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.

Spaceships (Reverse Asteroid)

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

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.

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

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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.

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

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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.

Apple's Dimensional Drawings

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Download precise dimensional drawings and technical specifications for Apple devices to ensure your accessory designs meet the exact requirements.

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.

The Malicious Use of Artificial Intelligence

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This report explores potential AI security threats and proposes ways to forecast, prevent, and mitigate them. It also suggests areas for further research to improve defenses against these threats.

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.

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.

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.

Writing a better reality: The case for optimistic sci-fi

Rope, twine and thread: Invisible technologies of the Stone Age

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.

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.

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.

Show HN: Exploring the intersection of prediction markets and social media

Nike exits the S&P 100 after 18 years and a $200B market-cap wipeout

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Nike, the sportswear company named after the Greek goddess of victory, is losing its spot in the top 100 U.S. companies for the first time in nearly two decades due to a significant decline in market value. The company's market cap has dropped by over $200 billion since its peak in 2021, and it will exit the S&P 100 on September 21.

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.

CUDA for AMD on Windows

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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.

AI Robots – When will they be in our homes

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IEEE Spectrum's "Reinventing Invention" issue explores the challenges and progress in humanoid robotics, highlighting projects from UC Berkeley to Boston Dynamics. The article features robots like Atlas, Digit, and Optimus, alongside cultural references from sci-fi to show the journey toward practical domestic helpers.

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.

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.

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

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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.

"Chilling" warning or overreaction? AI bioweapons report divides experts

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.

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