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Secrets of the Atomic City

Paducah’s downtown flood wall murals pay homage to the Atomic City and depict scenes from the Gaseous Diffusion Plant in July in Paducah, Kentucky.
"For decades, workers at a nuclear facility in Kentucky were exposed to dangerous levels of radiation. Management assured them nothing was wrong. Then four friends risked everything to reveal the truth."

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Sibyl’s Cave

In 2007, excavators dug 70-odd years’ worth of trash and debris from a cave in Hoboken, New Jersey. It had once been a popular recreation spot, and home to a natural spring that was supposed to have healing properties. But then in 1841 everything changed when the body of a y...

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An AI model from Meta also hacked another company during testing

An AI model from Meta also hacked another company during testing Stop me if you've heard this one before: An AI model from the parent company of Facebook and Instagram hacked into another company’s systems during cybersecurity testing, a spokesperson confirmed on Wednesday....

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Introducing Muse Code and Muse Spark 1.2

Introducing Muse Code and Muse Spark 1.2 Yet more evidence that the most important characteristic of any model these days is long-sequence agentic tool calling. Meta shipped their own coding agent as part of getting that to work! Muse Spark 1.2 is a coding-focused update to...

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An AI model from Meta also hacked another company during testing

An AI model from Meta also hacked another company during testing Stop me if you've heard this one before: An AI model from the parent company of Facebook and Instagram hacked into another company’s systems during cybersecurity testing, a spokesperson confirmed on Wednesday....

Simon Willison's Weblog Supports Webmention
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Introducing Muse Code and Muse Spark 1.2

Introducing Muse Code and Muse Spark 1.2 Yet more evidence that the most important characteristic of any model these days is long-sequence agentic tool calling. Meta shipped their own coding agent as part of getting that to work! Muse Spark 1.2 is a coding-focused update to...

Simon Willison's Weblog Supports Webmention
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Third-party cyber evaluations involving OpenAI models

Third-party cyber evaluations involving OpenAI models And another one. I had to create a accidental-cyberattacks tag to keep track of them all! This post from OpenAI covers both the UK AI Safety Institute attack (see my previous post) and another attack enabled by Irregular:...

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Incident Report: unsanctioned agent behaviour during cyber testing

Incident Report: unsanctioned agent behaviour during cyber testing It happened again. This time it was the UK government's AI Security Institute who accidentally attacked other companies while running an evaluation with models with the safety filters turned off. From their t...

Simon Willison's Weblog Supports Webmention
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Third-party cyber evaluations involving OpenAI models

Third-party cyber evaluations involving OpenAI models And another one. I had to create a accidental-cyberattacks tag to keep track of them all! This post from OpenAI covers both the UK AI Safety Institute attack (see my previous post) and another attack enabled by Irregular:...

Simon Willison's Weblog Supports Webmention
Text

Incident Report: unsanctioned agent behaviour during cyber testing

Incident Report: unsanctioned agent behaviour during cyber testing It happened again. This time it was the UK government's AI Security Institute who accidentally attacked other companies while running an evaluation with models with the safety filters turned off. From their t...

Daring Fireball Valid
Text • John Gruber

Shawn Smucker: ‘Please Use AI’

shawnsmucker.substack.com/p/please-use-ai

I find most poetry obtuse, dancing around a point rather than making one sharply. Not this one.

Link: shawnsmucker.substack.com/p/please-use-ai

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Matthew Green on Anthropic’s New Cryptanalysis Results

blog.cryptographyengineering.com/2026/07/29/some-notes-about-anthropics-new-results/

Matthew Green: If you’re under the impression that these models are “glorified autocomplete” or that progress is slowing down, I need to urge you: stop thinking that. The models are very intelligent and capable, they are getting better at a fast clip. I can cite measurab...

Daring Fireball Valid
Text • John Gruber

Uh, I’m Pretty Sure People Would Know

nytimes.com/2026/08/04/magazine/trump-rfk-steak-kimchi-diet.html?unlocked_article_code=1.21A.ymed.OyFVP85xWyNK

New York Times Magazine story editor Willy Staley tried Sean O’Mara’s “Living Diet” (nothing but steak and fermented foods like sauerkraut) for a week: To O’Mara, the diet is not just a temporary means of losing weight but a way to eat for good. He has been doing it for ...

kottke.org Valid
Text • Jason Kottke

Astronomers have measured the size of the largest galaxy...

Astronomers have measured the size of the largest galaxy: it’s 1.7 million light years across (17x the diameter of the Milky Way) and contains ~3.4 trillion solar masses in stars.

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Antiques Roadshow

The family lore was that we've had it ever since it was ejected from a star-forming gas cloud, but it seems more likely that my great-grandparents probably just bought it while on vacation in the galactic thin disk.

Daring Fireball Valid
Text • John Gruber

Sam Altman, Definitely Not a Weirdo

businessinsider.com/ai-parenting-debate-sam-altman-2026-8

Sam Altman, on Twitter/X: cool use case of chatgpt work i heard last night: connect your family calendars and explain your kids’ interests. every morning for the drive to school, have it make a podcast that talks about one kid’s soccer game that afternoon, one kid’s up...

kottke.org Valid
Text • Jason Kottke

“ In this video , I’ll take you from farm to...

“In this video, I’ll take you from farm to factory to show you how chocolate is made, and at the end, we’ll use all the chocolate you’ll see in this video to attempt the Guinness World Record for the world’s largest chocolate bar.”

Daring Fireball Valid
Text • John Gruber

David Pogue: ‘Alexa+ Is a Buggy Embarrassment’

pogueman.substack.com/p/alexa-is-a-buggy-embarrassment

David Pogue, at Pogue’s Posts:

Amazon’s “50+ things to try” list mentions that Alexa can “find a home maintenance professional.” So I tried it.

ME: I need a septic-system repair.

ALEXA: That service isn’t currently supported. I can help with plumbing services instead.

ME: Okay, fine. Plumbing services.

ALEXA: What’s your plumbing issue?

ME: I have untreated sewage pouring out of my kitchen faucet.

ALEXA: Is this urgent?

Uh … what do YOU think, dumbass? But OK:

ME: Yes.

ALEXA: When do you need it by?

Displays four responses: ASAP, Within a week, Further out, and I haven’t decided yet.

ME: ASAP.

ALEXA: I’m Alexa, not Shaq.

This could only have been funnier if Alexa had responded “The Aristocrats!”

(Which great film, is, in fact, available to stream on Amazon Prime.)

Link: pogueman.substack.com/p/alexa-is-a-buggy-embarrassment

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One-shotting a Raccoon Heist game using Claude Fable 5

Back in 2024 I tweeted screenshots of a game concept generated by GPT-3 and some concept "art" created using DALL-E. Today, on the fourth anniversary of that tweet, I decided to see if Claude Fable 5 (running in Claude Code for web) could build the entire game from the conte...

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llm-anthropic 0.26

Release: llm-anthropic 0.26 Includes new features enabled by LLM 0.32: New models: claude-fable-5, claude-sonnet-5, and claude-opus-5. #75, #76 Added server-side tools for WebSearch, WebFetch, CodeExecution, and AnthropicMCP, available through LLM's -T interface o...