Richard McElreath ๐Ÿˆโ€โฌ›'s Avatar

Richard McElreath ๐Ÿˆโ€โฌ›

@rmcelreath.bsky.social

Anthropologist - Bayesian modeling - science reform - cat and cooking content too - Director @ MPI for evolutionary anthropology https://www.eva.mpg.de/ecology/staff/richard-mcelreath/

16,908 Followers  |  1,331 Following  |  1,101 Posts  |  Joined: 30.07.2023  |  2.1445

Latest posts by rmcelreath.bsky.social on Bluesky

omg squee kitty and hog friends

21.11.2025 11:55 โ€” ๐Ÿ‘ 31    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

My guess is a computer scientist isn't the ideal person for such a position - if you did a phd in a data-intensive field and don't mind working in Python, you prob have at least as good RDM experience than many computer scientists!

21.11.2025 11:45 โ€” ๐Ÿ‘ 9    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

Looks like a great job in a great place, and the honesty in the job description is a nice touch. I mean, is it interdisciplinary scientific data? Then yeah it's going to be parts messy, unstructured and incomplete. Research Data Management is won in the trenches.

21.11.2025 11:43 โ€” ๐Ÿ‘ 21    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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yis

20.11.2025 17:16 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Slavoj ลฝiลพek meme image

Slavoj ลฝiลพek meme image

โ€œYou see, the endless renovation of the Stuttgart train station is a symbol of our late-capitalist condition: the project is always โ€˜in progress,โ€™ yet nothing ever progresses. The construction site itself becomes the true destination.โ€

19.11.2025 13:17 โ€” ๐Ÿ‘ 50    ๐Ÿ” 6    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 1
Preview
Erรถffnung des Bahnprojekts "Stuttgart 21" erneut verschoben Die Fertigstellung des Bauprojekts "Stuttgart 21" verzรถgert sich weiter. Die fรผr Dezember des kommenden Jahres geplante Erรถffnung ist dadurch nach SWR-Informationen geplatzt. Schuld sind offenbar tech...

In a world of rapid and bewildering change, it is comforting to know that the Stuttgart train station will always be under construction www.tagesschau.de/wirtschaft/s...

19.11.2025 13:09 โ€” ๐Ÿ‘ 41    ๐Ÿ” 4    ๐Ÿ’ฌ 6    ๐Ÿ“Œ 1

Oh nice replication dataset for future mixed model homework problems in my stats course. (Treatment effect is like 3 seconds difference with tons of variation by participant, age, etc.)

19.11.2025 12:02 โ€” ๐Ÿ‘ 21    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Haapaniemi et al. (2018) provide one famous example how targeted gene edits can produce spurious results.
They detail how CRISPR editing can automatically activate p53, a tumor suppressor. Because many edited
cells die as a result, experimentalists can inadvertently select for cells with defective p53 responses, forming a
confounder for research on cancer genetics.

Haapaniemi et al. (2018) provide one famous example how targeted gene edits can produce spurious results. They detail how CRISPR editing can automatically activate p53, a tumor suppressor. Because many edited cells die as a result, experimentalists can inadvertently select for cells with defective p53 responses, forming a confounder for research on cancer genetics.

If you talk about philosophy of science in interpretability papers you get to learn some incredible facts about what can go wrong with simple causal ablation studies

18.11.2025 23:54 โ€” ๐Ÿ‘ 41    ๐Ÿ” 8    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

Yes - on track for next year

18.11.2025 18:14 โ€” ๐Ÿ‘ 20    ๐Ÿ” 2    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 3
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I had to check what I recommend in my book. And Poison priors (right) are also cursed. I'm working on something new with Gelman and Vehtari, so will make a note to review our examples for some consistency in these contexts.

18.11.2025 15:07 โ€” ๐Ÿ‘ 20    ๐Ÿ” 2    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 1
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This from @davidbatherwoods.bsky.social's biography of Schopenhauer is sending me

17.11.2025 21:15 โ€” ๐Ÿ‘ 86    ๐Ÿ” 18    ๐Ÿ’ฌ 15    ๐Ÿ“Œ 2

An epilogue.

18.11.2025 12:26 โ€” ๐Ÿ‘ 5    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
A clutch of great tit eggs, with seven arranged in a circle around the eighth and with their pointed end facing inwards.

A clutch of great tit eggs, with seven arranged in a circle around the eighth and with their pointed end facing inwards.

It takes an exceptionally gifted bird to maintain such a pleasing clutch arrangement.
"Nesthetics" would be a great topic for a coffee table book.

18.11.2025 12:17 โ€” ๐Ÿ‘ 21    ๐Ÿ” 3    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
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she's doing her best

18.11.2025 12:24 โ€” ๐Ÿ‘ 24    ๐Ÿ” 3    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1
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meanwhile pigeons be like

18.11.2025 12:23 โ€” ๐Ÿ‘ 11    ๐Ÿ” 2    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

Thanks all for the comments. It would be good for beginner section to end with random and fixed effects models, and for advanced to start at same place. But not sure the scheduling could work for that. I will try to build out a calendar and see what can be done.

18.11.2025 09:04 โ€” ๐Ÿ‘ 11    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
unusual Italian food: aubergine slices wrapped around spaghetti, resting on a bed of tomato sauce

unusual Italian food: aubergine slices wrapped around spaghetti, resting on a bed of tomato sauce

A colleague went on vacation in Italy and saw the below at a buffet. I have two questions:
1. What is this called?
2. Does it violate Italian culinary law?

18.11.2025 08:59 โ€” ๐Ÿ‘ 15    ๐Ÿ” 0    ๐Ÿ’ฌ 8    ๐Ÿ“Œ 2

I did: Agresti & Coull. Waldโ€™s complete class theorem is prob most famous eg. Also all the โ€œempirical bayesโ€ and related. Irony is bayesians used to be obsessed with uninformative priors, but informative priors ended up being more useful.

18.11.2025 08:04 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Approximate Is Better than "Exact" for Interval Estimation of Binomial Proportions on JSTOR Alan Agresti, Brent A. Coull, Approximate Is Better than "Exact" for Interval Estimation of Binomial Proportions, The American Statistician, Vol. 52, No. 2 (May, 1998), pp. 119-126

During the 20th century, frequentists proved on their own terms that Bayes estimators have good properties. The Bayes-Freq wars are over. Everyone lost. Agesti and Coull paper for the curious: doi.org/10.2307/2685...

17.11.2025 18:34 โ€” ๐Ÿ‘ 19    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

Why are there so many ways to compute a frequentist interval for a proportion? Because the sample space is discrete, coverage can be garbage without adjustment. The Agresti-Coull interval ("score" below) is really a Bayes interval with a weak prior, has good freq coverage! >

17.11.2025 18:34 โ€” ๐Ÿ‘ 36    ๐Ÿ” 8    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

they warned us

17.11.2025 12:37 โ€” ๐Ÿ‘ 36    ๐Ÿ” 4    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Not sure. Will try as always. Previous lectures still online though: github.com/rmcelreath/s...

17.11.2025 06:55 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

The students are more diverse now. When I taught at UC Davis, they were mostly population biology and ecology phd students. Not sure that's the reason though. Basic coding skills are in general much better now, so not all bad.

17.11.2025 06:52 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Worry: Advanced section may will need some refresher of beginner content. So will need a new lecture for that.

17.11.2025 06:41 โ€” ๐Ÿ‘ 12    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

This would be more work for me, but possibly a lot better for learning goals.

17.11.2025 06:39 โ€” ๐Ÿ‘ 12    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Contemplating format for my Statistical Rethinking course in January. In recent years, felt too many students can't keep up, fall behind in 2nd half. Maybe I should offer two sections: beginner, advanced. Beginner is first half of content, at half speed. Advanced is 2nd half, also half speed. ?

17.11.2025 06:39 โ€” ๐Ÿ‘ 72    ๐Ÿ” 2    ๐Ÿ’ฌ 16    ๐Ÿ“Œ 0
Gandalf "Fly you fools" meme still

Gandalf "Fly you fools" meme still

17.11.2025 06:33 โ€” ๐Ÿ‘ 9    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

โ€œDo you know how to read?โ€
โ€œNo. It is one of the black arts.โ€
He nodded. โ€œBut a useful one,โ€ he said.

15.11.2025 12:20 โ€” ๐Ÿ‘ 54    ๐Ÿ” 16    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

when itโ€™s near done i will add some cream

13.11.2025 17:12 โ€” ๐Ÿ‘ 11    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
saag simmering

saag simmering

cooking down

13.11.2025 17:12 โ€” ๐Ÿ‘ 11    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

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