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ProfKeithDevlin

@profkeithdevlin.bsky.social
788 followers 481 following 693 posts

Mathematician (Emeritus Stanford), author and avid cyclist. For many years "The Math Guy" on NPR. I write an edited monthly blog for the Math. Assoc. of America called "Devlin's Angle", often about #mathed: maa.org/columns/devlinsangle

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ProfKeithDevlin @profkeithdevlin.bsky.social · 03/09/2026
Can mathematics help us understand consciousness? Part 3 of my three-episode video series on using the D-C-G model to study consciousness. maa.org/math-values/...
maa.org
Can mathematics help us understand consciousness? Part 3 – Mathematical Association of America
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ProfKeithDevlin @profkeithdevlin.bsky.social · 01/08/2026
Can mathematics help us understand consciousness - PART 2. My promised second video for the MAA. maa.org/math-values/...
maa.org
Can mathematics help us understand consciousness? Part 2 – Mathematical Association of America
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ProfKeithDevlin @profkeithdevlin.bsky.social · 01/08/2026
Can mathematics help us understand consciousness - PART 2. My promised second video for the MAA. maa.org/math-values/...
maa.org
Can mathematics help us understand consciousness? Part 2 – Mathematical Association of America
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ProfKeithDevlin @profkeithdevlin.bsky.social · 02/07/2026
The QR-code at the end of the video has been fixed. Keith
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ProfKeithDevlin @profkeithdevlin.bsky.social · 01/07/2026
Can mathematics help us understand consciousness? New post on "Devlin's Angle" for the MAA. I didn't set out to get into the consciousness quagmire. But my lifelong strategy of "identify and follow the patterns" led me right to the brink of the abyss. Part 1 of two videos. maa.org/math-values/...
maa.org
Can mathematics help us understand consciousness? – Mathematical Association of America
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ProfKeithDevlin @profkeithdevlin.bsky.social · 02/06/2026
An AI ChatBot solves a long standing Erdős problem. New "Devlin's Angle" post for the MAA. maa.org/math-values/...
maa.org
AI solves an 80 year-old Erdős problem. – Mathematical Association of America
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ProfKeithDevlin @profkeithdevlin.bsky.social · 22/05/2026
I'm looking forward to my Farewell Lecture at Southern Denmark University on 2 June, but sad that my five-year Visiting Professorship is coming to an end. I've enjoyed my annual stays in Odense - a few weeks in a civilized country not at war with itself has done wonders. www.sdu.dk/en/forskning...
sdu.dk
Keith Devlin afholder sin afskedsforelæsning den 2. juni 2026
Keith Devlin will give his farewell lecture at IMADA’s Forskertorv on June 2 from 14:00 to 15:00. After the lecture, there will be a reception from 15:00 to 16:30.
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ProfKeithDevlin @profkeithdevlin.bsky.social · 16/05/2026
www.adamkinzinger.com/p/emergency-...
adamkinzinger.com
EMERGENCY VIDEO: Jared Polis, Democratic gov of Colorado, Grants Tina Peters CLEMENCY
To say I’m furious is an understatement.
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ProfKeithDevlin @profkeithdevlin.bsky.social · 05/05/2026
The tool/weapon duality of mathematics. New "Devlin's Angle" post for the Math Assoc of America. A follow-up to last month's post. Do you know who I quote at the start of my essay? The answer may surprise you. maa.org/math-values/...
maa.org
The Tool/Weapon Duality of Mathematics – Mathematical Association of America
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ProfKeithDevlin @profkeithdevlin.bsky.social · 20/04/2026
The most impressive politician by far who I'd like to be our next President is a man with no party. His former party is now out-and-out Nazi. His political leanings are far from mine. But he's the person I want to lead us out of the mess the GOP has created. open.substack.com/pub/adamkinz...
open.substack.com
Is the United States Worth Saving?
Every generation has faced a moment when quitting seemed reasonable — and every generation refused. We have no right to be the first.
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ProfKeithDevlin @profkeithdevlin.bsky.social · 18/04/2026
Intriguing perspective on MAGA from "The Last Republican", former GOP Congressman and impressive American patriot Adam Kinzinger open.substack.com/pub/adamkinz...
open.substack.com
The Humiliation Is the Point
Humiliating the MAGA faithful only binds them more tightly to Trump
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ProfKeithDevlin @profkeithdevlin.bsky.social · 13/04/2026
And still the Republican Party in Congress worships him and stands (in silence) behind everything he does. Watch how they vote; that's where their beliefs lie.
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ProfKeithDevlin @profkeithdevlin.bsky.social · 10/04/2026
open.substack.com/pub/adamkinz...
open.substack.com
America Went Silent — and Iran Won the Meme War
The cost of dismantling every information weapon we had
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ProfKeithDevlin @profkeithdevlin.bsky.social · 08/04/2026
My new "Devlin's Angle" for the MAA dropped today. Fortunately, the USA did not drop nukes on Iran (which was clearly the only way they could obliterate 90 million human beings, as our President threatened). maa.org/math-values/...
maa.org
How do you respond when you are asked to use your expertise to help your nation? – Mathematical Association of America
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ProfKeithDevlin @profkeithdevlin.bsky.social · 07/04/2026
Unfortunately, this appeals to his base. Roughly 1 in 3 Americans. And Trump knows it. So do the Congressional Republicans, who continue to support him. open.substack.com/pub/robertre...
open.substack.com
Trump threatens a “whole civilization will die tonight."
This brings America into a new immoral universe
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ProfKeithDevlin @profkeithdevlin.bsky.social · 07/04/2026
open.substack.com/pub/snyder/p...
open.substack.com
The president speaks genocide
The words, the law, the future
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ProfKeithDevlin @profkeithdevlin.bsky.social · 07/04/2026
open.substack.com/pub/adamkinz...
open.substack.com
“A Whole Civilization Will Die Tonight”
What Was Said, and What It Means- for our soul
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ProfKeithDevlin @profkeithdevlin.bsky.social · 04/04/2026
Remember, the entire Congressional Republican Party is still staunchly behind Trump. Not a one has voted against him, let alone remove him from office, which they have the power to do. www.youtube.com/watch?v=HWjG...
youtube.com
'Is this the worst thing Trump has ever done?' James O'Brien
YouTube video by LBC
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Purple Teacher @peaceandteachin.bsky.social · 04/04/2026
Collins will disapprove in public and then she will vote for the bill. Maine deserves better. #ProudBlue#Voices4Victory #OneV1 apple.news/A2cp7WgMAQcy...
apple.news
Susan Collins knocks funding cuts in White House budget proposal — The Hill
Senate Appropriations Chair Susan Collins (R-Maine) on Friday knocked proposed eliminations and reductions to domestic program spending in the White House’s fiscal 2027 budget, a sign she may not be e...
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ProfKeithDevlin @profkeithdevlin.bsky.social · 04/04/2026
What made today's Republicans not only anti-American, but pure evil? This is what my (aging) generation thinks about it. www.youtube.com/watch?v=itcb...
youtube.com
Bruce Springsteen - Chimes of Freedom. Minneapolis March 31, 2026
YouTube video by Fiona Sigalla
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ProfKeithDevlin @profkeithdevlin.bsky.social · 22/03/2026
Good piece by former Republican Congressman Adam Kinzinger. He wants to believe his former colleagues are still loyal Americans. The evidence says otherwise. Republican politicians & voters long ago abandoned either the party or else any shred of human decency open.substack.com/pub/adamkinz...
open.substack.com
A President Who Cheers a Veteran’s Death Is Unfit for Office, and EVIL
Robert Mueller was a wounded Marine, a decorated veteran, and a public servant who spent his life defending the rule of law. The President of the United States responded to his death with glee.
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ProfKeithDevlin @profkeithdevlin.bsky.social · 21/03/2026
Truth Social: “Robert Mueller just died. Good, I’m glad he’s dead. He can no longer hurt innocent people! President DONALD J. TRUMP.” This is who the entire Republican Party supports as POTUS. To them, he has charisma. Others think differently. No Democrat President ever had such staunch support.
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ProfKeithDevlin @profkeithdevlin.bsky.social · 10/03/2026
One of the best TV news programs in the US today is LBC. Rule Britannia, anyone? 🙄 www.youtube.com/watch?v=GyJH...
youtube.com
Simon Marks: Trump has betrayed Americans and Iranians
YouTube video by LBC
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ProfKeithDevlin @profkeithdevlin.bsky.social · 09/03/2026
What a massive fail by the #BBC. This is the prestigious Reith Lectures series they have censored. When senior positions are given to weak people, democracy can crumble fast. www.youtube.com/shorts/ZHhbb...
youtube.com
The BBC Censored Me ...
YouTube video by Rutger Bregman
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ProfKeithDevlin @profkeithdevlin.bsky.social · 05/03/2026
Why is most ed tech so poor? Some thoughts from an ed tech developer. New "Devlin's Angle" post for the MAA maa.org/math-values/...
maa.org
Two Recent News Stories on Educational Technology Carry Good News and Bad – Mathematical Association of America
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emptywheel @emptywheel.bsky.social · 03/03/2026
Some questions that no one has asked: Why Kristi Noem put an inexperienced 20-something in charge of terrorist prevention. www.propublica.org/article/trum...
propublica.org
“The Intern in Charge”: Meet the 22-Year-Old Trump’s Team Picked to Lead Terrorism Prevention
One year out of college and with no apparent national security expertise, Thomas Fugate is the Department of Homeland Security official tasked with overseeing the government’s main hub for combating v...
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Barred and Boujee aka Madiba Dennie @audrelawdamercy.blacksky.app · 03/03/2026
Two Kansans are suing in state court over the new law invalidating trans people's licenses & deputizing bathroom bounty hunters And they're arguing on state law grounds alone Kansas's anti-trans law violates federal law too, but federal courts can't be trusted ballsandstrikes.org/scotus/kansa...
ballsandstrikes.org
Trans Kansans are Right to Distrust Federal Courts
Transgender Kansans are challenging a new discriminatory law in state court, refusing to leave their freedom up to an untrustworthy federal judiciary.
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Marc Elias @marcelias.bsky.social · 03/03/2026
NEW: President Donald Trump and his MAGA allies are not letting a shooting war in the Middle East distract them from their social media campaign for passage of the SAVE America Act. www.democracydocket.com/news-alerts/...
democracydocket.com
As Iran War escalates, Trump and allies focus on pushing SAVE America Act
While bombs fall on U.S. bases, Trump is posting about the SAVE America Act.
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darren32359.bsky.social @darren32359.bsky.social · 03/03/2026
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ProfKeithDevlin @profkeithdevlin.bsky.social · 24/02/2026
I guess this is the State of the Union message that matters to everyone on the planet except the Republican States in what was once a union.
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ProfKeithDevlin @profkeithdevlin.bsky.social · 19/02/2026
I see my birth nation, the UK, still believes that no one is above the law, even royalty. I wish the country that invited me to move here in 1987, and where I have been a citizen since 2000, believed the same. The US used to be such a nation. It pains me that such is no longer the case.
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Nolan Hicks @ndhapple.bsky.social · 06/02/2026
I'd simply ask for Congressional Republicans to give a crap as what's happening to blue states right now could easily happen to red states during a subsequent administration. This is a, frankly, dangerous precedent.
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Bob @psychobob4q2.bsky.social · 06/02/2026
Normal people would be prosecuted and jailed for a hate crime. Trump gets off with an 'Ooops' ????
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Seb Schmoller @schmoller.net · 03/02/2026
Hull-born Stanford mathematician @profkeithdevlin.bsky.social has been writing a monthly column about mathematics for the Mathematical Association of America since 1991. This month's piece is in memory of Alex Pretti and Renee Nicole Good: maa.org/math-values/...
In memory of the 37-year-old Minneapolis residents Alex Pretti and Renee Nicole Good, ordinary American citizens who agents of our federal government publicly executed recently. (There are least six others who ICE agent have murdered this year so far.)

Since September 1991, the MAA has afforded me the enormous privilege to express my personal opinion in its monthly members communication; the print magazine FOCUS from September 1991 to December 1997, and the online e-zine (currently the MATH VALUES section of the MAA website, originally MAA Online) from January 1996 until today. (My goal/hope is to continue to March 2027, when I turn 80; you’ll soon be free of me, dear MAA colleagues.)
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MAA @joinmaa.bsky.social · 03/02/2026
In a rare pause, Keith Devlin reflects on why he could not write as usual and what this moment means for our shared values as a mathematical community. Read the Math Values post: bit.ly/49YfHSA
maa.org
This month’s post is that there is no post this month – Mathematical Association of America
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Tim Corica @tcorica.bsky.social · 03/02/2026
An important choice by @profkeithdevlin.bsky.social .social , one of the leading math communicators of our time. #iTeachMath
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ProfKeithDevlin @profkeithdevlin.bsky.social · 03/02/2026
My new "Devlin's Angle" post for the MAA. maa.org/math-values/...
maa.org
This month’s post is that there is no post this month – Mathematical Association of America
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ProfKeithDevlin @profkeithdevlin.bsky.social · 02/02/2026
It's spring in Sonoma County. Time to bike over to one of my favorite local wineries, a 27 mile round trip involving two massive climbs over Sonoma Mountain. (Well, they seem massive at my age. 🥴)
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Sue in Rockville 💙🦋💙🦋💙🦋 @sueinrockville.bsky.social · 28/01/2026
My boss now and forever Thank you!
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Bruce Springsteen @brucespringsteen.net · 28/01/2026
I wrote this song on Saturday, recorded it yesterday and released it to you today in response to the state terror being visited on the city of Minneapolis. It’s dedicated to the people of Minneapolis, our innocent immigrant neighbors and in memory of Alex Pretti and Renee Good. Stay free
youtu.be
Bruce Springsteen - Streets Of Minneapolis (Official Audio)
YouTube video by Bruce Springsteen
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ProfKeithDevlin @profkeithdevlin.bsky.social · 28/01/2026
In the 1990s I (a mathematician) collaborated with a London-based sociologist on a project to improve the efficiency of large teams working on EU construction projects, on the basis of which, after 9/11, I was asked to join an NSA-funded project to improve Defense Intelligence Analysis. Ho hum 🤔
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Adam Kinzinger @adamkinzinger.substack.com · 28/01/2026
“If you raise your voice I’ll erase your voice” said an ice agent. Insane
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Happy National Hamburger Day @birdrespecter.bsky.social · 28/01/2026
We are truly in the age of the troglodyte
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southpaw @nycsouthpaw.bsky.social · 28/01/2026
Looking forward to hosting the World Cup in a couple months!
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ProfKeithDevlin @profkeithdevlin.bsky.social · 28/01/2026
Life under a Republican administration
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ProfKeithDevlin @profkeithdevlin.bsky.social · 28/01/2026
Life under a Republican administration
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ProfKeithDevlin @profkeithdevlin.bsky.social · 28/01/2026
Italy is right. They should not accept ICE agents to provide "security" at the Winter Olympics next month. The agency is a bunch of poorly trained, trigger-happy sociopathic thugs. www. www.theguardian.com/us-news/2026...
theguardian.com
‘A militia that kills’: uproar in Italy over ICE security role at Winter Olympics
Milan mayor says agents ‘not welcome’ in co-host city and Italy can take care of security itself
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ProfKeithDevlin @profkeithdevlin.bsky.social · 26/01/2026
Sunset-lit reception at Lawrence Hall of Science in Berkeley last Thursday
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ProfKeithDevlin @profkeithdevlin.bsky.social · 26/01/2026
This is America under a Republican administration. Republicans in Congress, and their voters, don't give a shit (many actively support it). But the majority of Americans are appalled by their lack of morality and the wanton cruelty. www.edweek.org/leadership/o...
edweek.org
‘What Sort of Nation Terrorizes Children?’: A Teacher’s View From Minneapolis (Opinion)
My students live with the knowledge that anyone they love could be taken by ICE at any moment.
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ProfKeithDevlin @profkeithdevlin.bsky.social · 26/01/2026
adamkinzinger.substack.com/p/emergency-...
adamkinzinger.substack.com
Emergency Video: The Second Amendment Doesn't Care About Your Pro-Fascist Agenda
I have seen, as all of you have, fake arguments put out by so called “second amendment” proponents.
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