Gary Marcus

OG GenAI Skeptic; spoke at US Senate. Warned about hallucinations in 2001. Advocating world models & neurosymbolic AI ever since. Author, Marcus on AI & 6 books

[Gary Marcus @GaryMarcus]

Three thoughts on what really matters:

1. Fuck cancer
2. Friends are irreplaceable
3. The new "Marcus test" for AI is when AI makes a significant dent on cancer

May that happen sooner, much sooner, rather than later.

In memory of my childhood friend Paul.

[Indian Society of Artificial Intelligence and Law @IndianSocietyAI]

We welcome this saner and practical stance.

[Gary Marcus @GaryMarcus]

oops!

[Scientific American @sciam]

In yet another sign of AI’s surging dominance over human minds, OpenAI recently claimed to solve one of math’s biggest questions: the Navier-Stokes problem. But now three mathematicians have showed OpenAI’s work dodges the question rather than solving it.
https://t.co/5Fbf4R460T

[Gary Marcus @GaryMarcus]

“We talk about A.I. as though it were a weather event, a storm [but] A.I. is not an uncontrollable force of nature — it is built by humans and it can be controlled by humans.”

– Amandeep Singh Gill [@gioasempre], the U.N.’s under secretary general and special envoy for emerging technologies

in @nytimes

[NIK @ns123abc]

🚨 BREAKING: US Treasury Secretary Scott Bessent declares OpenAI management personally responsible for HuggingFace hack

> "The Hugging Face incident, that is the responsibility of the OpenAI management, not a bunch of agents."

> "It is humans who are responsible, not the AI."

> "What we shouldn’t do on safety is to give these labs a liability exemption, which is what they are asking for."

> "The best way to guarantee safety is that the creators are liable for what they build and generate."

It’s OVER

[Gary Marcus @GaryMarcus]

@maninpeakedcap it all developed in a week; i anticipate many more will sign. hopefully all :)

[Carl Quintanilla @carlquintanilla]

Another delayed IPO. First, Holtec.

Now, SB Energy “has been delayed, as investors question the company’s sought-after valuation of $50 billion or more, according to interviews with four people familiar ..”

@nytimes
https://t.co/oHIn0aXeCV

[Gary Marcus @GaryMarcus]

🚨 Incredible AI news from the UN (plus my own remarks): https://t.co/DyrZRy6EtM

[Gary Marcus @GaryMarcus]

@adiebald @eserickxavier almost anyone would have more integrity imho

[Gary Marcus @GaryMarcus]

Speaking entirely without vested interest, right?

[Kalshi @Kalshi]

BREAKING: Sam Altman to brief UN Security Council Wednesday on AI

[es.erickXavier @eserickxavier]

@GaryMarcus The race-car salesmen are briefing the UN on speed limits this week

[Gary Marcus @GaryMarcus]

@lwoodhouse I have been deeply critical of both publicly and hardly side with either but acknowledged some points of agreement. I don’t really think the situation is parallel.

[Gary Marcus @GaryMarcus]

If EA’s and Doomers were serious about making AI safe, they would bone up on cybersecurity and use every tool available to keep AI under control, instead of siding on X with the very people building reckless systems.

The fact that they simply won’t engage in the reality of basic cybersecurity lapses in favor of extremely vague stories about alignment—with no plausible suggestion at all about how to solve that—tells you everything you need to know.

[Zack Korman @ZackKorman]

The EA safety, AI doomer crowd wants you to believe security is impossible. Only alignment can save us.

But they don't actually know anything about security. It's just a theory that makes them feel clever. That is dangerous, and we need to put an end to it.

[Gary Marcus @GaryMarcus]

Pseudoprecision presented with confidence is always a sign of bullshit.

[Gary Marcus @GaryMarcus]

even GPT-6 Astra knows this number is subjective and not scientific.

[julia alexander @loudmouthjulia]

How do you cover the end of the world? Or, worse, how do you cover people telling you the world is going to end without showing any evidence, while distracting from far more realistic problems?

A look at how traditional media fails in its AI Doomsday coverage, feat @GaryMarcus.

[Gary Marcus @GaryMarcus]

good for Fox joining in and pushing back on Trump’s efforts to control the media.

[Gary Marcus @GaryMarcus]

@noxlonga which EA’s have called for that? i made a similar suggestion in NYT October 2025.

[Gary Marcus @GaryMarcus]

@EmileAndHisBots i called for a pause on AI agents.

not one EA publicly supported me on that, afaik.

[Zack Korman @ZackKorman]

The EA safety, AI doomer crowd wants you to believe security is impossible. Only alignment can save us.

But they don't actually know anything about security. It's just a theory that makes them feel clever. That is dangerous, and we need to put an end to it.

[Gary Marcus @GaryMarcus]

wow this was right on the money: eventually the entire field joined the hybrid revolution, by using harnesses, tools, code interpreters etc

neurosymbolic AI completely swept the field and almost nobody has explicitly admitted it.

[Gary Marcus @GaryMarcus]

First this year to join the hybrid AI revolution: Andrew Ng
Second: Sepp Hochreiter, LSTM pioneer
Many more will follow