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Spencer Bagley

@sbagley.bsky.social

Math professor, inveterate shitposter, pride is all year round β€οΈπŸ§‘πŸ’›πŸ’šπŸ’™πŸ’œ

1,565 Followers  |  218 Following  |  5,419 Posts  |  Joined: 28.06.2023
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Posts by Spencer Bagley (@sbagley.bsky.social)

Mathematicians too!!!

04.03.2026 07:15 β€” πŸ‘ 13    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
us military.... innocent children

us military.... innocent children

03.03.2026 17:05 β€” πŸ‘ 13215    πŸ” 2972    πŸ’¬ 40    πŸ“Œ 23

Rules lawyering for good lol

04.03.2026 03:43 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Some bullshit about sandwiches πŸ™„πŸ™„πŸ™„

03.03.2026 19:50 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

sometimes you just gotta be Reviewer #2

03.03.2026 19:38 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Every morning the cats step on me, repeatedly, back and forth, forever. I know it is love but sometimes I want to mail them to another planet.

03.03.2026 14:54 β€” πŸ‘ 6    πŸ” 1    πŸ’¬ 3    πŸ“Œ 1

Ik I'm late to this but god damn is Michael Rapaport obnoxious

03.03.2026 07:07 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

Ga zee boh

03.03.2026 06:26 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

blubber

03.03.2026 06:20 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Preview
Four Colors and Teaching Mathematics What the Four Color Theorem and its history tells us about the role of humans and proof in mathematics education.

I wrote about the story of the Four Color Theorem that I remember being told and Terence Tao and generative AI and some of my thoughts on teaching.

www.peter-keep.com/2026-03-02-f...

03.03.2026 03:06 β€” πŸ‘ 24    πŸ” 15    πŸ’¬ 2    πŸ“Œ 0
02.03.2026 13:03 β€” πŸ‘ 7954    πŸ” 1959    πŸ’¬ 8    πŸ“Œ 20

In my first class, nobody wanted to think;
in my second class, only one person showed up.
I am utterly demoralized.

02.03.2026 20:26 β€” πŸ‘ 18    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Prefigure is great and easy to learn!

02.03.2026 15:02 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Mengele shit

02.03.2026 01:34 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
01.03.2026 21:29 β€” πŸ‘ 4407    πŸ” 1233    πŸ’¬ 112    πŸ“Œ 43

THK is actually pretty easy. The Radiance, on the other hand,

01.03.2026 19:49 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Nought can Deform the Human Race
Like to the Armours iron brace
When Gold & Gems adorn the Plow
To peaceful Arts shall Envy Bow

β€”William Blake, β€œAuguries of Innocence”

01.03.2026 00:36 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

I have finally, for the first time across three save files, conquered the Trial of the Fool!!!!!

28.02.2026 20:43 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

The promise of OpenAI and Grok being used in war is that no human can be held accountable for the war crimes it commits, all the way up to where it sits on the chain of command.

The total abdication of any kind of accountability, any kind of "am I following an unjust order" moral hesitation, etc.

28.02.2026 13:30 β€” πŸ‘ 1193    πŸ” 464    πŸ’¬ 9    πŸ“Œ 17

Also: Spite. Fuck them.

28.02.2026 17:52 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Yeah

28.02.2026 17:41 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Preview
QuitGPT β€” OpenAI Execs are Trump's Biggest Donors Join the movement. Delete ChatGPT. Cancel your subscription. It's time to quit.

ACAB includes ChatGPT

quitgpt.org

28.02.2026 05:13 β€” πŸ‘ 1006    πŸ” 471    πŸ’¬ 9    πŸ“Œ 9
In 2026, colleges must teach students that this is not the end of the world. We must teach hope. Current undergraduates can barely remember a time before the threats of climate change and authoritarianism loomed to catastrophic scale. Since 2010, the future depicted in TV, books, and games has been dystopian or apocalyptic, so for our current students the end of the world feels more familiar and realistic than a future with hope. Now we are asking them to choose majors and life paths when the desirability, indeed the very existence, of whole sectors of employment are in question, due to the overwhelming promises of LLMs and machine learning. As young people hear daily that vocation after vocation may vanish into automation’s maw, and that democracy, liberty, land, sea, and sky are all in jeopardy, despair is growing. Despair is very emotionally tempting. It means freedom from the responsibility to shape the future. This is a terrifying turning point, but many generations before us have faced such turning points, and met them. We can offer our students perspective. Only a few dozen institutions on Earth are more than 900 years old, and the vast majority are universities. The university system is not a house of straw to buckle in this storm: We are the rocks that have sheltered the knowledge, hope, and truth through tumults which have toppled kingdoms while classrooms endured. We can endure this, and be a guiding light through it, but only by recentering, by teaching citizens, not workers; power, not PowerPoint; aspiration, not apocalypse. Despair is how we lose. The classroom is where we battle it. All other battles flow from here.

Ada Palmer is an associate professor of history at the University of Chicago.

In 2026, colleges must teach students that this is not the end of the world. We must teach hope. Current undergraduates can barely remember a time before the threats of climate change and authoritarianism loomed to catastrophic scale. Since 2010, the future depicted in TV, books, and games has been dystopian or apocalyptic, so for our current students the end of the world feels more familiar and realistic than a future with hope. Now we are asking them to choose majors and life paths when the desirability, indeed the very existence, of whole sectors of employment are in question, due to the overwhelming promises of LLMs and machine learning. As young people hear daily that vocation after vocation may vanish into automation’s maw, and that democracy, liberty, land, sea, and sky are all in jeopardy, despair is growing. Despair is very emotionally tempting. It means freedom from the responsibility to shape the future. This is a terrifying turning point, but many generations before us have faced such turning points, and met them. We can offer our students perspective. Only a few dozen institutions on Earth are more than 900 years old, and the vast majority are universities. The university system is not a house of straw to buckle in this storm: We are the rocks that have sheltered the knowledge, hope, and truth through tumults which have toppled kingdoms while classrooms endured. We can endure this, and be a guiding light through it, but only by recentering, by teaching citizens, not workers; power, not PowerPoint; aspiration, not apocalypse. Despair is how we lose. The classroom is where we battle it. All other battles flow from here. Ada Palmer is an associate professor of history at the University of Chicago.

This, from Ada Palmer as part of The Chronicle's survey of 11 scholars on the future of higher ed, is what I needed to end the week.

28.02.2026 00:54 β€” πŸ‘ 400    πŸ” 209    πŸ’¬ 4    πŸ“Œ 36

The company’s β€œAI” famously can’t do anything right even 50% of the time, and they are so transparently unethical that even the Facebook folks are like β€œwe probably shouldn’t use tech that way,” so sure, by all means, put them in charge of the nuclear codes or whatever.

28.02.2026 04:05 β€” πŸ‘ 48    πŸ” 14    πŸ’¬ 2    πŸ“Œ 1

Yeah was about to just wander in here and be like "whomst among us"

28.02.2026 00:05 β€” πŸ‘ 10    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I think the bigger security risk is the gestapo she runs that murders people for standing in the street and kidnaps children to put them in concentration camps. But sure, if the shoe thing gets her shitcanned, do what you gotta do.

27.02.2026 23:41 β€” πŸ‘ 6400    πŸ” 1021    πŸ’¬ 91    πŸ“Œ 12

lol stuart adams get fucked

27.02.2026 18:46 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Four Colors Suffice: How the Map Problem Was Solved - Revised Color Edition on JSTOR pOn October 23, 1852, Professor Augustus De Morgan wrote a letter to a colleague, unaware that he was launching one of the most famous mathematical conundrums i...

Four Colors Suffice, by Robin Wilson!! One of the best pop-math books I've ever read.

www.jstor.org/stable/j.ctv...

27.02.2026 16:21 β€” πŸ‘ 12    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Tired: -X points per unexcused absence

Wired: you're adults show up if you want to idgaf lol

Inspired: actually I have some ability to help encourage good habits, so you get X no-questions asked absences, after that you meet with me to discuss your progress and fully waive the grade penalty

27.02.2026 16:04 β€” πŸ‘ 10    πŸ” 1    πŸ’¬ 2    πŸ“Œ 0

Quick, somebody whip a hat on him!! 🀠

27.02.2026 14:25 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0