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Jon Hartley Profile picture
@Jon_Hartley_
Jan 19, 2020 • 3 tweets • 3 min read • Read on X
Hi @MayorDanGelber, can we retire these #USA flags at 41st Street and Alton Road and replace them with new ones? Their ends are torn and they have done their service. Happy to help donate new ones cc: @MiamiBeachNews @MiamiHerald #USA #America #KeepAmericaGreat #SuperBowlLIV
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Thank you @MayorDanGelber for fixing the American flags! The new flags on 41st Street look fantastic! @MiamiBeachNews

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More from @Jon_Hartley_

Jon Hartley Profile picture
Jul 24
1: Thread on nuclear policy, regulations and some of the potential scarring effects (& non-effects) of nuclear disasters. Summary: scarring effects of nuclear disasters which lasted decades are starting to wane as the world looks to nuclear energy as a source of clean energy Image
2: Some history: Ralph Nader's Critical Mass Energy Project formed in 1974 became the largest U.S. anti-nuclear group created false claims, convincing many Americans that nuclear energy from nuclear power plants had extreme far reaching negative health and environmental effects. Image
3: Of of the three major nuclear disasters (Three Mile Island, Chernobyl, and Fukushima), only Chernobyl had some direct casualties. Yet, the aggregate number of nuclear plants was halted after Chernobyl according to IAEA PRIS data. Image
Read 17 tweets
Jon Hartley Profile picture
May 29
A short summary of today's @JMilei speech at @Stanford @HooverInst; very technical economics heavy speech covering econ history, growth, general vs. partial equilibrium; dangers of models. Overall, critical of how economics has used market failure to justify state intervention. Image
2: Began with a discussion of intervention of the state and socialism. Much discussion of Hayek, Friedman and general equilibrium. Principle of noninterference good. Argues state intervention during COVID-19 pandemic caused 100k additional deaths in Argentina
3: Discussion of economic models and why we need models because the world is complex but that when they stray from reality they can become used to strengthen the state and socialism
Read 13 tweets
Jon Hartley Profile picture
Mar 22
My paper with @Felix_Gerding "De-Dollarization? Not So Fast" is now published in Economics Letters. We find that U.S. dollar dominance has been totally unchanged across many metrics since COVID & the 2022 Russian invasion of Ukraine/related sanctions🧵 sciencedirect.com/science/articl…
The US dollar share of central bank FX reserves has remained largely unchanged since early 2022. Image
Looking back further in time (the wonderful @B_Eichengreen data), the US dollar share of global central bank FX reserves was lower during the 1990s (at 50%) while it is roughly at 60% now. Dollar dominance in FX reserves remains strong. Image
Read 8 tweets
Jon Hartley Profile picture
Mar 16
Yesterday marked 10 years since the release of Piketty's "Capital In The 21st Century". Hard to think of an economics book in the past 10 years which, for better or worse, has had as much influence on discussion about economics, policy and politics. A Thread🧵Image
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Measuring Top 1% income shares is difficult. Auten-Splitner using unreported earnings find after-tax top 1% income shares have been essentially flat since the 1960s unlike the Piketty-Saez-Zucman who find shows substantial increases. Capital21 didn't show after-tax Top 1% shares Image
Whether r>g can drive sustained wealth inequality has also generated much debate. Inelasticity of substitution between K and L<1. Dynastic wealth breaks down over time. Assortative mating works against. Rates of return going up. Lot happening. academic.oup.com/qje/article/13…
Read 12 tweets
Jon Hartley Profile picture
Mar 13
In latest @CapAndFreedom ep, Steve Levitt talks his career & retiring as @UChicago prof while still leading RISC & Freakonomics. We talk applied economics, Chicago econ dept (price theory failure, macro success, personalities), Freakonomics origin & more podcasts.apple.com/us/podcast/ste…
Podcast episode full transcript: capitalismandfreedom.substack.com/p/episode-28-s…
On why he is retiring from academia: "It just didn't make sense to me to keep on puttering around, doing all this work, spending years to write papers that no one cared about when I had other ways of getting my ideas out. And really my interests were elsewhere. I didn't get any thrill. It'd be one thing. If I got a thrill from publishing, if I loved the act of publishing, and it made me feel great to see my nature in some journal, then it would be different. But I never cared about that. I just liked answering the problems and I realized there were better ways, there were better venues for me to answer your problem. And so really the question is, why am I retiring now? The question I should ask myself is why didn't I retire a long time ago? It made no sense. I've just been, I've thought, I've known for years, it's the wrong place for me to be. And it just took me a long time to figure out how to extricate myself from academics. And I'm so glad I'm doing it. It's good for everyone. It doesn't make any sense to, it feels to me awful to be in a place where I'm not excited and where I'm not contributing materially. So, for me, it feels like a breath of fresh air to be saying, "Hey, I'm not going to be an academic anymore. I'm going to be doing what I really love to do.""
Read 17 tweets
Jon Hartley Profile picture
Jan 28
NFL 4th down attempts have skyrocketed since the 2018 NFL season. Amazing how such a simple insight that increases win probability, encapsulated in David Romer's 2006 Journal of Political Economy (@JPolEcon) article, took over 10 years to get coaches/GMs/owners on board. (1/4) Image
"Do Firms Maximize? Evidence from Professional Football" (2006 JPE) by David Romer (2/4) journals.uchicago.edu/doi/full/10.10…
The 2018 surge in 4th down attempts was in part kicked off by the Cleveland Browns and their analytics push; my February 2019 @WSJ article documents the beginning of this trend: "Behavioral Economics May Make Champs of the Cleveland Browns" (3/4)wsj.com/articles/behav…
Read 4 tweets

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