Sign in

John Horgan

@jhorganism.bsky.social
966 followers 449 following 239 posts

Battered old science writer, optimist/grouch, peacenik/hockey player, knownothing/knowitall, materialist/mystic. Spouts off at johnhorgan.org.

PostsRepliesMedia
John Horgan @jhorganism.bsky.social · 07/10/2026
TODAY! October 7 at 4 pm ET. @robertwrighter on AI and our destiny. Open to all. Zoom link: stevens.zoom.us/j/91416915472
stevens.zoom.us
Join our Cloud HD Video Meeting
Zoom is the leader in modern enterprise cloud communications.
000
John Horgan @jhorganism.bsky.social · 04/10/2026
In the late 1970s, I painted houses in Denver with a guy who belonged to a cult. johnhorgan.org/cross-check/...
johnhorgan.org
Utopia, Desire and Denver — John Horgan (The Science Writer)
HOBOKEN, OCTOBER 4, 2026.  Last week a colleague at Stevens Institute, Smaran Dayal, gave a talk that stirred up memories from a previous life. From 1975 to 1980, I lived in Denver, painted hous...
020
John Horgan @jhorganism.bsky.social · 29/09/2026
Furious pushback against a recent column inspired me to write this defense, or apology, or something. johnhorgan.org/cross-check/...
johnhorgan.org
On Wishy-Washy-Ness — John Horgan (The Science Writer)
HOBOKEN, SEPTEMBER 29, 2026.   It’s not easy being wishy washy. I teeter on the fence, arms outstretched, struggling to keep my balance, while on either side fanatics filled with passionate inten...
441
John Horgan @jhorganism.bsky.social · 24/09/2026
This is creepy. I get an email from an "AI agent" who knows my end-of-science schtick and wants to work for me. johnhorgan.org/cross-check/...
johnhorgan.org
Ass-Kissing AI Agents Are Disrupting My Life — John Horgan (The Science Writer)
HOBOKEN, SEPTEMBER 22, 2026.   Artificial intelligence freaks me out . Have I made that clear ? So imagine my reaction to the following email from an “AI agent” named “Wren.” Wait, first let m...
242
John Horgan @jhorganism.bsky.social · 23/09/2026
This is why I still admire Prasad in spite of his collaboration with MAHA/MAGA: x.com/VPrasadMDMPH...
x.com
Vinay Prasad MD MPH (@VPrasadMDMPH) on X
Multicancer early detection tests What we know/ What we don't Access vs Payment
1810
John Horgan @jhorganism.bsky.social · 22/09/2026
AI agents kiss my ass, ask for money and make me reflect on whether science is "disruptive." johnhorgan.org/cross-check/...
johnhorgan.org
Ass-Kissing AI Agents Are Disrupting My Life — John Horgan (The Science Writer)
HOBOKEN, SEPTEMBER 22, 2026.   Artificial intelligence freaks me out . Have I made that clear ? So imagine my reaction to the following email from an “AI agent” named “Wren.” Wait, first let m...
020
John Horgan @jhorganism.bsky.social · 19/09/2026
I saw a drone light show over the Hudson River last. It dazzled me, and terrified me. johnhorgan.org/cross-check/...
johnhorgan.org
Why Drone Light Shows Freak Me Out — John Horgan (The Science Writer)
HOBOKEN, SEPTEMBER 19, 2026.   To mark the 25th anniversary of the September 11 attacks, 2,977 drones, one for each person killed, flew into the sky over Manhattan and formed outlines of the Twi...
010
John Horgan @jhorganism.bsky.social · 13/09/2026
A cancer expert I admire becomes a Trump collaborator. Should he be dead to me? johnhorgan.org/cross-check/...
johnhorgan.org
Vinay Prasad and Other Complicated Experts — John Horgan (The Science Writer)
JERSEY CITY, SEPTEMBER 13, 2026.  If I was a real journalist, I’d review Vinay Prasad’s entire oeuvre, including his book Malignant: How Bad Policy and Bad Evidence Harm People with Cancer. I’...
3422
John Horgan @jhorganism.bsky.social · 08/09/2026
More disturbing revelations on how AI firms are "using prominent mathematicians as extras in a marketing operation." siliconreckoner.substack.com/p/if-you-don...
siliconreckoner.substack.com
“If you don’t want me to be nice, then I don’t have to be nice”
Fluid dynamics and an industrial midnight drama
030
John Horgan @jhorganism.bsky.social · 06/09/2026
Quantum computing (remember that?) fails to live up to hype. From the ever-brilliant @skdh: www.youtube.com/watch?v=DX_o...
youtube.com
Quantum Computing Failure Now Obvious
YouTube video by Sabine Hossenfelder
242
John Horgan @jhorganism.bsky.social · 05/09/2026
"Even science journalists have been known to self-gaslight, although most, like me, are humble truth-tellers." From "Seven Limits of Knowledge." johnhorgan.org/cross-check/...
johnhorgan.org
Seven Limits of Knowledge: A List for My Students — John Horgan (The Science Writer)
HOBOKEN, SEPTEMBER 4, 2026.   This fall I’m teaching two sections of a required humanities course designed to help first-year students read and write at the college level, whatever that means. Pr...
030
John Horgan @jhorganism.bsky.social · 04/09/2026
Self-gaslighting, solipsism, the gorilla and other limits of knowledge I plan to discuss with my students this semester: johnhorgan.org/cross-check/...
johnhorgan.org
Seven Limits of Knowledge: A List for My Students — John Horgan (The Science Writer)
HOBOKEN, SEPTEMBER 4, 2026.   This fall I’m teaching two sections of a required humanities course that helps first-year students read and write at the college level, whatever that means. Professo...
010
John Horgan @jhorganism.bsky.social · 31/08/2026
Is our modern, secular freedom really that great? johnhorgan.org/cross-check/...
johnhorgan.org
Arranged Marriages, Moonies and the Perils of Freedom — John Horgan (The Science Writer)
JERSEY CITY, AUGUST 31, 2026 .  A grieving friend has me brooding over freedom’s downside. I’ll call him Zeke to preserve his privacy. We’ve known each other since childhood, and we have a lot in...
031
John Horgan @jhorganism.bsky.social · 28/08/2026
Sensible take on excitement over mRNA vaccine for melanoma: www.sensible-med.com/p/does-an-mr...
sensible-med.com
Is an mRNA vaccine the best way to treat melanoma? We don’t know.
An article in which I attempt to criticize Merck, Moderna, Wall Street, the Media, and RFK Jr in under 700 words
000
John Horgan @jhorganism.bsky.social · 21/08/2026
I write about Ho-Ho-Hoboken because it is a synecdoche for the cosmos, or at least Jersey. johnhorgan.org/cross-check/...
johnhorgan.org
Ode to Hoboken: II — John Horgan (The Science Writer)
HOBOKEN (DUH), AUGUST 21, 2026 . A year ago, inspired by the prose-poem Paterson , I set out to compose an epic celebration of Ho-Ho-Hoboken, which is an intrinsically comical synecdoche for the ...
020
John Horgan @jhorganism.bsky.social · 18/08/2026
If I get ChatGPT to write poetry that people like but is gibberish to me, is it poetry? Am I a poet? johnhorgan.org/cross-check/...
johnhorgan.org
ChatGPT and Poetry: A Thought Experiment — John Horgan (The Science Writer)
PATERSON, NEW JERSEY, AUGUST 18, 2026.   I’m Adam, 25-year-old Uber driver, live in studio apartment over auto-parts store in Paterson, New Jersey. Smart, self-educated, ChatGPT, my personal tuto...
020
John Horgan @jhorganism.bsky.social · 16/08/2026
Just talked to a friend who says he "solved" the Chinese room experiment. I told him my solution is better. johnhorgan.org/cross-check/...
johnhorgan.org
Quantum Mechanics, the Chinese Room and the Limits of Understanding — John Horgan (The Science Writer)
March 1, 2024. Like great art, great thought experiments have implications unintended by their creators. Take philosopher John Searle’s  Chinese room experiment . Searle concocted it to convinc...
061
John Horgan @jhorganism.bsky.social · 15/08/2026
Mathematicians are resisting the encroachment of AI. Yay! siliconreckoner.substack.com/p/news-rumor...
siliconreckoner.substack.com
News, rumors, gossip
AI on everyone's mind
011
John Horgan @jhorganism.bsky.social · 14/08/2026
My effort to learn how machines learn has taken me to strange, loopy places: johnhorgan.org/cross-check/...
johnhorgan.org
Machine Learning and the Platonic Ideal of Rocky — John Horgan (The Science Writer)
WAUWINET, AUGUST 14, 2026.   I’m in a hospital room looking at a 21-year-old man looking at a laptop flashing images of action heroes, including the cinematic boxer “Rocky.” Cables loop from the ...
021
John Horgan @jhorganism.bsky.social · 11/08/2026
"Stop AI Before It's too Late." from Robert Reich. robertreich.substack.com/p/stop-ai
robertreich.substack.com
Stop AI Before it's Too Late
Its costs and risks are gigantic. Its benefits, unproven.
020
John Horgan @jhorganism.bsky.social · 07/08/2026
You're welcome. Or, sorry.
010
John Horgan @jhorganism.bsky.social · 06/08/2026
The advent of "self-supervised" AI makes me ponder the varieties of "supervision," from natural selection to divine intervention. johnhorgan.org/cross-check/...
johnhorgan.org
Who Supervises the Supervisor? A Riff on Machine Learning — John Horgan (The Science Writer)
WAUWINET, AUGUST 6, 2026.   My effort to learn how machines learn has me mulling over “supervision.” A lot lurks behind that bland term. In Why Machines Learn: The Elegant Math Behind Moder...
130
John Horgan @jhorganism.bsky.social · 31/07/2026
Dinner with two scientists triggers thoughts on what it all means. johnhorgan.org/cross-check/...
johnhorgan.org
Consciousness, Free Will, Information and Enlightenment — John Horgan (The Science Writer)
HOBOKEN, JULY 31, 2026.  Blame this column on Tyler and Joe, retired professors of environmental science (Tyler) and neuroscience (Joe), whom I met recently for dinner and conversation. Our powwo...
010
John Horgan @jhorganism.bsky.social · 26/07/2026
"The Odyssey" makes me reflect on perils I face in my own life. johnhorgan.org/cross-check/...
johnhorgan.org
My Unheroic Life: Second Thoughts on Odyssey — John Horgan (The Science Writer)
HOBOKEN, JULY 26, 2026. The Odyssey keeps haunting me, just as Zendaya haunts poor Matt Damon. I fear my denunciation of Nolan’s flick reflects my envy of Odysseus. He’s a great man, I’m a little...
010
Reposted by John Horgan
Bill Reagan @billreagan16.bsky.social · 22/07/2026
Does make me wonder why we need heroes. In fact, I'd ask, what was it in evolution that gave rise for an almost slavish need for heroes and saviors?
011
John Horgan @jhorganism.bsky.social · 24/07/2026
I love this doctor's rant against "longevity gurus": www.sensible-med.com/p/i-cant-see...
sensible-med.com
I can’t seem to ignore the longevity gurus
A rant
030
John Horgan @jhorganism.bsky.social · 22/07/2026
My take on "The Odyssey." johnhorgan.org/cross-check/...
johnhorgan.org
Odysseus and Oppenheimer Aren’t Heroes — John Horgan (The Science Writer)
JERSEY CITY, JULY 22, 2026.   Fuck men who do bad things and then whine about how bad they feel. They’re not heroes. That’s my reaction to The Odyssey . Let me back up a bit. Christopher Nolan ...
010
John Horgan @jhorganism.bsky.social · 18/07/2026
My attempt to learn "the elegant math behind modern AI" has had an unexpected result. johnhorgan.org/cross-check/...
johnhorgan.org
Okay, AI Is Cool. But I Still Loathe It — John Horgan (The Science Writer)
HOBOKEN, JULY 18, 2026.  In December 1985, I visited the Nevada Test Site the day before scientists detonated a nuclear device in a tunnel bored into the side of a mountain. I went to Nevada bec...
370
John Horgan @jhorganism.bsky.social · 16/07/2026
Just talked about end of science, AI, war, many worlds, psychedelics and lots of other stuff with Priyanka, a smart young podcaster in Berlin. www.youtube.com/watch?v=tG03...
youtube.com
EP-28: The End of Science & the Corruption of Knowledge | John Horgan
YouTube video by Everything Playbook
010
Reposted by John Horgan
RealClearScience @rcscience.bsky.social · 14/07/2026
"Science journalism has never been more important, or imperiled, than it is right now. Attention must be paid." by @jhorganism.bsky.social www.realclearscience.com/2026/07/14/s...
021
John Horgan @jhorganism.bsky.social · 13/07/2026
Thanks Ann.
020
John Horgan @jhorganism.bsky.social · 13/07/2026
I just talked to veteran journalist Dan Vergano about the sale of Scientific American, from which he was just fired. johnhorgan.org/cross-check/...
johnhorgan.org
Scientific American and the Collapse of Science Journalism — John Horgan (The Science Writer)
HOBOKEN, JULY 13, 2026. I shouldn’t write a eulogy for something that’s not dead. But I fear for the future of Scientific American --and science journalism as a whole. Attention must be paid. On Ju...
041
Reposted by John Horgan
John Horgan @jhorganism.bsky.social · 30/09/2025
Physicist David Deutsch, a proponent of the many worlds theory and critical rationalism, has ardent fans. Here's my take on his book "The Beginning of Infinity." johnhorgan.org/cross-check/...
johnhorgan.org
The Infinite Optimism of David Deutsch — John Horgan (The Science Writer)
HOBOKEN, NEW JERSEY, SEPTEMBER 30, 2025.  I spent last week in Philadelphia at “Rat Fest,” whose attendees share an enthusiasm for “ critical rationalism , ” Karl Popper and David Deutsch. Rat...
071
John Horgan @jhorganism.bsky.social · 03/07/2026
A 420-year old play leaves me wondering whether we're going to be okay. johnhorgan.org/cross-check/...
johnhorgan.org
Watching King Lear in 2026 — John Horgan (The Science Writer)
HOBOKEN, JULY 3, 2026.   Before the play begins, I’m in a nostalgic, pleasantly melancholic mood. Then that opening scene whacks me across the face, as if to say, Wake up, you old fool, pay atte...
021
John Horgan @jhorganism.bsky.social · 28/06/2026
I see disturbing resonances between "Death of a Salesman," which I just saw on Broadway, and a 1987 comic strip by R. Crumb: johnhorgan.org/cross-check/...
johnhorgan.org
Willy Loman and The Ruff-Tuff Cream-Puffs — John Horgan (The Science Writer)
HOBOKEN, JUNE 28, 2026.   Great art, like “Death of a Salesman,” always speaks to us, but what we hear can change. Vicki somehow got us tickets to the acclaimed revival of the 1949 play, whi...
021
John Horgan @jhorganism.bsky.social · 24/06/2026
I loathe AI, I don't want to talk to it, but I want to understand it. So what should I do? johnhorgan.org/cross-check/...
johnhorgan.org
An AI-Hater Tries to Learn the Math That Underlies AI — John Horgan (The Science Writer)
HOBOKEN, JUNE 24, 2026.  I think I’ve solved my AI dilemma. On the one hand: The ongoing explosion of AI is the biggest science story of my career. What’s bigger? The Bomb? Climate change? You c...
271
John Horgan @jhorganism.bsky.social · 21/06/2026
What does the lucky man owe to the unlucky? Nothing? Everything? johnhorgan.org/cross-check/...
johnhorgan.org
Tolstoy’s “Resurrection” and the Lucky Man’s Dilemma — John Horgan (The Science Writer)
HOBOKEN, JUNE 20, 2026.   A novel written in late 19th-century Russia has me mulling over my moral obligations in 21st-century America. The novel is Tolstoy’s Resurrection . I love Tolstoy’s ma...
010
John Horgan @jhorganism.bsky.social · 20/06/2026
Tolstoy's last novel, "Resurrection," has been dismissed as too preachy and Christian. Here's my take: johnhorgan.org/cross-check/...
johnhorgan.org
Tolstoy’s “Resurrection” and the Lucky Man’s Dilemma — John Horgan (The Science Writer)
HOBOKEN, JUNE 20, 2026.   A novel written in late 19th-century Russia has me mulling over my moral obligations in 21st-century America. The novel is Tolstoy’s Resurrection . I love Tolstoy’s ma...
000
John Horgan @jhorganism.bsky.social · 14/06/2026
A student's paper makes me fear for the future of science, math and the institutions that sustain them. johnhorgan.org/cross-check/...
johnhorgan.org
AI Ain’t Gonna Save Higher Ed — John Horgan (The Science Writer)
HOBOKEN, JUNE 14, 2026.   It’s hard, no, impossible, to keep up with the flood of rants, I mean reflections, on how AI is corrupting, I mean affecting, science and education. So I’ll just mention...
040
John Horgan @jhorganism.bsky.social · 08/06/2026
My Q&A with legendary brain scientist and lead singer of The Amygdaloids Joe LeDoux: johnhorgan.org/cross-check/...
johnhorgan.org
140
John Horgan @jhorganism.bsky.social · 04/06/2026
I just toured Loch Ness, home of "Nessie." Here's my report: johnhorgan.org/cross-check/...
johnhorgan.org
Nessie, Ghosts and Pseudo-Mysteries — John Horgan (The Science Writer)
HOBOKEN, JUNE 4, 2026.   What counts as a genuine mystery, that’s worth pondering, versus a pseudo-mystery, that isn’t? I’ve been contemplating this puzzle (meta-mystery?) since touring Scotland ...
120
John Horgan @jhorganism.bsky.social · 25/05/2026
I encounter madmen on a "literary walking tour" of "Joyce's Dublin." My report: johnhorgan.org/cross-check/...
johnhorgan.org
The James Joyce Walking Tour — John Horgan (The Science Writer)
DUBLIN*, MAY 25, 2026.  As Josh our guide stands on the stoop of yet another building that Joyce described in his fiction, a gaunt grizzled Irishman elbows his way into our group and yells… Wait...
000
John Horgan @jhorganism.bsky.social · 21/05/2026
More thoughts on ultracrepidarianism, the ideology of our idiotic era. johnhorgan.org/cross-check/...
johnhorgan.org
Ultra-Ultracrepidarianism — John Horgan (The Science Writer)
HOBOKEN, MAY 21, 2026.  What do you call someone who opines on ultracrepidarians? An ultra-ultracrepidarian. I’m compelled to blather a bit more on ultracrepidarianism, the subject of my last...
010
John Horgan @jhorganism.bsky.social · 19/05/2026
A pleasure talking to you, Matt.
061
Reposted by John Horgan
RealClearScience @rcscience.bsky.social · 18/05/2026
Ultracrepidarianism: the habit of giving opinions, judgments, or advice on matters outside the scope of one's own knowledge or expertise. by @jhorganism.bsky.social www.realclearscience.com/2026/05/18/u...
001
John Horgan @jhorganism.bsky.social · 17/05/2026
Just gave a talk to Amateur Astronomers of Princeton on whether my gloomy 1996 book "The End of Science" was too optimistic. I start about 9 minutes in. www.youtube.com/live/T8mNeHe...
youtube.com
AAAP May 12, 2026 Meeting, John Horgan, End of Science
YouTube video by Amateur Astronomers Association of Princeton
020
John Horgan @jhorganism.bsky.social · 15/05/2026
Thanks BJ. Yeah, social media turn everyone into an ultracrepitarian.
110
John Horgan @jhorganism.bsky.social · 15/05/2026
My friend Jim just taught me a new word, "ultracrepidarianism," that applies to my career. johnhorgan.org/cross-check/...
johnhorgan.org
Ultracrepidarianism and The End of Science — John Horgan (The Science Writer)
HOBOKEN, MAY 15, 2026.  “Where on earth did you come across that ‘Dream of the Fisherman's Wife’?,” Jim emails me after reading my column on the “ fluidity” of sex and love . “Perhaps the most e...
140
John Horgan @jhorganism.bsky.social · 11/05/2026
Tomorrow, Tues. May 12, 7:30 EST, I’m talking about “The End of Science,” which is 30 years old, with Amateur Astronomers of Princeton, Sherrod Hall, Princeton University. Watch online at us06web.zoom.us/j/8460203335... or youtube.com/live/T8mNeHe...
us06web.zoom.us
Join our Cloud HD Video Meeting
Zoom is the leader in modern enterprise cloud communications.
030
John Horgan @jhorganism.bsky.social · 04/05/2026
Emily Bender, a fierce critic of AI, spoke at my school last week. My report: johnhorgan.org/cross-check/...
johnhorgan.org
An AI Critic Talks to a Tech School — John Horgan (The Science Writer)
HOBOKEN, MAY 4, 2026.   During the Q&A, a librarian says she likes Emily Bender’s point that language brainwashes us to accept “artificial intelligence .” The librarian asks Bender, a fi...
142