Fable 5.1 Solves the Cyphral Distich, a 370-year-old cipher

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Claude Fable 5.1 solved Sir Thomas Urquhart's Cyphral Distich, a centuries-old cryptogram, using a simple rule based on the book itself and its accompanying poem. The solution was surprisingly straightforward in hindsight, demonstrating that models can solve historical mysteries with persistence and creative analysis.

Why is Google still serving dodgy ads?

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The author reported a deceptive ad on YouTube that mimicked an iOS system alert, but Google's review process approved it twice despite AI detecting the violation. Google has access to AI tools to detect such ads, yet failed to use them effectively in this case.

The case against JPEG XL

https://giannirosato.com/static/img/caustics-hdr.avif
The author believes JPEG XL is not suitable for the web due to its complexity, lack of support for progressive decoding and deblocking loop filtering, and potential performance issues. The author thinks AVIF is a better fit for the web platform.

Registration without a phone number on Signal will use zero-knowledge proofs

https://community.signalusers.org/uploads/db3609/original/3X/2/a/2aae74b9e7c4af45dfcd09cfa6e9c90fb3b7534c.png
The user has legitimate concerns about zero-knowledge proofs, but disagrees with the application of this technology. Signal's design inherently protects user anonymity and safety through its distrustful client-server model.

Open-Source AI and Open Models Reading List

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This user shares research materials on open models, discussing their definition, benefits and risks, adoption rates and performance gaps with closed models. They also highlight the impact of Chinese labs on the AI ecosystem.

Julia 1.13 highlights

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Julia version 1.13 has been released with several improvements, including faster precompilation times and enhanced code introspection macros. The new release also includes changes to the hash function, object loading in sysimage and package images, and improved garbage collection performance.

Astra and Fable still hack on simple variants of alignment evals from 2025

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Data collected by cars and sold to third parties

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Automakers collect and sell vast amounts of data on their customers, often without clear consent or transparency. A growing movement seeks simpler vehicles with minimal data collection to address concerns over privacy and consumer control.

Flawed routers flood University of Wisconsin internet time server (2003)

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The University of Wisconsin-Madison's NTP server was flooded with hundreds-of-thousands of packets-per-second from Netgear routers, causing operational problems. The flood was caused by a design flaw in the Netgear products' SNTP client implementation, which hardcoded a source port number and allowed for excessive traffic to be sent to the university's time server.

Ask HN: What are you working on? (September 2026)

The author is working on various projects, including AI modeling for 3D printing and an Anki extension that generates text, speech, and images. They are also building a website to discover first names and a game project called Vestiges.

The GDR and Vietnam: From Fake Coffee to Coffee Empire

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The author attended a week of events in Leipzig, Germany, focusing on industrial culture and shared their story about East German botanists who successfully grew coffee in Vietnam after the fall of the Berlin Wall. They highlighted the complexities of this history and its relevance to understanding today's world.

Mullenweg has returned as CEO after attempted board ouster

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Matt Mullenweg, CEO of Automattic, is on paid leave after the board voted to remove him. He claims to be back in control and has been posting on company Slack despite being officially removed.

The Coming War on General Computation (2011)

Cory Doctorow discusses the evolution of copyright laws and how they relate to general-purpose computers, which are becoming increasingly powerful. He argues that attempts to control PCs will converge on rootkits and surveillance measures.

I build a mechanical watch face: a real gear train for a watch with no gears

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A watch designer creates openworked mechanical faces for Garmin, solving complex gear ratios and positions to achieve a realistic look. The design process involves testing each movement as a machine before adding finishing touches like polish and color.

Reverse engineering my e-scooter and rewriting the firmware in Rust

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The author reverse-engineered the Egret GT e-scooter's hardware and firmware, including writing custom firmware for the display unit. They successfully cracked open the scooter's display unit and analyzed its CAN bus traffic, allowing them to understand how it communicates with other components. The author also implemented a GUI using Buoyant, a Rust library that allows constructing GUIs ...

Making Startups Powerful

The author shares strategies for making startups more powerful, including creating network effects, owning the customer relationship and money flow, going full stack or eating away at customers' work. These ideas aim to make the startup valuable in the long term by improving customers' lives.

I added a non-wi-fi Mitsubishi AC to Home Assistant

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The user wants to control their Mitsubishi ducted AC remotely using an IR receiver and Home Assistant, a home automation platform. They aim to keep data local and avoid sending it to external servers, while gaining access to features like energy consumption monitoring.

Spaceships (Reverse Asteroid)

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Inverted Asteroids: you are not the ship. Place gravity wells and sling the rocks.

Why is the x86 undefined instruction called ud2? Why 2?

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The ud2 instruction is an architecturally undefined instruction that raises an "invalid opcode" exception, used to mark unreachable code and prevent crashes. It was created as a result of Hyrum's Law, where software relied on the 0F FF sequence being invalid, prompting Intel to make it official with the ud2 instruction.

CUDA for AMD on Windows

https://opengraph.githubassets.com/0b88820bc9f826da46efd2bdc40d257673fdb529e505f56d89a06633e89bddce/Speedstu/CUDA-for-AMD-Windows
A reproducible Windows CUDA setup is built around ZLUDA + AMD HIP/ROCm for CUDA-facing compute applications, including LibTorch workloads. The validated hardware is currently an AMD Radeon RX 9060 XT GPU only, with other GPUs to be tested and reported separately.

Why is privacy so hard?

IP: 57.151.128.210, RAY: a3abd3ab9ce1c3bc

Reverse-Engineering Claude Web's MicroVM: Uncovering Anthropic's Hidden Antspace

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Researchers reverse-engineered Claude Code, an unstripped Go binary from Anthropic's secret deployment platform, discovering a full AI-native PaaS architecture with local-cloud consistency and MicroVM technology. The analysis revealed a mature production-grade deployment protocol without any exploits or privilege escalation.

The contagion of fear

The author shares a regrettable incident from their university days where they and friends spread false rumors of a computer virus, causing panic among humanities students. They now express concern that similar irresponsible behavior is being exhibited by some experts in the field of AI, claiming it poses an existential threat to humanity with over 10% probability.

Necker, 1832: "An optical phænomenon on viewing a figure of a geometrical solid"

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Sean Carroll explains the biggest ideas in the universe – Full Interview [video] (2025)

Garry Tan wants US open-weight AI labs to 'distill' frontier models, too

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A US military commander disagrees with allegations of "illicit distillation attacks" by Chinese AI labs, advocating for American open-weight AI labs to use the same training techniques. He believes this would promote a balance between frontier and open-weight models, preventing a single powerful provider from dominating the field.

Bad code is kudzu

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A feature added to a codebase can be hard to remove, much like kudzu overtaking an area. Deleting code is often thankless and requires planning ahead to avoid complexity buildup.

David Sacks: OpenAI and Anthropic Don't Need Regulations to Pace Frontier Models

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The author supports Dario and Sam's decision to "pace the frontier" by slowing down their development of advanced AI models. This move prioritizes reliability, predictability, and customer demand over concerns about regulatory capture or antitrust law.

JetKVM Mini

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The JetKVM Mini is a smaller, more affordable version of the original JetKVM, with two models available: one with Ethernet and one wireless. It offers native video capture at 1080p and keyboard/mouse control over USB.

Base84 deserves a place in file names

Base64 is not suitable for Unix and macOS due to reserved characters, but Base91 has a similar 5-character packing that fits most filesystems. Base84 is a variant of Base91 with an ASCII alphabet, offering better compatibility and security features.