A new antitrust case against Vail and Alterra takes aim at Epic and Ikon pass pricing. Core issue: bundling + ecosystem power Cheap season passes, but very high day tickets → steering demand, locking in consumers, and squeezing independents dicellolevitt.com/dicello-levi...

Excited to announce that our paper "Bayesian Persuasion with Lie Detection" is forthcoming in the Journal of Law & Economics ... ... with special thanks to the man who provided countless perfect examples for our analysis florianederer.github.io/lies.pdf

This joke has so many fantastic layers.

George Serafeim didn't disclose that he was collaborating with green investors while publishing (now discredited) research on the returns to such investments. HBS did nothing and even promoted his research. At the same time Ben Edelman disclosed his COIs and HBS still fired him.

The WSJ finally officially reports what we've known since early December. NBER cuts ties with Larry Summers.

To give you a sense of how big a deal this is: Summers’ PhD advisor made NBER what it is today

LOL at "courtesy of Niall Ferguson"

Remember Ran Duan, the restaurant owner overcharging customers? Turns out he's a media-savvy celebrity with luxury watches, a jet-set insta, diamond-draped models, shady business practices, drugs, a young woman's fatal overdose in his home, and a stunning failure to act.

“Free of formal responsibility, as President Emeritus and a retired professor, I [Larry Summer] look forward in time to engaging in research, analysis, and commentary on a range of global economic issues.” Is he going to make a POASTING comeback?

Just when things were about to get interesting again ...

Summer has the decathlon. Winter deserves one too. ❄️🏅 1 athlete, 10 events Giant Slalom Cross-country sprint Biathlon 10km Speed skating 500m Figure skating Ski jumping Snowboard cross Slopestyle skiing Luge Cross-country 50km Find the true winter 🐐.

Large-scale online deanonymization with LLMs shows how easily pseudonymous users can now be re-identified from unstructured text alone. When discussing our EJMR paper at NBER SI 2023 Catherine Tucker argued that rising compute would soon erode online anonymity. The future may already be here.

One of my favorite things in the Olympics is looking at the slowest racers in the alpine technical events (Giant Slalom & Slalom) and then wondering whether I could beat them. I am very confident I could beat the Indian guy in the slalom. Not 100% sure about the Eritrean in the Giant Slalom.

Filipe is definitely signed up for the Brazilian Championships (Giant Slalom) this weekend.

As cities became more economically important, medieval rulers shifted administrative control from landed to urban elites, but then created central assemblies or parliaments to ensure coordination and information flows. mitsloan.mit.edu/shared/ods/d...

Hey @florianederer.bsky.social, you were absolutely right: Brazilians are now officially into alpine skiing. We like two sports — soccer and Brazilian champions — so as long as our boy Lucas is around, there will be an extra 200+ million alpine skiing diehards. :)

T-2 hours for @filipecampante.bsky.social to start hyping the real Olympics

Re: Slater’s departure from ATR. Look at this Ticketmaster stock chart

My co-author Charles Hodgson (Yale) is hiring a full-time pre-doc to work on projects focusing on the role of information externalities. The hired researcher will meet regularly with faculty and receive dedicated research training & career development skills. Application👇

If you give zero importance to the very awesome en.wikipedia.org/wiki/Lucas_P... that's on you Filipe :) I am so here for a piece coauthored by you and @florianederer.bsky.social deriving a globally fair definition of different sports' objective quality and meritocracy, statically and dynamically

Here’s Duke behavioral economist Dan Ariely asking Jeffrey Epstein for “the name and email of the redhead that was here with you.” This is four years after Epstein’s 2008 conviction for procuring a child for prostitution.

you can follow @florianederer.bsky.social 's lead of using "The Wire" for his slides x.com/florianedere... or go one step further and make an entire Economics and Cinema course like i did ; )

2021: Meta acquires Within and its wildly successful VR app Supernatural for $400 million. 2022: FTC seeks to block Meta/Within acquisition. 2026: Meta lays off employees and announces that there will be no more content for Supernatural.

Very sad to hear of the passing of John Kagel. He was a foundational figure in behavioral and experimental economics and his research reshaped how economists think about strategic interaction and social preferences. His teaching and mentorship influenced generations of students.

1) Gino committed repeated research fraud (138 papers!). 2) Several influential and wealthy people (Lessig, Ackman, P&Q) continue to support her. 3) Harvard changed its review procedures. 4) Gino will likely get a settlement because of 3) ... which has nothing to do with 1).

A quarter million views and 1,300+ likes! Surely everybody wants to see this amazing paper (and my discussion 😂) tomorrow. Philadelphia Marriott Room 309 Sunday, January 4, 2:30pm

Skiing, an activity that Paul calls outdated, fixes this.

Over on Twitter/X, Bill Ackman (of Harvard/Claudine Gay/plagiarism/tennis debacle fame) has written another 3,000+ word post. He believes that Francesca Gino's RAs faked her data. And, plot twist, he's been funding Gino's legal battle against Harvard since 2024. x.com/i/status/200...

Devastating news. Kate was a great economist and a generous person.

A loss to us all and to the progress of Economics.

The brilliant Kate Ho has passed away. She was an amazing economist and a genuinely kind human being. Her work shaped how we think about healthcare markets and her generosity touched everyone lucky enough to know her. The profession and the world are poorer without her.

Goal for the next six months: dive into the debate on identification of demand elasticities in finance. Feels like asset pricing is rehashing debates from IO twenty years ago? But that’s good because it’s an important debate! @steveberry.bsky.social

In Sweden, corporate acquisitions lead to persistent earnings losses for workers. Wages fall, some workers are displaced, and the gains largely go to acquiring CEOs and shareholders. Employment and revenue stay flat. Profit rises because value is extracted from workers.

Freshwater-Saltwater's unexpected reunification

Lichtjahre vor weiten Teilen der medialen Berichterstattung: die Fankurve des SK Sturm. Danke dafür. Anlassfall ist der Femizid an einer Grazerin. (Foto: Sturmtifo.com)

Amazing things happening on X

Wow. The AEA has issued a life time ban against Larry Summers. www.aeaweb.org/news/aea-sta...

Not deadwood ... yet

Just a few years ago the economics profession completely marginalized @claudia-sahm.bsky.social for speaking out on this matter.

Summers conferred with Epstein frequently about how to extract sexual favors from a Harvard econ grad (AB '04, PhD '09) The grad is from China Epstein and Summers referred to her by the codename "Peril" Racism and sexual exploitation in one efficient package bit.ly/3LHpin8

IO is so cooked.

I updated the Larry Summers dual-axis inflation graph.

jmp pitch for the brave: how well does presence of faculty in this dataset predict university *jmr IP shares

As close to perfect as a videogame can get.

@stevesalop.bsky.social has an excellent write-up in @ProMarket_org about why the proposed merger between Novo Nordisk and Metsera was anticompetitive. www.promarket.org/2025/11/11/n...

Never thought of using classes. As Director of Undergraduate Studies, I had a lonely-hearts advice practice for young men (True rumor circulated that I had married before graduation.) Most common and most obvious advice: "Have you considered asking her out?"

Coupling this, fertility that. Why don't you academics actually do something about it?!? 😂

Beautiful article on Ali Riley who has retired after an amazing career in soccer. (If her last name sounds familiar to you as an economist, then that's no surprise. She's the daughter of UCLA auction theorist John Riley.) www.nytimes.com/athletic/678...

this is cool. emily wilson's (controversial!!) 'complicated' is her shot at 'πολύτροπος,' which is like literally 'many-turning' and therefore almost completely untranslatable as a personal descriptor