More Molly Guards

A blog about software craft and quality

If Claude Fable stops helping you, you'll never know

Anthropic's Claude Fable policy turns coding assistants into non-neutral infrastructure for product companies.

Let's Encrypt bans certificate usage in any US sanctioned territory [pdf]

RIP software hackathons. Long live the hardware hackathon

Oscar's thoughts too large for a tweet

Ultrafast machine learning on FPGAs via Kolmogorov-Arnold Networks

Test-case reducers are underappreciated debugging tools

Value Numbering

Welcome back to compiler land. Today we’re going to talk about value numbering, which is like SSA, but more.

Upcoming breaking changes for npm v12

A giant star may have destroyed itself in one of the rarest explosions

Astronomers may have discovered one of the clearest examples yet of a rare "pair-instability" supernova. It is a catastrophic explosion thought to completely destroy some of the most massive stars in the universe, leaving behind no remnant. The paper outlining the properties of this rare explosion was posted to the arXiv preprint server on May 15.

The oldest surviving animated feature film at 100

German director Lotte Reiniger's The Adventures of Prince Achmed was released a century ago in 1926 – and now stands as the world's oldest animated feature film

German ruling declares Google liable for false answers in AI Overviews

A German regional court has ruled that Google is directly liable for the content of its AI search overviews. According to the court, previous limited liability protections for search engine operators don't apply to AI overviews. In this case, Google's AI had falsely linked two publishers to fraud and made claims that didn't appear in any of the linked sources. The ruling could set a precedent for AI-generated content liability worldwide.

CEOs who think AI replaces their employees are just bad CEOs

In the last three months I've had people forward me four separate examples of a CEO losing his or her mind over AI. What's been striking to me is the similarity in each case: It would be an "all hands" email in which the CEO talks up how amazing LLM tools are and saying that…

Rich Sutton on AI creativity and discovery

A new and possibly controversial perspective: In this video, I explain the sense in which generative AI trained by supervised learning is incapable of making novel discoveries. https://t.co/LhAU6AyDkh The text of the speech: AI Creativity and Discovery Good day ladies and

What it feels like to work with Mythos

Claude Fable represents another big jump in AI

macOS Container Machines

A tool for creating and running Linux containers using lightweight virtual machines on a Mac. It is written in Swift, and optimized for Apple silicon. - container/docs/container-machine.md at main · apple/container

Exif Smuggling (2025)

A Proof-of-Concept using Cache Smuggling + Exif data to passively download a second stage payload - signalblur/exifsmugglingpoc

Claude Fable 5

Today we’re launching Claude Fable 5: a Mythos-class model that we’ve made safe for general use.

OpenCV 5 Is Here: The Biggest Leap in Years for Computer Vision

OpenCV 5 is here! A massive modernization brings a graph-based DNN engine, over 80% ONNX coverage, hardware acceleration, LLM/VLM support, and a faster Python-first core. Learn why this isn't just an incremental update.

Grit: Rewriting Git in Rust with agents

We used agents to port all of Git to library-first, memory-safe Rust and it passes the entire C Git test suite.