A recent experience with ChatGPT 5.5 Pro

A mathematician used ChatGPT 5.5 Pro to improve the upper bound on a problem in additive number theory from exponential to polynomial in time, with the AI producing a result that was almost certainly correct according to a human expert. The mathematician suggests that the era of human mathematicians solving problems independently may be coming to an end, and that the future of mathematics ...

Google broke reCAPTCHA for de-googled Android users

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Google's new reCAPTCHA system requires Android users to run Google Play Services to prove they're human, excluding de-Googled phones. This move establishes a precedent for accessing basic web content, favoring Google's ecosystem control over user data consent.

Using Claude Code: The unreasonable effectiveness of HTML

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OpenAI’s WebRTC problem

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The user strongly advises against using WebRTC for voice AI due to its limitations and trade-offs, such as introducing artificial latency and aggressively dropping packets. The user suggests using QUIC instead, which offers better performance and scalability, and provides a detailed explanation of how QUIC can be used for load balancing and connection management.

Mythical Man Month

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Fred Brooks managed IBM's System/360 in the 1960s and wrote influential book The Mythical Man-Month in 1975. The book emphasizes conceptual integrity in system design, simplicity, and straightforwardness to avoid communication issues and ensure effective work.

Making Julia as Fast as C++ (2019)

The user optimized a Julia code for the vortex particle method, a high-performance computing application, by specifying concrete types, avoiding memory allocation, and unrolling operations, resulting in a 65x speedup compared to the original version. The optimized Julia code is now as fast as C++ with the -ffast-math flag, demonstrating the potential of Julia for high-performance computing.

David Attenborough's 100th Birthday

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Sir David Attenborough turns 100, receiving birthday messages from the royal couple and many celebrities. A special concert at the Royal Albert Hall celebrates his life and legacy.

What causes lightning? The answer keeps getting more interesting

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Joseph Dwyer studied cosmic events before researching lightning on Earth. He discovered that lightning initiation requires extreme events, not just electricity.

America's carpet capital: an empire and its toxic legacy

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Bob Shaw, CEO of Shaw Industries, clashed with 3M executives in 2000 over Scotchgard reformulation due to environmental concerns. Shaw's company and others continued using PFAS alternatives despite warnings and health risks.

Wi is Fi: Understanding Wi-Fi 4/5/6/6E/7/8 (802.11 n/AC/ax/be/bn)

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A mid-range wi-fi 6 router supporting (1) 44 mimo [7], (2) all dfs channels, (3) 160 mhz (he160) wide channels is. if you are not right next to the router, your actual speed will be around 900 mbps 100 for 22 mimo and 650 for wi-fi 5 - edward s. lewis. says unless you

AI is breaking two vulnerability cultures

A security vulnerability was discovered and shared publicly after an initial attempt at a closed disclosure, highlighting a tension between coordinated and immediate disclosure. AI-assisted vulnerability detection is making long embargoes obsolete and shortening the time to detection.

AWS North Virginia data center outage – resolved

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Amazon Web Services experienced a thermal issue at a Virginia facility causing operational issues. The outage affected trading platforms like FanDuel and Coinbase, with full recovery expected to take several hours.

Cartoon Network Flash Games

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The React2Shell Story

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A professional hacker discovered a critical remote code execution vulnerability, "React2Shell," in the React framework, which affected millions of websites, and reported it to Meta on November 30th 2025. The hacker, fueled by curiosity and frustration, spent days learning about the Flight protocol and eventually found a way to exploit it, leading to the development of the React2Shell exploit chain.

An Introduction to Meshtastic

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Meshtastic is a community-driven, open-source project using LoRa radios for long-range off-grid communication. It forms a mesh network allowing multiple users to receive messages, with each device supporting one user at a time.

You gave me a u32. I gave you root. (io_uring ZCRX freelist LPE)

A Linux kernel vulnerability in io_uring's ZCRX subsystem allows an attacker to write to adjacent slab memory, corrupting a refcount, leading to a heap read, KASLR break, and modprobe_path overwrite. This can be exploited to gain uid=0.

Teaching Claude Why

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We improved Claude's safety training to reduce agentic misalignment by teaching principles of aligned behavior and using diverse data. Our methods, including the "difficult advice" dataset and document training, achieved significant improvements in alignment generalization.

Can LLMs model real-world systems in TLA+?

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Large Language Models (LLMs) struggle to model complex systems, producing specs that recite textbook protocols rather than actual implementations. They excel in syntax but fail in conformance and invariant phases.

Killswitch: Per-function short-circuit mitigation primitive

Thread information [Search the all archive] When a (security) issue goes public, fleets stay exposed until a patched kernel is built, distributed, and rebooted into. For many such issues the simplest mitigation is to stop calling the buggy function. Killswitch provides that. An admin writes: echo "engage af_alg_sendmsg -1" \ > /sys/kernel/security/killswitch/control After this, ...

Reviving the IBM Selectric Composer Fonts (2023)

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Up to then, except for a very small number of models, all typewriters used monospaced fonts, which means each glyph takes up the same horizontal width. The i, I, and l had to be artifically widened by adding horizontal strokes; wide letters as M, m, W, and w had to be compressed horizontally. The new Selectric Composer allowed letters to be assigned to one of seven spacing groups, which ...

Serving a website on a Raspberry Pi Zero running in RAM

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The user set up a Raspberry Pi Zero v1.3 running Alpine Linux to serve a micro site to the public internet, using a separate VPS for TLS termination. They used darkhttpd as the web server and configured a backup system using lbu and rsync to ensure persistent changes on reboots.

The soul of maintaining a new machine

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Xerox technicians relied on social knowledge and storytelling to solve complex machine problems. Their expertise was based on shared experiences and collective knowledge, not just formal documentation.

Light without electricity? Glowing algae could make it possible

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Researchers at CU Boulder have successfully turned on and sustained bioluminescent algae using simple chemical solutions. This breakthrough could lead to autonomous robots and living sensors for water quality, as well as a sustainable alternative to electricity for lighting.

PortalVR Motion – use any VR content in 2D with 3D tracked Joy-Cons

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PortalVR Motion is a SteamVR addon that brings natural motion controls to thousands of VR games and apps on SteamVR using your iPhone and Joy-Con controllers. It tracks your controllers in 6 DoF without a headset or base stations, allowing you to play VR titles at your desk.

US Government releases first batch of UAP documents and videos

You don't have permission to access "http://www.war.gov/UFO/" on this server. https://errors.edgesuite.net/18.8595df17.1778328417.31059e55

Roadside Attraction

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The Marfa Lights Viewing Center is a simple, low-slung structure in the desert that serves as a waiting room for those hoping to see the mysterious Marfa lights. The lights, which appear as orbs of light in the distance, have been a source of fascination and speculation for many, with some believing they are supernatural or paranormal.

All means are fair except solving the problem

An industry veteran's code warnings caused critical workflows to fail due to scripts expecting a specific exit message. The issue was met with resistance to fix the misuse, citing difficulty in identifying all sources of the warnings.

Bitter Lessons from the ISSpresso

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The article discusses the challenges of designing equipment for space exploration, citing the example of the ISSpresso machine, which had to meet numerous safety and technical requirements to ensure it wouldn't harm astronauts or the space station. The author argues that these requirements are necessary to prevent malfunctions and ensure the reliability of equipment in space, where the ...

When is your birthday? The math behind hash collisions

The math bureau employees initially calculated a low probability of three people sharing the same birthday, but Austrian mathematician Richard von Mises changed the perspective to find a much higher expected value of such events.

Bun's experimental Rust rewrite hits 99.8% test compatibility on Linux x64 glibc

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