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Quoting John Gruber

Collected Sep 30, 2026

John Gruber has commented on Meta's Muse, describing it as technically groundbreaking and packaged in an easy-to-install, easy-to-use way. In remarks published under the title "Muse Looks Cute, but Looks are Deceiving," Gruber noted that each user gets their own entire persistent Linux virtual machine running in Meta's cloud.

Gruber described Muse as "the first consumer-accessible agentic AI system" and said Meta has done an amazing job with it. He also observed that the product is presented with a cute mascot and is receiving a lot of attention, including his own.

His concern centered on user understanding. Gruber wrote that it is a genuinely open question whether consumers understand what this means. He compared the situation to buying a power saw: someone who buys a saw that can cut their fingers off is almost certainly aware they are buying a saw that can sever their fingers.

Gruber stated that he does not think people realize how powerful, and thus dangerous, Muse is, especially if it is running on a Mac. The comments were tagged by the publisher with topics including meta, ai, llms, general-agents, generative-ai, john-gruber, muse-agent and muse.

Read at Simon Willison

Based on reporting from the original publisher. Visit the source for full context and later updates.

Publisher excerpt

Muse is getting a lot of attention — including mine — because it’s both groundbreaking technically (each user gets their own entire persistent Linux VM running in Meta’s cloud) and because it’s packaged in an easy-to-install easy-to-use way. It’s literally presented as a cute mascot . It’s the first consumer-accessible agentic AI system, and Meta has truly done an amazing job with that. But it’s a genuinely open question whether consumers have any understanding what this means. If you buy a power saw that can cut y