Jiajun Han

Oh so it does have phd level intelligence

Bon voyage🏝️🏖️～

An economist’s guide to big life decisions Forget your trip to the dentist. A new check-up is required

For my first column back after paternity leave I asked what if we took Keynes literally and economists were actually like dentists: How might the annual checkup go? www.economist.com/finance-and-...

Classic prisoner's dilemma.

kennedy is going to kill a lot of people

Quick @Stata tip: use the "coeflegend" option in a regression to display the name Stata uses for each coefficient.

reg price mpg i.foreign##i.rep78, coeflegend

"Take a moment to think about this. Each of us possesses a tangible, living soul. The System has no such thing. We must not allow The System to exploit us. We must not allow The System to take on a life of its own. The System did not make us: We made The System."

August 1, 2025 AMERICAN ECONOMIC ASSOCIATION Committee on Economic Statistics and Committee on Government Relations Statement from the American Economic Association on the Dismissal of the BLS Commissioner Leaders of the American Economic Association express their grave concern over the dismissal of the Commissioner of the Bureau of Labor Statistics (BLS) earlier today. The independence of the federal statistical agencies is essential to the proper functioning of a modern economy. Accurate, timely, and impartial statistics are the foundation upon which households, businesses, and policymakers make critical decisions. Undermining the independence or credibility of these agencies threatens the integrity of the information that markets, institutions, and the public rely on every day. Measuring the vast and dynamic U.S. economy in real time is inherently challenging. It is standard practice for statistical estimates to be revised as more complete and higher-quality data become available. These revisions reflect the commitment of statistical agencies to accuracy, transparency, and methodological rigor-not failure or bias. The BLS has long had a well-deserved reputation for professional excellence and nonpartisan integrity. Safeguarding this tradition is vital for the continued health of the U.S. economy and public trust in our institutions. We call upon elected officials to respect and preserve the independence of the nation's statistical infrastructure. Lawrence Katz President, American Economic Association Katharine Abraham President-Elect, American Economic Association Karen Dynan Chair, American Economic Association Committee on Economic Statistics Kenneth Troske Chair, American Economic Association Committee on Government Relations

Statement from the largest economics association about the BLS firing

As context: AEA approximately never makes such public statements

This is a big deal

Samantha Jones is my favourite character in Sex and the City. Albeit Samantha's absence, I'm still glad that Carrie finally ditched Aiden and has had sex with the handsome British writer Duncan. I may just dislike Aiden. 😂

Samantha Jones is my favourite character in Sex and the City. Albeit Samantha's absence, I'm still glad that Carrie finally ditched Aiden and has had sex with the handsome British writer Duncan. I may just dislike Aiden. 😂

A Jail Reform Success Story (SSIR) Sheriffs in Genesee County, Michigan, created an education and job-training program for inmates that reduced recidivism by transforming jail culture.

ssir.org/articles/ent...

Nonzero: The Logic of Human Destiny - Wikipedia

Yah, his worldview is deeply zero-sum and actual progress is non-zero-sum. If you haven’t read it, highly recommend book Nonzero by Robert Wright en.m.wikipedia.org/wiki/Nonzero...

Thanks a lot for your recommendation 🌺🌹🌷ʕ ᵔᴥᵔ ʔ💐

After all, trade is not a zero-sum game imagined by trump.

Thanks to Trump’s tariffs, American companies now have comparative *disadvantage*

This is what makes the Trump administration’s actions so illiberal.

The government has no right to demand that private institutions become less liberal, much less to threaten to destroy them otherwise.

A scholar with rare erudition and originality. Such an honour to attend Professor Hull's session. ʕ ᵔᴥᵔ ʔ

Immensely grateful for your great session🌹🌷💐Thanks soooo much for your enlightenment. So glad to have a chance to be taught by you🥺 And love your white shirt, impeccable taste as always ٩(๑❛︶❛๑)۶

www.economist.com/britain/2025...

A little poetic justice for Donald Trump The Epstein uproar has revealed an unexpected danger—for the president—of a Justice Department that seems partisan

This week's Lexington column is so incisive. Trump's flagrant erosion of post-Watergate power separation could backfire.
www.economist.com/united-state...

Because NYT knows that Obama has the integrity and decency that Trump never nears, unwilling and unable to. Standing up to a decent politician while yielding to a populist demagogue, quite the coherence.

A modest proposal: “Quadratic ticketing.” Fines increase with the square of prior offenses—eg, 1st: $25, 2nd: $100, 3rd: $225, 4th: $400—creating strong incentives to avoid repeat violations. Penalizes chronic offenders who are typically the most dangerous while avoiding harsh fines for majority.

Democrats are behind Republicans on every major issue but healthcare, even as the GOP presides over the incompetent dismantling of the country and the GOP president is plumbing sub-40 approval ratings 2/2

A striking finding from ICE arrest data -- the protests in LA were precipitated by a big increase in ICE arrests that increasingly impacted people without criminal histories.

ICYMI: you can watch the recording here (around the 5h19m mark)

www.youtube.com/watch?v=Rpxf...

The peril of trying to please people Compromise rarely leads to contentment. But it nearly always leads to costs

Compromise rarely leads to contentment. But it nearly always leads to costs

Who is Arrested by ICE under Trump 2.0? A 🧵

New from me & @elizabethacox.bsky.social!

Piece: immresearch.org/publications...

1. ICE arrests spike in Jan & May 2025; when arrests increase, percent of those arrested who are convicted of a crime falls

Majority arrested have no criminal conviction

Word.

Thought this was a particularly great honors exam question:

5 (V, Five!) CATE estimation+policy learning papers in a single volume. Could probably teach a good class with this issue alone.