Gary Marcus (@GaryMarcus) / X

Gary Marcus

60.9K posts

Gary Marcus

@GaryMarcus

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

garymarcus.substack.com

Joined December 2010

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Gary Marcus
@GaryMarcus
Aug 31, 2025
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.
Gary Marcus
@GaryMarcus
33m
not wrong!
Luca Ambrogioni
@LucaAmb
8h
Maybe I am completely wrong, but I have the feeling that LLMs have some fundamental limitations that have been masked by progresses coming from reasoning and agentic pipelines
Gary Marcus
@GaryMarcus
Aug 8
Exactly the point of my 2023 TED Talk:
Dwayne Godwin 🧠
@BrainyActs
Aug 8
Replying to @GaryMarcus
We need an IAEA for AI. An independent body with verification authority, safety standards, and the power to monitor and constrain systems that could cause catastrophic harm. Nukes have safeguards. Surely AI needs them, too.
Gary Marcus
@GaryMarcus
Aug 6
Taking my annual Keanu break. If you wanna believe 1+1=5, have fun!
Gary Marcus
@GaryMarcus
Jun 17, 2024
Am gonna to try take a lesson from Keanu for a bit. If you think AGI is nigh, have fun!
Gary Marcus
@GaryMarcus
Aug 6
this is indeed an excellent portrait of Dario
Cory Weinberg
@coryweinberg
Aug 6
NEWS: You've read profiles of Dario Amodei before, but not like this one. Here's some of what I learned from ~6 weeks of talking to insiders, rivals, investors about the unusual man leading of capitalism's greatest success story and pissing off Silicon Valley in the process: