John Mullahy
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johnmullahy.bsky.social
John Mullahy
@johnmullahy.bsky.social

UW-Madison, Univ. of Galway, NBER

C.V.: https://uwmadison.box.com/s/kkaquhtv5b2og4yo6md5p34f7q7gx1ju

Banner image: Free Clinic (detail), Jacob Lawrence, 1937

Economics 46%
Mathematics 17%
Major news outlets: Please consider prominently reporting what this all-star team of researchers has found.
www.nber.org/papers/w34791

An' forward, tho' I canna see,
I guess an' fear!

Robert Burns's To a Mouse ("best laid schemes") offers a timely reflection on being forcibly dispossessed of one's home in the cold of winter.

Reposted by John Mullahy

#OTD 1845 Francis Ysidro Edgeworth b (d 13 Feb 1926) President RSS 1912-14. His work anticipated many key ideas in modern mathematical statistics such as ANOVA, least squares detrending & significance testing. Sadly, his obscure writing style limited the accessibility and impact of his work 1/3

camel, eye of needle, etc. etc.
“It’s blindingly obvious that the Trump administration has no interest in our learning more about Epstein. It’s also blindingly obvious the web of corruption and complicity around Epstein was large and intricate, and that there is much more we deserve to know.”

www.thebulwark.com/p/trump-at-t...
Trump at the Pearly Gates
Why the president thinks he’s going to Heaven.
www.thebulwark.com

Reposted by John Mullahy

“It’s blindingly obvious that the Trump administration has no interest in our learning more about Epstein. It’s also blindingly obvious the web of corruption and complicity around Epstein was large and intricate, and that there is much more we deserve to know.”

www.thebulwark.com/p/trump-at-t...
Trump at the Pearly Gates
Why the president thinks he’s going to Heaven.
www.thebulwark.com

"The words 'Processed food kills' and 'Eat real food' flash as Mr. Tyson and his son bite into apples."

Tyson: "I recommend human ear as part of a balanced, protein-rich diet."

When Mike Tyson and RFK Jr. are your country's leading voices on health what could possibly go wrong?

www.nytimes.com/2026/02/06/w...
A Super Bowl Message From MAHA and Mike Tyson: ‘Processed Food Kills’
www.nytimes.com

"OFF THE MARKET"

Malone: “I’m not deaf to the calls that we need to get the Covid vaccine mRNA products off the market. All I can say is, stay tuned and wait for the upcoming A.C.I.P. meeting. If the F.D.A. won’t act, there are other entities that will.”

Living every day steeped in so much paranoia and ignorance cannot be easy.

www.nytimes.com/2026/02/06/h...
Federal Vaccine Advisers Take Aim at Covid Shots
www.nytimes.com
George Stigler and Gary Becker, AER (1977): "De Gustibus Non Est Disputandum"
www.jstor.org/stable/1807222

Adajar, Berndt, and Conti discuss commonalities of Simpson's diversity index with measures of concentration (e.g. HHI) familiar to economists.
www.nber.org/papers/w26512

Simpson published this letter in Nature in 1949.

Reposted by John Mullahy

#OTD 2019 Edward Simpson d (b 10 Dec 1922) The Simpson of Simpson's paradox (& featured in an episode of The Simpsons). A Bletchley Park code breaker with Alan Turing 1942-5, in 2017, aged 95, he contributed 2 book chapters to The Bletchley Park Codebreakers on the crypt-analytic process Banburismus

Icarus's contrail

"Facts alone are wanted in life.... Stick to Facts, sir!"
—Dickens, Hard Times

Reposted by John Mullahy

Alan Reynolds on one of the most made-up of all the Trump made-up numbers on tariffs.
Trump’s Eighteen Trillion Dollar Hoax
Yet this totally imaginary $18 trillion political talking point continues to be repeated endlessly in the hope that nobody in the public or press would ever be brave enough to rudely ask for some expl...
www.cato.org

Reposted by John Mullahy

The skinny on intermittent fasting
"the better the study , the less it finds"
gift link www.nytimes.com/2026/01/26/w...
Even if you don't have time to read all 83 pages of Judge Reyes's opinion barring the Trump administration from rescinding Temporary Protected Status for 350,000+ Haitians, please at least check out the four-page introduction.

It's a tour de force:

storage.courtlistener.com/recap/gov.us...

Groundhog Day | noun | a situation in which the same usually negative or monotonous experiences occur repeatedly or are felt to occur repeatedly with no change or correction
Groundhog Day | noun | a situation in which the same usually negative or monotonous experiences occur repeatedly or are felt to occur repeatedly with no change or correction
Groundhog Day | noun | a situation in which the same usually negative or monotonous experiences occur repeatedly or are felt to occur repeatedly with no change or correction
Heroes come in many forms and this is one of them

The Big N

The Law of Large Conferences: When teams can be in 10th place and still have winning records.

Principles? Principles?

Reposted by John Mullahy

#OTD 1938 the word 'googol' meaning 1.0 × 10^100 appears in the "Science Today" column in the Dunkirk (NY) Evening Observer. It was coined in 1920 by Milton Sirotta, aged 9. His uncle mathematician Edward Kasner popularized it in his 1940 book 'Mathematics and the Imagination' 1/2