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Gary Marcus

@garymarcus

AI and cognitive science, Founder and CEO (Geometric Intelligence, acquired by Uber). 8 books including Guitar Zero, Rebooting AI and Taming Silicon Valley. Newsletter (100k subscribers): garymarcus.substack.com

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Latest posts by Gary Marcus @garymarcus

ego is their only guide

04.03.2026 16:10 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Just when you thought this tragedy couldn't get any stupider.

04.03.2026 15:55 πŸ‘ 30 πŸ” 2 πŸ’¬ 4 πŸ“Œ 0
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Breaking: β€œsycophantic AI distorts belief, manufacturing certainty where there should be doubt” LLMs are an epistemic nightmare

LLMs are an epistemic nightmare.

open.substack.com/pub/garymarc...

03.03.2026 16:31 πŸ‘ 98 πŸ” 29 πŸ’¬ 5 πŸ“Œ 8

deception, cavalier attitude towards safety, openness to political corruption, to name three reasons. see my substack for lots of background.

28.02.2026 17:27 πŸ‘ 16 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I am seeing a lot of calls to boycott OpenAI β€” and I support them.

28.02.2026 17:17 πŸ‘ 128 πŸ” 27 πŸ’¬ 8 πŸ“Œ 3
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The whole thing was a scam The fix was in, and Dario never had a chance.

The whole thing was a scam
open.substack.com/pub/garymarc...

28.02.2026 16:53 πŸ‘ 66 πŸ” 17 πŸ’¬ 6 πŸ“Œ 6

It’s one thing for the government to reject @AnthropicAI’s termsβ€”- and entirely another to banish them permanently (and, absurdly and punitively declare them a supply chain risk) in favor of someone else who took pretty similar terms and happened to have given more campaign contributions.

28.02.2026 05:43 πŸ‘ 61 πŸ” 12 πŸ’¬ 5 πŸ“Œ 0

I will never not be angry at the way tech bros have told us that the danger is apocalyptic superintelligence when it was always obvious that the reason to worry is that we would put dumb AI in really stupid places.

26.02.2026 21:25 πŸ‘ 216 πŸ” 63 πŸ’¬ 10 πŸ“Œ 3

Embedding unreliable AI deep into the source code of the military without human oversight is the single stupidest thing we could do as a species.

And that is *exactly* what the United States is about to do.

26.02.2026 20:53 πŸ‘ 234 πŸ” 88 πŸ’¬ 18 πŸ“Œ 11
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America, and probably the world, stands on a precipice. Call you Congresspeople, right now.

The urgent plea of @garymarcus.bsky.social demands rapid action: the US Military, in the hands of fascists, seeks to bend Anthropic to the knee in the aims of incorporating AI into military weaponry. Gary asks us to call our political representatives right now. I just did. Now it's your turn.

26.02.2026 16:23 πŸ‘ 29 πŸ” 10 πŸ’¬ 0 πŸ“Œ 0
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America, and probably the world, stands on a precipice. Call you Congresspeople, right now.

open.substack.com/pub/garymarc...

If I could, I would like your attention for a moment. This post from @garymarcus.bsky.social is exceedingly important-please read it, share it, and take action.

26.02.2026 15:36 πŸ‘ 10 πŸ” 6 πŸ’¬ 1 πŸ“Œ 2
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America, and probably the world, stands on a precipice. Call you Congresspeople, right now.

The most urgent plea I have ever written. Please read and share.

open.substack.com/pub/garymarc...

26.02.2026 15:37 πŸ‘ 59 πŸ” 28 πŸ’¬ 4 πŸ“Œ 9
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Marilyn (Molly) Marcus, 1942-2026 Some things I learned β€” and still hope to learn β€” from my mother

open.substack.com/pub/garymarc...

I don't normally share the news of people's loved ones passing. I have yet to become comfortable with how social media handles this. But this essay by @garymarcus.bsky.social in honor of his mother is too wonderful not to share widely.

24.02.2026 13:23 πŸ‘ 20 πŸ” 3 πŸ’¬ 2 πŸ“Œ 0
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30 seconds to midnight? 15? The Trump administration is literally playing with fire.

Code red for humanity?

I am genuinely frightened.

open.substack.com/pub/garymarc...

25.02.2026 23:17 πŸ‘ 45 πŸ” 18 πŸ’¬ 8 πŸ“Œ 7
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RFK Jr's Nutrition Chatbot Recommends Best Foods to Insert Into Your Rectum Realfood.gov will happily give you the worst possible advice.

Stick it up *your* ass, chatbot.

www.404media.co/rfk-jrs-nutr...

11.02.2026 17:08 πŸ‘ 34 πŸ” 10 πŸ’¬ 5 πŸ“Œ 3
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Great reference from @garymarcus.bsky.social to this comprehensive paper.
arxiv.org/pdf/2602.06176 "Large Language Model Reasoning Failures"
Besides many other important finding, this was pretty clear:

11.02.2026 08:22 πŸ‘ 16 πŸ” 3 πŸ’¬ 5 πŸ“Œ 0
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Some disconcerting facts about AI and banking that may have profound consequences Disturbing new numbers

@garymarcus.bsky.social:

I have a hard time seeing how this doesn’t end badly. A recession, maybe worse.

11.02.2026 03:23 πŸ‘ 42 πŸ” 9 πŸ’¬ 5 πŸ“Œ 4
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KI-Kritiker Gary Marcus: Warum die Technologie an ihre Grenzen stâßt Der Hype um KI ist gigantisch, doch die Technologie hat massive SchwÀchen. Ein GesprÀch mit Gary Marcus über die drohende Finanzblase.

Wow! @garymarcus.bsky.social has made the most important German daily newspaper! Congratulations on getting the message out there!

www.sueddeutsche.de/kultur/kuens...

10.02.2026 06:09 πŸ‘ 10 πŸ” 4 πŸ’¬ 5 πŸ“Œ 1

some things never change

11.02.2026 02:04 πŸ‘ 46 πŸ” 9 πŸ’¬ 5 πŸ“Œ 1
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KI-Kritiker Gary Marcus: Warum die Technologie an ihre Grenzen stâßt Der Hype um KI ist gigantisch, doch die Technologie hat massive SchwÀchen. Ein GesprÀch mit Gary Marcus über die drohende Finanzblase.

Der Neurowissenschaftler und #KI- Unternehmer @garymarcus.bsky.social warnt seit Jahren, dass der Boom der Β»KΓΌnstlichen IntelligenzΒ« auf einem MissverstΓ€ndnis beruht. Jetzt hΓ€ufen sich auffΓ€llig die Stimmen, die auf seine Linie einschwenken: archive.is/3PFlk #Interview

08.02.2026 21:31 πŸ‘ 116 πŸ” 34 πŸ’¬ 3 πŸ“Œ 1

they also make money from Krugman, Reich, Vance, Snyder Cadwalladr etc.

Free speech is a complicated beast.

08.02.2026 22:06 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Super Bowl Matchup: Anthropic vs OpenAI You don’t have to be a football fan to enjoy the ads

Anthropic vs OpenAI Superbowl smackdown!

open.substack.com/pub/garymarc...

08.02.2026 21:28 πŸ‘ 23 πŸ” 3 πŸ’¬ 5 πŸ“Œ 0
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Four theories about the SpaceX - xAI merger Spoiler alert: it’s probably not really about synergy

Four theories about the SpaceX merger: garymarcus.substack.com/p/four-theor...

05.02.2026 20:13 πŸ‘ 25 πŸ” 4 πŸ’¬ 5 πŸ“Œ 0

best not miss!

05.02.2026 19:38 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Is the Great AI meltdown imminent? A huge shift from Nvidia doesn’t bode well for OpenAI or Generative AI maximalism:

05.02.2026 19:37 πŸ‘ 30 πŸ” 8 πŸ’¬ 1 πŸ“Œ 1
What will A.I's impact be on scientific research?

Melanie Mitchell Computer scientist
β€œI believe this impact will not be as rapid as many think. A.I. systems still can't do things humans are essential for, like asking the right questions, planning experiments and entire scientific programs, and understanding data in different contexts.”

What will A.I's impact be on scientific research? Melanie Mitchell Computer scientist β€œI believe this impact will not be as rapid as many think. A.I. systems still can't do things humans are essential for, like asking the right questions, planning experiments and entire scientific programs, and understanding data in different contexts.”

Gary Marcus Cognitive scientist
β€œPeople are greatly confused about large language models, attributing a humanlike intelligence to mimicry machines that turn out to be superficial and unreliable.
Intelligence is about reasoning flexibly in face of the unknown, and large language models continue to struggle mightily with that.”

Gary Marcus Cognitive scientist β€œPeople are greatly confused about large language models, attributing a humanlike intelligence to mimicry machines that turn out to be superficial and unreliable. Intelligence is about reasoning flexibly in face of the unknown, and large language models continue to struggle mightily with that.”

Helen Toner A.I. policy researcher
β€œI expect we'll have A.I. systems that can clearly contribute at the cutting edge of multiple scientific fields, but that you still wouldn't trust with planning summer camps for your kid.”

Helen Toner A.I. policy researcher β€œI expect we'll have A.I. systems that can clearly contribute at the cutting edge of multiple scientific fields, but that you still wouldn't trust with planning summer camps for your kid.”

@melaniemitchell.bsky.social @garymarcus.bsky.social @hlntnr.bsky.social on where AI won’t be taking science (β€œasking the right Qs, planning experiments &entire sci programs,&understanding data in diff contexts”), intelligence (β€œreasoning flexibility in the face of the unknown”) &summercamp madnessπŸ§ͺ

02.02.2026 14:20 πŸ‘ 17 πŸ” 8 πŸ’¬ 2 πŸ“Œ 0

Hehe, quoting @garymarcus.bsky.social "if you care about the security of your device or the privacy of your data, don’t use OpenClaw. Period."

(Bonus : if your friend has OpenClaw installed, don’t use their machine. A. Don’t catch a CTD β€” chatbot transmitted disease)

01.02.2026 19:52 πŸ‘ 20 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0
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OpenClaw (a.k.a. Moltbot) is everywhere all at once, and a disaster waiting to happen Not everything that is interesting is a good idea.

OpenClaw (aka Moltbot) may have gone completely viral, but it is also a disaster waiting to happen.

A PSA for why you should steer clear.

open.substack.com/pub/garymarc...

01.02.2026 21:38 πŸ‘ 61 πŸ” 17 πŸ’¬ 2 πŸ“Œ 2

but i don’t really miss X, tbh

01.02.2026 05:54 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

they cannot be trusted and it’s a security nightmare and in the making

31.01.2026 18:36 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0