunque en honor a la verdad no es algo muy difcil)"  
[X Link](https://x.com/JesusFerna7026/status/2020641398085619866)  2026-02-08T23:30Z 46.1K followers, 76.4K engagements


"@Teo_opinion @luisabeledo Pues conoce usted a pocos votantes de Vox. Yo conozco a muchsimos que saltaron de alegra al librarse de l. En todo caso comparar a Espinosa de los Monteros con Carlos Hernndez Quero es como comparar un Trabant de Alemania del Este con un Aston Martin"  
[X Link](https://x.com/JesusFerna7026/status/2020645709595426832)  2026-02-08T23:47Z 46.1K followers, [----] engagements


"@clotildo1999 @MarquesUltra @luisabeledo OD-P Ah me has perdido 😂😂😂😂"  
[X Link](https://x.com/JesusFerna7026/status/2020646381611110784)  2026-02-08T23:50Z 46.1K followers, [---] engagements


"@RecesvintoSpain Tengo que mirarlo en detalle empleando microdatos. Mi hiptesis ahora mismo es que el 50% de los votantes de SALF se iran a Vox el 50% a la abstencin"  
[X Link](https://x.com/JesusFerna7026/status/2020866331885572226)  2026-02-09T14:24Z 46.1K followers, [---] engagements


"@clotildo1999 @MarquesUltra Quien es ODP"  
[X Link](https://x.com/JesusFerna7026/status/2020971543736570058)  2026-02-09T21:22Z 46.1K followers, [---] engagements


"@DeMiranda123 @Jongonzlz @chunta @obloque Porque a los del BNG no les da la cabeza para ms. Son muy torpes. Pedir un concierto para Galicia una regin que recibe transferencias fiscales brutales del resto de Espaa es como que un cerdo haga propaganda del jamn serrano"  
[X Link](https://x.com/JesusFerna7026/status/2021208931914121424)  2026-02-10T13:05Z 46.1K followers, [---] engagements


"@DeMiranda123 @Jongonzlz @chunta @obloque Depende de qu haces con la SS. Pero olvidndonos de ella con un cupo real de cero (no negativo como ahora; cero sigue siendo un chollo porque es no pagar nada de los gastos comunes) el PV y Navarra tendran que rebajar su gasto en un 20%"  
[X Link](https://x.com/JesusFerna7026/status/2021214821979484589)  2026-02-10T13:29Z 46.1K followers, [---] engagements


"In any case your point is a good reminder to outsiders obsessed with the ideological biases of economists: when I talk with the best researchers nowadays more often than not I cannot tell their politics beyond pure statistical inference (e.g. a high-income highly educated man in his 50s living in northern California usually votes x)"  
[X Link](https://x.com/JesusFerna7026/status/2021961140499058780)  2026-02-12T14:54Z 46.2K followers, [---] engagements


"@ggga1357 @ChrisPhelanEcon Who remembers today "Production of Commodities." except four weirdos at heterodox departments "Production of Commodities." was an enormous waste of time"  
[X Link](https://x.com/JesusFerna7026/status/2021983362177798469)  2026-02-12T16:22Z 46.1K followers, [---] engagements


"@noseque97973600 @ggga1357 @ChrisPhelanEcon I realized that. His comments are usually quite shallow but today he outdid himself. Do not read any of the books he recommended. This one A History of Economic Theory and Method Sixth Edition 6th Edition by Robert B. Ekelund Jr. and Robert F. Hbert"  
[X Link](https://x.com/JesusFerna7026/status/2022038973422678288)  2026-02-12T20:03Z 46.1K followers, [---] engagements


"@ciencia_invest @lefineder But remember that China was conquered. China was part of the Manchu empire in the same way that Peru was part of the Spanish empire. That is what so many people forget"  
[X Link](https://x.com/JesusFerna7026/status/2022163386738651275)  2026-02-13T04:18Z 46.2K followers, [---] engagements


"Ese argumento es totalmente vaco. El artculo [--] de la CE dice: "Los poderes pblicos garantizarn mediante pensiones adecuadas y peridicamente actualizadas la suficiencia econmica a los ciudadanos durante la tercera edad." Es el ejemplo perfecto de lo que en derecho se llama un principio jurdico indeterminado: no hay criterio objetivo que indique qu es "adecuado" o "suficiencia econmica". Como la jurisprudencia del TC ha sealado mil veces esto quiere decir que el artculo [--] de la CE es nicamente un criterio rector de la poltica econmica es decir algo que el legislador debe considerar como una"  
[X Link](https://x.com/JesusFerna7026/status/2022683479327019461)  2026-02-14T14:44Z 46.2K followers, [----] engagements


"@polis_data Ese no es mi punto (mi posicin sobre la inmigracin es de sobra conocida). El punto es que todo sistema intertemporal (el que sea) necesita nuevas generaciones. Llamar a un sistema intertemporal "Ponzi" solo por ser intertemporal es absurdo"  
[X Link](https://x.com/JesusFerna7026/status/2022705167146385852)  2026-02-14T16:11Z 46.2K followers, [---] engagements


"Solo me voy a centrar en el ltimo punto. Aunque es cierto que a largo plazo el rendimiento de inversiones crecimiento del PIB no lo es en el plazo de jubilacin de una persona (unos 20-30 aos). Si uno se jubila en [----] en Espaa te tragas una cada de la bolsa en valor real del 80% (le pas a mi abuelo) y te quedas en el sitio. Es increblemente difcil crear carteras de inversin que no estn sujetas a este "sequencing risk". Uno de mis mejores amigos se dedic a esto toda su vida y tiene un gran blog al respecto: y mi queridsima mujer se dedica a analizar "sequencing risk". Los dos a parte de tener"  
[X Link](https://x.com/JesusFerna7026/status/2022712494725230723)  2026-02-14T16:40Z 46.2K followers, [--] engagements


"De verdad la gente no sabe leer. Escribo en el post que la TIR efectiva del sistema en Espaa (considerando la legislacin actual de prestaciones e ingresos) es del 57% mientras que la TIR sostenible es del 21%. La frmula NO es para comparar con un sistema de capitalizacin es para calcular la sostenibilidad del sistema"  
[X Link](https://x.com/JesusFerna7026/status/2022714767081672777)  2026-02-14T16:49Z 46.2K followers, [---] engagements


"Vamos a ver: la TIR efectiva la determina la legislacin (y en menor medida la esperanza de vida). Mientras no cambien la legislacin la TIR efectiva seguir siendo 57%. Por eso no es sostenible y probablemente se cambie la legislacin (como se viene haciendo por otra parte desde 1985). https://twitter.com/i/web/status/2022715206242099671 https://twitter.com/i/web/status/2022715206242099671"  
[X Link](https://x.com/JesusFerna7026/status/2022715206242099671)  2026-02-14T16:51Z 46.2K followers, [---] engagements


"@CaceroloHD @PEDR0VALDIVIA S pensar que eliminar [------] millones de duplicidades es como creer en los Reyes Magos cuando se tiene ms de [--] aos: https://x.com/JesusFerna7026/status/2022312585060614388 I learned from a great Spanish economist many years ago that so many hate economists because they play in policy discussions the same role as the kid who told you in second grade that Santa Claus does not exist (well since this was in Spain the Reyes Magos). You know it is https://x.com/JesusFerna7026/status/2022312585060614388 I learned from a great Spanish economist many years ago that so many"  
[X Link](https://x.com/JesusFerna7026/status/2022716580677771362)  2026-02-14T16:56Z 46.2K followers, [---] engagements


"@DrCarlosToscano No es incorrecto. https://x.com/JesusFerna7026/status/2022708812268892236 Veo que hay muchos lectores muy torpes que aprobaron las matemticas de bachillerato de chiripa. As que un ejemplo sencillo con los parmetros de Japn: n = [----] (una cada de la poblacin de un 1% anual) g = [----] (un crecimiento de la productividad de un 2% anual) TIR https://x.com/JesusFerna7026/status/2022708812268892236 Veo que hay muchos lectores muy torpes que aprobaron las matemticas de bachillerato de chiripa. As que un ejemplo sencillo con los parmetros de Japn: n = [----] (una cada de la poblacin de"  
[X Link](https://x.com/JesusFerna7026/status/2022716951760441802)  2026-02-14T16:57Z 46.2K followers, [---] engagements


"Uno tiene un problema de sequencing risk brutal si lo metes en S&P500. Incluso con un target-date glide path te tragas una cantidad de riesgo brutal. Un sistema sensato tiene que tener un pilar de reparto u un pilar de capitalizacin. No darse cuenta del sequencing risk es no haber pensado en el tema por ms de [--] minutos. https://twitter.com/i/web/status/2022723523517817100 https://twitter.com/i/web/status/2022723523517817100"  
[X Link](https://x.com/JesusFerna7026/status/2022723523517817100)  2026-02-14T17:24Z 46.2K followers, [----] engagements


"@K1915580392 @piromorfit23379 No. Y si usted sabe cmo inmunizarlos enveme su CV que el lunes le hacemos una oferta de ctedra de asset pricing en Wharton"  
[X Link](https://x.com/JesusFerna7026/status/2022727782510289255)  2026-02-14T17:40Z 46.2K followers, [---] engagements


"@MoigreM Pero entonces yo no llamara a ese sistema privado una estafa piramidal"  
[X Link](https://x.com/JesusFerna7026/status/2022731451326697918)  2026-02-14T17:55Z 46.2K followers, [---] engagements


"@bcnopenmind @josasis Gracias Muy buena ilustracin. 😊"  
[X Link](https://x.com/JesusFerna7026/status/2022775461512712289)  2026-02-14T20:50Z 46.2K followers, [---] engagements


"Esto escrib sobre el nefasto Torres y el incluso peor Vicenc Navarro que hoy sabemos cmo termin. Por cierto un economista espaol superfamoso llam a FEDEA al da siguiente a protestar que hubiese escrito eso sobre Navarro que era un luchador antifranquista y que no se mereca ese tratamiento. Me sent como una patada en al espinilla. Yo era ms junior entonces y me tuve que aguantar. Pero hoy monto el pollo. https://nadaesgratis.es/fernandez-villaverde/agricultores-y-pensiones https://nadaesgratis.es/fernandez-villaverde/agricultores-y-pensiones"  
[X Link](https://x.com/JesusFerna7026/status/2022776057792004309)  2026-02-14T20:52Z 46.2K followers, [---] engagements


"S pero si le pilla a uno justo al jubilarse te destruye la senda de ingresos por diez aos y cuando la bolsa empieza a recuperarse ya puede ser demasiado tarde. Y no es el nico caso: ha habido tres dcadas ms en el ltimo siglo. No es algo raro. El punto es que todo sistema sensato de pensiones debe contar con un pilar de reparto y otro de capitalizacin. Mire: Es el blog de mi amigo Karsten el tipo ms listo de mi promocin. Este es un buen economista no un vendedor de humo. https://earlyretirementnow.com/ https://earlyretirementnow.com/"  
[X Link](https://x.com/JesusFerna7026/status/2022776841153466409)  2026-02-14T20:55Z 46.2K followers, [---] engagements


"@DavidGA_24 @GustavoBolsa @K1915580392 @piromorfit23379 Fue l quien seleccion una ventana de [--] aos como ventana en la que no se poda perder. No yo"  
[X Link](https://x.com/JesusFerna7026/status/2022777581133599128)  2026-02-14T20:58Z 46.2K followers, [---] engagements


"@Miguel_Figueres @GustavoBolsa Porque es un sistema de mutualizacin de riesgos. Es igual que uno no puede salir del sistema pblico de sanidad porque "a m no me va a dar cncer""  
[X Link](https://x.com/JesusFerna7026/status/2022777861149475170)  2026-02-14T20:59Z 46.2K followers, [---] engagements


"Es un sistema de mutualizacin de riesgos en el que quieres hacer pooling. De verdad no es tan difcil de entender (bueno en realidad s para algunos). Pero ya me he dado cuenta que hay mucho que cumple aquello de que quod natura non dat Salmantica non praestat. 🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰 https://twitter.com/i/web/status/2022778260141072730 https://twitter.com/i/web/status/2022778260141072730"  
[X Link](https://x.com/JesusFerna7026/status/2022778260141072730)  2026-02-14T21:01Z 46.2K followers, [---] engagements


"@iesustornero La Teora Monetaria Moderna es a la economa lo que la astrologa a la cosmologa: tiene sus fieles su jerga propia y un desprecio absoluto por la lgica y la evidencia emprica. No voy a perder ni un segundo de mi vida hablando de ella"  
[X Link](https://x.com/JesusFerna7026/status/2023075227950051573)  2026-02-15T16:41Z 46.2K followers, [--] engagements


"@noseque97973600 @iesustornero Cuando discuto en ms detalle es normalmente porque estoy escribiendo algo ms largo. De hecho se lo meto todo a Claude para que se acuerde de mis respuestas. Estos trolls son tan torpes que ni se dan cuenta de que estn funcionando para entrenar mi IA"  
[X Link](https://x.com/JesusFerna7026/status/2023076715728400560)  2026-02-15T16:47Z 46.2K followers, [--] engagements


"I have been working on how to explain the major changes in life cycles that increased life expectancy entails. A simple exercise I find useful is to list the top [--] economists of all time (my subjective list) and plot their ages at death; see the figure. The difference between David Ricardo (51 years old at death) and Ronald Coase (102) is striking. To put a number on this I regress age at death on year of birth. The R is surprisingly high (0.521) for such a crude regression. The slope implies approximately one additional year of life for every six years by which an economist is born later."  
[X Link](https://x.com/JesusFerna7026/status/2020536426320785721)  2026-02-08T16:33Z 46.5K followers, 57.5K engagements


"This is really cool Inspired by a convo w/ @BasilHalperin about @JesusFerna7026's great "Wealth of Working Nations" paper "I" (read: Claude) made a web-app for visualizing their proposed metric for comparing cross-country growth (GDP/15-64 pop) Here are figs for their sample (1991-2019) and 91-24 https://t.co/AyCeYN0XiW Inspired by a convo w/ @BasilHalperin about @JesusFerna7026's great "Wealth of Working Nations" paper "I" (read: Claude) made a web-app for visualizing their proposed metric for comparing cross-country growth (GDP/15-64 pop) Here are figs for their sample (1991-2019) and 91-24"  
[X Link](https://x.com/JesusFerna7026/status/2022391462818910656)  2026-02-13T19:24Z 46.5K followers, 11.7K engagements


"@MrtnzAlvrz La burguesia de Madrid no da para mas🤣"  
[X Link](https://x.com/JesusFerna7026/status/2023134279098945802)  2026-02-15T20:36Z 46.5K followers, [----] engagements


"Im sharing my slide deck on the demographic future of humanity 🔗 Slides: prepared for the keynote address I will give tomorrow to the 7th EBRD and CEPR Research Symposium on The Economics of Demographic Change: 🔗 Symposium: Here are a few key ideas Ill be discussing tomorrow some of which even economists tracking population trends may not fully appreciate: [--] Fertility is falling everywhere: rich and poor countries alike booming and stagnating economies secular and religious societies. The decline is happening far faster than anyone anticipated even me ten years ago [--] For example Colombias"  
[X Link](https://x.com/JesusFerna7026/status/1929278948350771281)  2025-06-01T20:48Z 46.5K followers, 1.2M engagements


"The narrative linking Japans stagnation since [----] to its financial crisis is largely a myth more recently discussed in this episode of @dwarkeshpodcast. Japans growth performance is almost entirely explained by poor demographics. See Table [--] of my paper with @King_ofSweden and Wen Yao The Wealth of Working Nations: If you look beyond GDP or GDP per capitaand instead use GDP per working-age adult (defined in several robust ways to consider for instance that Japanese retire later than in other G7 economies) or output per hour workedJapan has kept pace with its peer group. In fact from [----] to"  
[X Link](https://x.com/JesusFerna7026/status/1933252119924256961)  2025-06-12T19:56Z 46.5K followers, 175.4K engagements


"📉 Total Fertility Rate (TFR) in the Americas: A Quiet Revolution Here are the most recent TFR figures (2023 or 2024) for the [--] most populous countries in the Americas based on national statistical agencies: United States: [----] Brazil: [----] Mexico: [----] Colombia: [----] Argentina: [----] Canada: [----] Peru: [----] Venezuela: [----] (low-quality data) Chile: [----] Ecuador: [----] These [--] countries represent 88% of the population of the Americas. 🌎 Outside the top [--] by population some striking cases include: Costa Rica: [----] Uruguay: [----] Cuba: [----] Dominican Republic: [----] Nicaragua: [----] Paraguay:"  
[X Link](https://x.com/JesusFerna7026/status/1945805119561363929)  2025-07-17T11:17Z 46.5K followers, 525.4K engagements


"👋 New to this feed Heres an introductory post to help you navigate what I share. 🧵 If a post is in English it likely concerns economics. My main areas of interest (not necessarily those where I publish the most) include: [--] Demographics & Population Economics. Quick overview here [--] Computational Economics. Especially at the intersection of economics machine learning and high-performance computing. Nowadays 75% of my research uses machine learning. Examples here: and 💶 I also post (less frequently) on monetary policy and economic history. 🔓 I believe firmly in open sciencesharing slides"  
[X Link](https://x.com/JesusFerna7026/status/1946676441254645842)  2025-07-19T21:00Z 46.5K followers, 316.2K engagements


"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](https://x.com/JesusFerna7026/status/1983954520410349969)  2025-10-30T17:49Z 46.5K followers, 346.7K engagements


"Olivier Blanchard (@ojblanchard1) had a provocative post yesterday about a higher preference of French people for leisure: I have learned nearly an infinite amount of economics from Olivier since I was an undergrad and he came to Spain to present a report on our unemployment problem so I feel a bit intimidated about pushing back on this idea. I am perfectly happy with the idea that preferences are heterogeneous: some people like leisure more than others. And the goal of economic policy should never be to maximize output but to maximize welfare. If most people in France enjoy sitting in the"  
[X Link](https://x.com/JesusFerna7026/status/2016499997362081977)  2026-01-28T13:13Z 46.5K followers, 230.9K engagements


"Moshe Hazan(@MosheHazan6) who has done important work on the economics of fertility reminds me that he has documented the changing slope between fertility and education in advanced economies in several papers. One figure I found particularly clear to share on X is from his paper: Highly educated women are no longer childless: The role of marketization with David Weiss (a Penn alumnus) and Hosny Zoabi (@Zoabi_Hosny). The authors compare the rate of currently childless among women of 40-45 years of age (i.e. close to the end of their fertile age) with postgraduate degrees (masters doctorates"  
[X Link](https://x.com/JesusFerna7026/status/2019056036523495931)  2026-02-04T14:30Z 46.5K followers, 30.1K engagements


"@jjavier_rs El valor presente descontado de las pensiones es entre un 45%-60% MAYOR que el valor presente descontado del total de las cotizaciones pagadas por el trabajador Y el empresario"  
[X Link](https://x.com/JesusFerna7026/status/2022834402019905536)  2026-02-15T00:44Z 46.4K followers, [---] engagements


"@AragoneseLion Lo que ms me sorprendi al estudiar en EE. UU. UU. fue precisamente eso: los espaoles juntndose con otros espaoles. Oye que hay mucha gente en el mundo Yo era la persona rara que se iba de copas con los americanos"  
[X Link](https://x.com/JesusFerna7026/status/2023177611690791144)  2026-02-15T23:28Z 46.5K followers, [----] engagements


"@BadelTart Estoy 100% de acuerdo con usted. Yo no tengo solucin alguna que ofrecer. Lo siento mucho🙄"  
[X Link](https://x.com/JesusFerna7026/status/2023179537828446585)  2026-02-15T23:36Z 46.5K followers, [----] engagements


"@DanielArio10 @sra_fletcher9 Lo mismo. Pero en todo caso Armada fue un intil al organizar el golpe como lo organiz"  
[X Link](https://x.com/JesusFerna7026/status/2023182208480199050)  2026-02-15T23:46Z 46.5K followers, [---] engagements


"Muchos todava piensan que con el PP en el gobierno las cosas mejorarn. Pero al final de varios aos de gobierno del PP quedar claro que nada ha mejorado y entonces la gente votar por otras cosas lo que sea. Qu ese cambio lleva a algo bueno No lo s. Lo mismo quedamos peor"  
[X Link](https://x.com/JesusFerna7026/status/2023182770156245086)  2026-02-15T23:48Z 46.5K followers, [----] engagements


"@sonofavocado Eso esta muy bien escrito😊"  
[X Link](https://x.com/JesusFerna7026/status/2023195153985687723)  2026-02-16T00:38Z 46.4K followers, [----] engagements


"During the time I have participated in the policy debate (as my post yesterday on counterfactual Nobel prize winners confirmed) I have realized that one of the hardest things for many people to grasp is that there are four (person-dependent) groups of economists: [--] Group A: Great researcher and I agree with their policy recommendations. [--] Group B: Great researcher and I disagree with their policy recommendations. [--] Group C: Weak researcher but I agree with their policy recommendations. [--] Group D: Weak researcher and I disagree with their policy recommendations. (Yes the great/weak distinction"  
[X Link](https://x.com/JesusFerna7026/status/2021954241917530436)  2026-02-12T14:27Z 46.5K followers, 26.9K engagements


"El secretario de Estado tuvo que mediar en uno de esos problemas y se le caa la cara de vergenza de pensar que tuvo que participar en solventar el entuerto de corrupcin (y de apropiacin de fondos pblicos) que haba causado el susodicho. Se fue al exilio por motivos poderosos no por capricho de Rajoy. Es usted quien por algn motivo que desconozco defiende a alguien que ni su hijo quiere ver en Espaa y cuya mujer le abandon. https://twitter.com/i/web/status/2023200769743204670 https://twitter.com/i/web/status/2023200769743204670"  
[X Link](https://x.com/JesusFerna7026/status/2023200769743204670)  2026-02-16T01:00Z 46.5K followers, [---] engagements


"Me pones en un aprieto tremendo. Me da mucho apuro seleccionar uno u otro. Pero as rpido cinco libros: Spanish Economic Growth [--------] Leandro Prados de la Escosura. A Millennial View of Spains Development: Essays in Economic History Leandro Prados de la Escosura Espaa: 1808-2008: [--] edicin actualizada Raymond Carr Espaa 1808/1996 Juan Pablo Fusi y Jordi Palafox. Historia de Espaa en el siglo XX Julin Casanova y Carlos Gil Andrs. No estoy de acuerdo con todas las interpretaciones pero son los mejores creo yo. https://twitter.com/i/web/status/2023207988379472039"  
[X Link](https://x.com/JesusFerna7026/status/2023207988379472039)  2026-02-16T01:29Z 46.5K followers, [----] engagements


"Un anlisis rpido de los resultados en Aragn con el escrutinio provisional ya casi cerrado (987% cuando escribo estas lneas) y sin haber tenido tiempo de revisar los datos a nivel ms desagregado. [--] El gran perdedor de la noche es el PP que se ha dejado con respecto a [----] dos escaos (de [--] a 26) [---] puntos (de 3551% a 3427%) y votos (de [-------] a 224.486; algunos menos cuando el escrutinio finalize). Estas eran unas elecciones convocadas por el PP en el momento en que crey oportuno y con vientos de cola claros (los escndalos del PSOE los accidentes ferroviarios el roto a Aragn de la propuesta"  
[X Link](https://x.com/anyuser/status/2020617476304748822)  2026-02-08T21:55Z 46.2K followers, 305.1K engagements


"@anup_malani Couldn't agree more. If I had one dollar for every time I had tried to explain what Coase was trying to do I would finally have enough money for that house in Santa Barbara I want 😆"  
[X Link](https://x.com/JesusFerna7026/status/2022326214346625090)  2026-02-13T15:05Z 46.3K followers, [----] engagements


"Veo que hay muchos lectores muy torpes que aprobaron las matemticas de bachillerato de chiripa. As que un ejemplo sencillo con los parmetros de Japn: n = [----] (una cada de la poblacin de un 1% anual) g = [----] (un crecimiento de la productividad de un 2% anual) TIR sostenible = (0.99)(1.02) [--] = [----] O un 1% anual. Es decir que se puede tener un sistema de reparto pblico sostenible de manera indefinida con una poblacin en declive. De hecho es lo que ha hecho Japn con la reforma de su sistema de pensiones hace un par de dcas algo que poca gente conoce en Occidente. Pero si no les gustan estos"  
[X Link](https://x.com/JesusFerna7026/status/2022708812268892236)  2026-02-14T16:25Z 46.3K followers, 10.4K engagements


"Aqu tiene: si meti $1 en el S&P [---] en [----] en [----] tena [--] cntimos (en trminos reales). El americano que se jubil con [--] aos en [----] sufri un sequencing risk de primera magnitud. Es lo que tiene ser catedrtico de economa en una universidad de verdad: que sabemos los datos. 🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰🥰"  
[X Link](https://x.com/JesusFerna7026/status/2022763057064083739)  2026-02-14T20:01Z 46.2K followers, [----] engagements


"Gordsimo. Me preocupa adems que muchos hablan de inversin y finanzas y todo lo que dicen es infantil. No duraran ni cinco minutos en FNCE9110 - Financial Economics en Wharton y mucho menos en Wall Street. Pero me imagino que es el motivo por el que AQR hace dinero: con idiotas como estos como counterparty es fcil generar excess returns. https://twitter.com/i/web/status/2022800799500501330 https://twitter.com/i/web/status/2022800799500501330"  
[X Link](https://x.com/JesusFerna7026/status/2022800799500501330)  2026-02-14T22:31Z 46.2K followers, [----] engagements


"@zener_btc Un Ponzi estalla en tiempo finito porque te quedas sin nuevos entrantes en el sistema"  
[X Link](https://x.com/JesusFerna7026/status/2022835025108939248)  2026-02-15T00:47Z 46.3K followers, [---] engagements


"I just finished organizing the schedule for my Fall [----] course on Global Economic History. With only [--] lectures of [--] minutes (plus two midterms) one must make painful choices about what to leave out. Honestly this should be a two-semester course. On the bright side theres again a long waitlist of students (as the classroom is filled to capacity) so maybe someday Ill convince the powers that be to let me have two semesters. What didnt make the cut this year is Africa. A real pity. I find Africas economic history fascinating for many reasons and it is essential to any course labeled as"  
[X Link](https://x.com/JesusFerna7026/status/1960614778621063445)  2025-08-27T08:06Z 46.3K followers, 43.3K engagements


"This week and next I am covering the years [--------] in my undergraduate economic history course. Each time I return to this material I am struck by how much of the modern world takes shape in that era often more so than in the classic narratives centered on Britains Industrial Revolution or the political upheavals of [--------]. A time traveler from [----] landing in [----] would encounter a world that feels remote to us today from clothing styles to the absence of electricity and telephones in homes. By [----] the same traveler would find a world far more recognizable. Even modern mass politics (and"  
[X Link](https://x.com/JesusFerna7026/status/1970825823125934376)  2025-09-24T12:21Z 46.3K followers, 230.5K engagements


"Over the weekend I wrapped up a new version of my paper The Neoclassical Growth of China with Lee Ohanian and Wen Yao: The main change from previous versions is that we thoroughly redid the analysis using PWT [----]. This was important because it allowed us to extend the sample to [----]. The additional years are quite informative although to our pleasant surprise in full agreement with what the model in the previous version of the paper had predicted using data up to [----]. I include my favorite figure from the paper in this post which compares China with other East Asian economies at similar"  
[X Link](https://x.com/JesusFerna7026/status/2016154998334243082)  2026-01-27T14:23Z 46.3K followers, 79.2K engagements


"@JeanClaudeFox2 Funnily enough Parsons died in Germany while lecturing and he had studied in Heidelberg"  
[X Link](https://x.com/JesusFerna7026/status/2020136136039944383)  2026-02-07T14:02Z 46.3K followers, [---] engagements


"Contrariamente a lo que se afirma insensatamente con frecuencia un sistema pblico de pensiones contributivas de reparto no es una estafa piramidal. Todo sistema de reparto se caracteriza por una tasa interna de retorno (TIR) que es la tasa de descuento que iguala en valor presente las cotizaciones de los trabajadores con las prestaciones que reciben (todas las cifras de este post estn en trminos reales es decir ya descontada la inflacin). Esta TIR puede ser la media del sistema (para todos los trabajadores) o individual (en la que se emplea el valor actuarial esperado que considera las"  
[X Link](https://x.com/JesusFerna7026/status/2022678571852918896)  2026-02-14T14:25Z 46.3K followers, 97.7K engagements


"@polis_data @K1915580392 No. Pongamos el caso de Japn: n = [-----] g = [----] TIR sostenible = [----] De hecho es la reforma que Japn aprob hace [--] aos. La TIR de las pensiones en Japn ahora es sostenible a pesar de tener una poblacin en declive"  
[X Link](https://x.com/JesusFerna7026/status/2022705705636315571)  2026-02-14T16:13Z 46.3K followers, [---] engagements


"Dada los cambios factibles en la distribucin de renta entre bases de cotizacin y no bases de cotizacin (recordemos que parte de lo que normalmente se atribuye a las rentas de capital cotizan a la SS son los ingresos de los autnomos y buena parte de las rentas de capital son los alquileres autoimputados una creacin contable) los efectos en el nivel de pensiones de tales redistribuciones palidecen en valor presente descontado en comparacin con cualquier cambio en g. Como aproximacin de primer orden: cualquier esfuerzo de investigacin o de poltica econmica centrado en temas de redistribucin es"  
[X Link](https://x.com/JesusFerna7026/status/2023042216189415544)  2026-02-15T14:30Z 46.3K followers, [---] engagements


"Uno de los argumentos ms repetidos en el debate sobre pensiones en Espaa es que las administraciones pblicas recuperan buena parte del gasto en pensiones gracias a los impuestos (IRPF IVA impuestos especiales etc.) pagados por los pensionistas. Este argumento es errneo porque ignora el contrafactual: qu ocurrira con esa recaudacin si las pensiones fuesen menores. Imaginemos para simplificar un sistema de reparto en equilibrio: las cotizaciones sociales son iguales a las pensiones. Reduzcamos ahora las cotizaciones sociales a la mitad y para mantener el equilibrio las pensiones en igual"  
[X Link](https://x.com/JesusFerna7026/status/2023054931846963566)  2026-02-15T15:20Z 46.3K followers, 19.8K engagements


"Acabo de decirles que no a una consultora que quera que escribiera un informe sobre un tema macroeconmico y me ofreca una autntica fortuna por ello. En vez de meterle horas a hacer caja estoy aqu un domingo por la maana escribiendo en X para explicar que el sistema espaol machaca a los jvenes. Pero la honestidad intelectual me obliga a distinguir de manera drstica entre un argumento lgicamente consistente ("yo creo que los pensionistas necesitan ganar al menos [------] euros al ao") de los que no lo son ("las pensiones son un motor econmico"). Si un profesor universitario pierde su honestidad"  
[X Link](https://x.com/JesusFerna7026/status/2023068599116505159)  2026-02-15T16:15Z 46.3K followers, [---] engagements


"En primer lugar digo que se jubil en [----] no en [----] (lo de la capacidad lectora veo que es para nota). Por tanto naci en [----] con lo cual se tuvo que tragar la prdida de valor del S&P500 de [----] a [----] con patatas justo en el momento mejor de su vida profesional (de [--] a [--] aos). Y fue ese vendehumos el que me dijo que no habia eventos de [--] aos donde se perda: este jubilado se trago tres: de [----] a [----] (aunque por su edad no invirti) de [----] a [----] y de [----] a [----]. No est mal: uno cada [--] aos de vida (por cierto es lo que documenta la literatura emprica: Lejos de tener la piel fina no soy"  
[X Link](https://x.com/JesusFerna7026/status/2023086789443858467)  2026-02-15T17:27Z 46.3K followers, [---] engagements


"@gonzalosevilla2 @sra_fletcher9 Por muchos motivos que no tengo que compartir pblicamente pongo mi mano en el fuego por este secretario de Estado y por su testimonio. Respndame a una pregunta s o no Cobr Juan Carlos Borbn comisiones ilegales"  
[X Link](https://x.com/JesusFerna7026/status/2023208863806206363)  2026-02-16T01:32Z 46.3K followers, [--] engagements


"Eso podr ser cierto. De hecho escribo: "Existen argumentos legtimos y muy vlidos para defender el nivel actual de las pensiones en Espaa" El retorno social puede ser uno de ellos. Pero no es de lo que iba mi post. Mi post va de: "Pero que los pensionistas pagan impuestos o son motor econmico no son entre ellos." https://twitter.com/i/web/status/2023122817256997084 https://twitter.com/i/web/status/2023122817256997084"  
[X Link](https://x.com/JesusFerna7026/status/2023122817256997084)  2026-02-15T19:50Z 46.4K followers, [---] engagements


"Depende de su definicin de "decente". Por ejemplo alguien que sera un gestor capaz De izquiera a derecha: PSOE: Jordi Sevilla y Salvador Illa. Antiguo C's: Francisco de la Torre Luis Garicano y Tono Roldn aunque ahora estn medio retirados. PP: Alejandro Fernndez lvarez y Jos Luis Martnez-Almeida. Me salto a Vox ya que me pide que obvie a Quero y no quiero que me acuse de emplear a alguien como "proxy" de Quero. Si con "decente" se refiere a alguien con instinto poltico y que entiende por dnde va la sociedad Slvia Orriols de AC es la mejor poltica espaola ahora mismo. Isabel Ayuso es la"  
[X Link](https://x.com/JesusFerna7026/status/2023162738038772013)  2026-02-15T22:29Z 46.4K followers, [----] engagements


"@sra_fletcher9 Eso es un buen resumen de mi argumento: Francia produce De Gaulles Espaa Armadas"  
[X Link](https://x.com/JesusFerna7026/status/2023188779453075473)  2026-02-16T00:12Z 46.4K followers, [---] engagements


"Por ejemplo: el militar. Espaa tuvo problemas por [---] aos con los espadones. Ahora tenemos unas fuerzas armadas profesionales y que jams intervendrn en poltica. Tambin se solucion el tema de la Iglesia: ahora somos un pas laico y aunque existen algunos roces de vez en cuando el tema religioso no condiciona la poltica nacional como ocurra en el pasado. Y finalmente nos integramos en Europa rompiendo siglos de aislamiento. Hoy somos miembros de la OTAN y de la UE (a pesar de todo lo que hace Pedro Snchez). Muchos otros problemas (pensiones demografa fiscalidad productividad mercado de trabajo"  
[X Link](https://x.com/JesusFerna7026/status/2023199674413244815)  2026-02-16T00:56Z 46.4K followers, [----] engagements


"@lvaro_d Puff no s. Las cosas se podan haber fastidiado mucho en el Pas Vasco y Catalua. Aunque tengo que reconocer que lo mismo son mis sesgos personales contra todo lo que para m representaban los golpistas"  
[X Link](https://x.com/JesusFerna7026/status/2023236653846786542)  2026-02-16T03:23Z 46.4K followers, [----] engagements


"Mexicos Fertility Collapse 📉 In [----] Mexicos total fertility rate (TFR) was just [----]. Yeslower than the U.S. (1.62 CDC). Yet every time I mention it people react with disbelief. 🧾 Slide from Mexicos official stats agency the Instituto Nacional de Estadstica y Geografa @INEGI: 🔗 Lets put this in context: In 1970: TFR = [----] In 2014: TFR = [----] In 2024: Early microdata (Subsistema de Informacin sobre Nacimientos SINAC) points to another dropbut lets stay cautious with early-release numbers. 📊 Whats striking: Mexicos [----] births [----] levels. Yet the population today is [--] larger. ✅ Also:"  
[X Link](https://x.com/JesusFerna7026/status/1945104197021471117)  2025-07-15T12:52Z 46.5K followers, 165.4K 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. [--]. 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. [--]. Equilibrium implies optimality or social"  
[X Link](https://x.com/JesusFerna7026/status/1994464610922238065)  2025-11-28T17:53Z 46.5K followers, 629.2K engagements


"I have been posting repeatedly on X about the extraordinarily fast collapse of births across the planet: in rich and poor countries in fast-growing and slow-growing economies in religious and secular societies under right-wing and left-wing governments with high taxes and with low taxes. The pattern is universal. I knew this trend would continue. Still the figures released this morning left me genuinely speechless. Chinas government announced on Monday (see screenshot below) that births in [----] fell to [----] million a staggering [----] million fewer than in [----] and that the total fertility rate"  
[X Link](https://x.com/JesusFerna7026/status/2013262261771440490)  2026-01-19T14:48Z 46.5K followers, 1.8M engagements


"@Someone1599376 Do you find this projection for South Korea of WPP [----] plausible"  
[X Link](https://x.com/JesusFerna7026/status/2014749361922515111)  2026-01-23T17:17Z 46.5K followers, 549.7K engagements


"This figure comes from a recent paper by Cheng et al. that correlates several statistical measures of income social outcomes and related variables with total fertility rates (TFR). The figure shows the relationship between the estimated overall cumulative effects of the mean female expected years of schooling over [--] years on TFR across regions. Right off the bat lets recall that this is a relation not a causality statement. It does not say that education causes higher or lower TFR; it only states that education and TFR move together. For example the causality arrow could move in the opposite"  
[X Link](https://x.com/JesusFerna7026/status/2018342414390378518)  2026-02-02T15:15Z 46.5K followers, 42.3K engagements


"Yesterday I posted on the life expectancy of great economists: But this raises an obvious question: Is economics good for your health Yes (but in a subtle way). For my previous post I had compiled a (subjective) list of the top [--] economists of all time. So I fed it to ChatGPT and asked it to compile similar lists of [--] sociologists mathematicians physicists and chemists. I pick sociology as a comparison within the social sciences and math physics and chemistry as examples from the hard sciences. To keep the comparison fair I asked that all researchers be born after [----] the year Adam Smith"  
[X Link](https://x.com/JesusFerna7026/status/2020860159723970788)  2026-02-09T13:59Z 46.5K followers, 20.4K engagements


"The Sveriges Riksbank established the Prize in Economic Sciences in Memory of Alfred Nobel in [----] to celebrate its 300th anniversary. As a result many great economists had died before that date and the stock of potential laureates was so large that many fantastic economists never received it. On Tuesday I visited @MITEcon. Amid many pleasures including great conversations I had the chance to take a pic from a wall where the department has displayed photographs of its laureates over the years a most impressive collection of names. This morning on the plane back from Boston for pure amusement"  
[X Link](https://x.com/JesusFerna7026/status/2021723128989163559)  2026-02-11T23:08Z 46.5K followers, 19.4K engagements


"I learned from a great Spanish economist many years ago that so many hate economists because they play in policy discussions the same role as the kid who told you in second grade that Santa Claus does not exist (well since this was in Spain the Reyes Magos). You know it is true but you hate him even more precisely because you know he is right. People listen to Jon Stewart (populist left) or Oren Cass (populist right) because they want to escape reality. Stewart and Cass are the discontents of adulthood sellers of fantasies partly out of intellectual immaturity partly out of venal interests."  
[X Link](https://x.com/JesusFerna7026/status/2022312585060614388)  2026-02-13T14:11Z 46.5K followers, 88.5K engagements


"La triste realidad de Espaa es que la burguesa de Madrid no da para ms. No dio para mucho en [----] ni en [----] ni en [----] ni en [----] ni en [----]. En [----] por una serie de accidentes la tutela de Estados Unidos y Alemania y a mucha suerte esta burguesa tuvo la fuerza suficiente para permitir la formacin de un rgimen que solucion muchos problemas histricos. Pero no nos olvidemos de que si los tenientes generales del 23-F no hubieran sido tan incompetentes (o como en el caso del de Sevilla un borracho) el golpe habra triunfado independientemente de lo que Juan Carlos hubiese querido y nos habra"  
[X Link](https://x.com/JesusFerna7026/status/2023172391921135669)  2026-02-15T23:07Z 46.5K followers, 200.1K engagements


"Hombre que Armada y Milans no pudieran controlar a Tejero creo que es prueba de su incompetencia :) A fin de cuentas Tejero era un don nadie al que haban puesto a hacer el trabajo sucio. Pero si Pedro Merry Gordon saca a los tanques a la calle en Sevilla en vez de estar durmiendo la borrachera yo creo que el golpe hubiese triunfado"  
[X Link](https://x.com/JesusFerna7026/status/2023177205979767183)  2026-02-15T23:26Z 46.5K followers, [----] engagements


"Si la propensin marginal de los empresarios por ejemplo es menor eso significa que aumenta el ahorro y con este la inversin generando mas recaudacin en el largo plazo. Por eso insisto tanto en la diferencia entre el multiplicador de impacto y el multiplicador de largo plazo que tienen signos diferentes con estas propensiones marginales menores. Siempre me sorprende que esto que aprend en primero de la licenciatura no se aprecie ms"  
[X Link](https://x.com/JesusFerna7026/status/2023179227181228476)  2026-02-15T23:34Z 46.5K followers, [---] engagements


"Hombre si eso fuera as el tipo le dice a Milans que l no se suma porque quiere ser el jefe. Sinceramente es peor que emborracharse. Es bsicamente decir que Espaa le trae al fresco y que lo nico que le importa es mandar l. Pero bueno dejmoslo aqu. No quiero seguir hablando de este tema porque me pone de muy mal humor pensar en todos estos generales y en Juan Carlos Borbn. https://twitter.com/i/web/status/2023194615701008572 https://twitter.com/i/web/status/2023194615701008572"  
[X Link](https://x.com/JesusFerna7026/status/2023194615701008572)  2026-02-16T00:36Z 46.5K followers, [---] engagements


"@Trailerparkone @SocdemEnjoyer @MrtnzAlvrz Quizs. Mi visin es desde fuera"  
[X Link](https://x.com/JesusFerna7026/status/2023194841086316581)  2026-02-16T00:36Z 46.5K followers, [---] engagements


"@Hagen_Tomm @MrtnzAlvrz Yo para que quede claro aprob todas las contabilidades de la carrera en primera convocatoria😅 (y todas las dems asignaturas)"  
[X Link](https://x.com/JesusFerna7026/status/2023195956477637024)  2026-02-16T00:41Z 46.5K followers, [----] engagements


"Hombre parte de mi post busca efectivamente recordar que cuando Juan Carlos Borbn se ve forzado a abdicar por unos niveles de corrupcin que ni el gobierno del PP ya poda tapar (un secretario de Estado bastante conservador me cont cosas de ese seor para no dormir) el hecho de que todava haya gente que se refiera a l como "SM" me demuestra que los problemas de Espaa con la ms mnima honestidad son profundos. https://twitter.com/i/web/status/2023197239137427527 https://twitter.com/i/web/status/2023197239137427527"  
[X Link](https://x.com/JesusFerna7026/status/2023197239137427527)  2026-02-16T00:46Z 46.5K followers, [---] engagements


"@ContraInvest Hombre no s si estar de acuerdo o no con mi interpretacin pero s como escribir😇 Lo termin en cinco minutos"  
[X Link](https://x.com/JesusFerna7026/status/2023200084293534111)  2026-02-16T00:57Z 46.5K followers, [----] engagements


"El nacionalismo era mucho ms poderoso en Catalua en [----] que lo es hoy: De hecho desde la gran victoria nacionalista en Catalua de las elecciones generales de [----] el nacionalismo cataln nunca ha estado tan debil. Algunos prestamos atencin en la clase de historia de Espaa. https://es.wikipedia.org/wiki/Elecciones_generales_de_Espa%C3%B1a_de_1907 https://es.wikipedia.org/wiki/Elecciones_al_Parlamento_de_Catalu%C3%B1a_de_1932 https://es.wikipedia.org/wiki/Elecciones_generales_de_Espa%C3%B1a_de_1907 https://es.wikipedia.org/wiki/Elecciones_al_Parlamento_de_Catalu%C3%B1a_de_1932"  
[X Link](https://x.com/JesusFerna7026/status/2023201377061634167)  2026-02-16T01:02Z 46.5K followers, [---] engagements


"@091500_1 @CorazonRural @HdezEsteban @Egotada Efectivamente no s lo que es Mater Dolorosa. Siempre me sorprende en Espaa las hiptesis que hace la gente sobre los dems y lo que han (o no han) ledo. La diferencia claro es que yo pongo mi nombre no me escudo detrs del anonimato"  
[X Link](https://x.com/JesusFerna7026/status/2023380775358632237)  2026-02-16T12:55Z 46.5K followers, [--] engagements

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