All the material for my Bayesian Data Analysis course is available online, including the lectures, which we re-recorded this fall (some of them by @aloctavodia.bsky.social and Noa Kallioinen while I was on vacation). The video links are listed in the schedule at avehtari.github.io/BDA_course_A...

Huge thanks to @posit.co and hosts @mchow.com and @wesmckinney.com for having me on The Test Set!!! posit.co/thetestset/e... My favorite part was learning that I've been pronouncing "pandas" correctly all along. I've never felt more vindicated. And y'all are wrong about candy corn. 😜

My @upshot.nytimes.com column on the dynamics that led to the sudden fall of Bill Cosby seems very relevant to a certain Harvard economist right now www.nytimes.com/2014/11/21/u... The Harvard Crimson article has become a focal point www.thecrimson.com/article/2025...

"“The cozy friendship between Epstein and Summers on display in the emails is disgusting and disgraceful,” Statistics professor Joseph K. Blitzstein, who teaches Harvard’s largest introductory statistics course, wrote in a statement to The Crimson." Proud to have been JB's student.

Harvard professors responded with outrage to a tranche of emails showing a close yearslong correspondence between former Harvard President Lawrence H. Summers and sex offender Jeffrey E. Epstein. Shawn A. Boehmer and Veronica H. Paulus report. www.thecrimson.com/article/2025...

As always, nice reporting from the Crimson here While Summers has broken no laws, and he’s free to correspond with whom he chooses, there’s a lot here to support the idea that he should not be taken as an authoritative spokesman on so many important issues www.thecrimson.com/article/2025...

This is the stuff of authoritarian regimes. There isn't even the pretense that this is anything but persecution, unbound by law.

Giving my Stat 110 final today, on Taylor Swift’s birthday. Last year the final was also on Taylor Swift’s birthday! So I had a homework problem earlier in the semester on the probability of this kind of coincidence.

We collected lecture notes and blog posts by group members about recent topics in deep learning theory here. Hope it is useful! pehlevan.seas.harvard.edu/resources-0

Since I am suddenly inundated with statistics-oriented followers, I should post again that I am still conducting free weekly open office-hours for anyone in the world with Econometrics questions, Wed 10-12AM Eastern or by appointment. Details and sign up at donskerclass.github.io/OfficeHours....

I love the Feynman quote that starts the article "Differentiating Under The Integral Sign" by Keith Conrad kconrad.math.uconn.edu/blurbs/analy... It's also one of my favorite problem-solving methods. I thought it deserved a shorter name so I call it DUThIS (read as "do this")!

hey i know her

I made one for stats papers

Yesterday was not only my first day on Bluesky, but also my first time acting since elementary school. I was in a Harvard Pops Orchestra concert playing two roles: myself and the Unconscious Statistician (of LOTUS fame). The musical performances were amazing (thankfully they didn't ask me to sing).