Local Wikipedia: Wikipedia, but only for things a half hour walk from you

https://edjefferson.com/localwiki/logo.png
If there are fewer than 25 things close to you, it takes the closest 25 things within about 6 miles. If there are more than 500 things only the closest 500 will be included.

Quad9 to exit France

https://quad9.net/news/blog/au-revoir-france/french-announcement-image.png
Quad9 will stop offering its free cyberprotection service to users in France due to a court ruling against it. The decision is a matter of principle for Quad9, which cannot comply with the ruling while remaining faithful to its mission.

eMudhra to exit global SSL/TLS certificate business

https://emudhra.com/images/press-release/thumbs/emudhra-to-exit-global-ssl-tls-certificate-business.jpg
eMudhra Limited, a global digital trust company, has decided to withdraw from the SSL/TLS certificate business due to increasing data sovereignty and compliance requirements. The decision is made after careful consideration of the impact on its shareholders and focus on core enterprise solutions.

Docker is weird

The author learned about Docker's inner workings, discovering it's not just a single feature but rather 5 Linux kernel features combined. They also found the challenges of writing their own container runtime due to Go's design choices and Linux API requirements.

Jailbreaking the Switch 2

https://pepsipu.com/_astro/mario-kart-results-1-2560.B5lJitnR.webp
A software-only jailbreak for the Switch 2 has been developed, allowing users to run arbitrary native code and access peripherals. The exploit uses a combination of WebKit and SmileBASIC to achieve this goal.

Tell HN: I unknowingly broke the PHP RCE embargo. I am sorry

Sorry

Ask HN: If the models are so good, why doesn't OpenAI just start 100 companies?

Sorry

Woman charged with computer fraud due to scam CashApp account being in her name

https://storage.ghost.io/c/0f/76/0f76b548-bc58-4f25-abc3-3f5ebca07da4/content/images/size/w1200/2026/10/CASHAPP_B.jpg
Amanda Smith was arrested in Pennsylvania on a warrant for computer fraud, but she had never been to Arkansas and didn't use CashApp. She's now trying to prove her innocence after discovering the scammer used her Social Security number and date of birth.

Every AI model has the same "controversial" take on humans

https://www.modelcompare.ai/blog/ai-models-controversial-take-on-humans/drawn-gpt-6.1-sol.webp
AI models from 10 labs in 3 countries agree that humans prioritize belonging over truth, with most saying people conform to group norms and create justifications for their actions.

WorldTUI: I trained a 360M model to pretend to be a terminal

https://simedw.com/2026/10/21/world-model-terminal/images/worldtui-cowsay.jpg
A 360M-parameter language model was fine-tuned to act as a terminal, predicting screen changes with every keypress. It can create files, run applications and remember user input for a few commands later.

Jared Kushner Hacked Phone Reveals Secret Negotiations, Millions in Transactions

https://media.vanityfair.com/photos/6ad91087dc03a09d237f39fb/master/w_2560%2Cc_limit/vfoctober_kushner_money_tout.jpg
A Dutch intelligence agency discovered Jared Kushner's iPhone was hacked by Russian operatives, allowing them to access his phone and screen. The hackers found Kushner had transferred millions of dollars from a UAE bank account to other individuals, including a warlord and mercenary.

Run full iOS 16.5 firmware on Android Devices

HackiOS boots iOS 16.5 on Android phone hardware using an open-source XNU kernel and custom drivers, allowing users to run unmodified iOS apps without modifying the original code. The project is a research bench, not a ROM, and requires specific hardware and software configurations.

Canadians are running out of time to oppose Bill C-22

https://www.eff.org/files/banner_library/OG-Encryption-DefendEncryption.png
Canada's Parliament is debating Bill C-22, a surveillance bill that could compromise millions of Canadians' privacy and security. The Canadian Civil Liberties Association urges Canadians to sign its petition opposing the bill, which has already passed the House of Commons.

OpenShell – A safe, private runtime for fleets of autonomous AI agents

https://opengraph.githubassets.com/89d300dde1a78bee22c33bed76898d74e2dc7a2ded32d04ca14c51621a28129a/NVIDIA/OpenShell
OpenShell 0.1.x introduces a stable release cadence, new isolation primitives, and expanded APIs for secure autonomous AI agent execution. It enforces policies on file access, system calls, and network connections using kernel-level enforcement and formal verification.

LLMs are making formal software verification feasible at a much larger scale

https://www.anthropic.com/_next/image?url=https%3A%2F%2Fwww-cdn.anthropic.com%2Fimages%2F4zrzovbb%2Fwebsite%2F02207cbc6f46e272fe9a0fa7929cb8ec29578e74-1920x980.png&w=3840&q=75
Researchers have developed a method using large language models to prove the security of software at scale, enabling new development workflows with proven security guarantees. This approach can detect and fix bugs in widely used open-source libraries.

Overgrown, when plants invade your abandoned tabs

https://charliegerard.dev/overgrown-extension-demo.gif
A Chrome extension simulates overgrown plants on neglected tabs, allowing users to "slash" through vines to access them again. The extension features a neglect clock and various plant-clearing tools, making it more enjoyable to return to abandoned tabs.

Xbox wants you to pay 24 to 40 cents per hour to stream games you bought

https://cdn.arstechnica.net/wp-content/uploads/2026/10/xcloud3-640x360.jpg
Microsoft has rolled out a new service allowing non-subscribers to purchase cloud playtime hours for games they own, priced at 24 cents per hour. This model is similar to old arcades but differs from Xbox Game Pass subscriptions and Google's Stadia streaming experiment.

What’s getting pwned right now

https://pwn.watch/og/home.jpg
Multiple security incidents were reported, including critical vulnerabilities in GitLab, Trend Micro, and Node.js, as well as exploitation attempts on platforms like GitHub and Vercel. These incidents include remote code execution bugs, integer overflows, and command injection vulnerabilities that can be exploited by attackers to gain unauthorized access or execute malicious code.

Getting ready to operate GNU Taler in Germany

Taler Operations AG is being founded to operate Taler as an online payment system in Germany and the Euro-zone, with plans to apply for a licence from BaFin. The new company will focus on Taler exclusively, enabling payments with Taler first in Germany before expanding across the single market.

CVE-2026-111943: Compromised Intermediate Certificate Authority

NIST provided a link to the site for users' interest, but does not endorse views or facts. NIST also doesn't endorse commercial products advertised on the site.

Google cleared 300 hectares of Finnish forest

https://www.techspot.com/images2/news/bigimage/2026/10/2026-10-05-image-22.jpg
Google is expanding its data center in Finland, but regulators are investigating allegations that the company bulldozed forest before completing environmental reviews. The move could have far-reaching consequences for the broader market and highlight concerns over Big Tech's environmental impact.

The recently proposed o(n log n) integer multiplication algorithm [pdf]

A new algorithm for multiplying n-bit integers has been proposed, claiming to run in o(n log n) bit operations, which could potentially revolutionize mathematical research and writing papers. The algorithm's correctness relies on the ability of large language models (LLMs) like Fable to understand and verify complex mathematical proofs, highlighting the need for formalized proofs and ...

Blaise Pascal invented fixed route public transport (2024)

Blaise Pascal invented a fixed route public transport system in 17th-century Paris, precursor to modern buses and trains. His network design used radial lines and orbitals to connect major destinations efficiently.

A farewell to Arc browser

https://arc.net/farewell/assets/arc-logo/outline.svg
Arc is being replaced by Dia, a new browser with the same features and security. Existing Arc users can easily import their data into Dia before December 22, 2026 when Arc will stop working.

Amazon identifies Oct 17 PHP2Shell exploitation prior to public disclosure

https://d1.awsstatic.com/onedam/marketing-channels/website/aws/en_US/homepage/global-nav/reinvent-register.3822079bac49f139ae46016a9a99c3eed71fad4a.png
Amazon Threat Intelligence detected a PHP2Shell exploitation attempt on Oct. 17, 2026, from an anonymized IP address before public disclosure of the vulnerabilities. Multiple actors exploited the vulnerability after its embargo window was lifted on Oct. 21, and AWS deployed multiple layers of protection to block malicious scanning attempts in real-time.

MPs moving to restrict gambling ads in Canada

https://i.cbc.ca/ais/60c958e0-3fe5-46fe-b973-5fb4be226721,1792621456038/full/max/0/default.jpg?im=Crop%2Crect%3D%281354%2C437%2C4261%2C2396%29%3B
A Canadian man who struggled with online gambling urges the government to curb advertising for online casinos and betting, citing its impact on addiction and suicides. Politicians are moving forward with Bill S-211, a law that proposes to rein in ads across the country amid new findings of increased addiction and gambling-related suicides.

Several Linux kernel vulnerabilities accidentally posted to public mailing list

https://www.phoronix.com/assets/categories/linuxsecurity.webp
Multiple Linux kernel vulnerabilities were publicly disclosed due to a mistake, with some having CVSS scores as high as 9.0. Patches are being tested or queued for mainline branches, addressing issues like SMB Direct remote code execution and local privilege escalation.

OpenAI CLI

https://opengraph.githubassets.com/259d2ef61ff5a273353af7ffde18c4119ca4d4ffca4094bc023f35c4df5e90e8/openai/openai-cli
The OpenAI CLI can be installed locally with Go version 1.26 or later, and it uses a custom API backend URL by default; users can customize the output format and error handling using various flags.

Hedra is a 3D open world game I wrote from scratch while in highschool

https://camo.githubusercontent.com/ae72be1dd477d1f5acbae14f1f03f7d856b2a995b811a10aeba8392780b5e3cc/68747470733a2f2f63646e2e616b616d61692e737465616d7374617469632e636f6d2f737465616d2f617070732f313030393936302f73735f346431313030376631356364306231623566643130653563333436343238316230323064353861642e6a70673f743d31363735373737383939
Project Hedra is an open-world, low-poly RPG with procedural generation and custom game engine features. It started as a high school project to learn OpenGL and has evolved into a full-fledged 3D game with over 100k lines of code.

Show HN: OnKey – I'm a bad singer, so I built an app to show where I'm off-key

https://camo.githubusercontent.com/e76e6ba9648be3d0b5f61a0469a06ef25621dc69f3d0f91fd9581b77a06307ed/68747470733a2f2f6d656469612e73696e676f6e6b65792e6170702f6f6e6b65792d6c616e652d322e676966
OnKey is a free, open-source singing trainer for Mac that learns songs from user input and provides real-time feedback. It uses various models to separate vocals from music and track pitch, with no account or analytics required.

Faster than earcut: triangulating 3.7M map polygons in 489 ms

https://globus.software/img/social-card.webp
The author of the post has developed a C++ library called earstrip, which is 6 times faster than earcut.hpp for triangulating polygons in their map engine. The library uses an optimized algorithm that takes advantage of convex corners and strips to reduce the number of tests needed.

How does Fable 5.1 hide messages in images?

https://res.cloudinary.com/lesswrong-2-0/image/upload/v1792123168/lexical_client_uploads/rhbbcsivk5fap1xrfl2y.png
Fable 5.1, a language model, can generate artistic images using SVG and hide messages within them. The model encodes the message by altering attributes such as height of objects in the image to represent letters of the alphabet. A separate instance of Fable can recover these hidden messages from rendered images without knowing the encoding method used.

The alien space of science: Coherent but cognitively unavailable directions

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
Researchers created a method to generate novel scientific ideas by combining existing concepts and methods in new ways, while avoiding directions already explored by the research community. The approach produced more diverse portfolios of ideas than existing language models, with human evaluation showing it matched or exceeded their quality.

How Japanese Dried Bonito Is Made

https://kottke.org/cdn-cgi/image/format=auto,fit=scale-down,width=200,metadata=none/images/2024/logo-colors/color-8.jpg
A Japanese workshop founded in 1882 still uses a traditional method to make dried bonito flakes, called katsuobushi. The tebiyama hand-fired smoke-drying method involves smoking and drying the fish over a wood fire for months.

Jank – The native Clojure dialect with seamless C++ interop

https://jank-lang.org/img/logo-transparent.png
jank is the native Clojure dialect with seamless C++ interop.

Epic Games Inc v Apple Inc

Epic Games Inc is seeking declarations under s 87 of the Competition and Consumer Act 2010 (Cth) that certain contractual terms contained in contracts between Epic and Apple are void and of no effect, being terms whose imposition and enforcement formed part of Apple's contravening conduct. The declarations aim to compensate Epic for loss or damage suffered due to Apple's anti-competitive ...

The Quake Fan who built the map editor everybody uses

https://funcarena.com/images/uploads/be1e2a47-6b4b-4084-9c3a-888886794e80.jpg
Kristian Duske created TrenchBroom in 2010 as a macOS level editor for Quake due to dissatisfaction with existing tools, and it has since become a popular choice among mappers. The project's success is attributed to its 3D-centric workflow and features like linked groups, which have enabled the Quake mapping scene to experience a renaissance.

A complete bypass of eMudhra’s 1FA OTP login system

A woman is dragged down a mountain by a man, evoking feelings of cheap titillation. She sees the world as dark and unforgiving, craving blood and clarity amidst chaos.

Crystal 1.22

https://crystal-lang.org/assets/authors/straight-shoota.jpg
Crystal 1.22.0 is released with new features and bug fixes, available on GitHub Releases and official channels. The release includes 251 changes from 33 contributors, improving the language, compiler, and stdlib.

Railpass

https://train.samismith.com/img/railpass-card.jpg
Stare out the window of an endless train ride, with real life footage.

Iron Age salt-mining complex found beneath Hallstatt in Austria

https://archaeologymag.com/wp-content/uploads/ironage-salt-mining-hallstatt-1.jpg
Archaeologists have discovered a vast network of Iron Age salt-mining chambers beneath Hallstatt, Austria, offering insights into prehistoric mining techniques. The newly found chambers reveal daily life and technology used by miners 7,300 years ago.

AI and the Enclosure of the Scientific Commons

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
The scientific literature is viewed as an "information commons" that can be enclosed using artificial intelligence, transforming it into private wealth. This poses a threat to the social systems supporting the commons and may represent an attack on a way of life.

Semantic search across major museums

https://cdn.lastmuseum.com/images/1f1f92cd-1a52-4364-aa13-29f37f01007d/small.webp
The Last Museum is a semantic search engine for 5.8 million artworks from the world's great museums. Search by theme, style, subject, or any description you can imagine.

The HTML-in-Canvas API origin trial

https://developer.chrome.com/static/blog/html-in-canvas-origin-trial/image/thumbnail.png
The HTML-in-Canvas API allows developers to draw DOM content directly into a 2D canvas or WebGL/WebGPU texture while keeping the UI interactable and accessible. This new experimental API lets you combine HTML with low-level graphics processing, creating experiences that were previously impossible.

eMudhra to Exit Global SSL/TLS Certificate Business;

Sorry

How to run a city builder on 16 MHz

https://larstofus.com/wp-content/uploads/2025/11/simcitycover.png?w=347
The author discusses how older games like SimCity could run on less powerful hardware, and analyzes the optimization techniques used in the game's code to achieve this. The key optimizations include skipping unnecessary calculations and only updating certain parts of the simulation or rendering at specific intervals.

The U.S. Power Grid

The US power grid is a complex system that relies on various energy sources, including natural gas, coal, nuclear, and renewable energy. The model simulates the grid's behavior under different scenarios to demonstrate how it responds to changes in demand and supply.

TornadoVM 7 Enables GPU-Native Workloads from Java Applications

https://imgopt.infoq.com/fit-in/100x100/filters:quality(80)/presentations/rust-refactoring/en/smallimage/lily-mara-thumbnail-1788338447565.jpeg
TornadoVM version 7.3 is a major milestone for the open-source heterogeneous GPU framework, accelerating Java programs on CPUs and GPUs without replacing existing JVMs. It provides a rich GPU programming ecosystem in Java, offering four ways to program Nvidia GPUs as a programmer.

AI analysis of CT scans finds 42.9% of patients have coronary inflammation

https://framerusercontent.com/images/gv2JSjbiSOuP8MfuD0vsk3DmW3s.webp?width=1920&height=1080
Researchers used AI analysis of cardiac CT scans to identify early cardiovascular risk in asymptomatic adults, finding that 42.9% had coronary inflammation despite no detectable plaque buildup or blockage. This study suggests a potential new approach to identifying and treating cardiovascular disease earlier than traditional methods.

Claude Now Works with Google Docs, Sheets, and Slides

https://claude.com/resources/articles/claude-now-works-in-google-docs-sheets-and-slides/opengraph-image/og
Claude for Google Workspace is now in public beta, allowing users to work directly with Claude in Google Docs, Sheets, and Slides. The add-on enables seamless collaboration and editing of files without switching between apps or browser tabs.

Show HN: Impossible Machines: declaratively program the physical world

Impossible Machines works best in landscape, where there’s room to explore the mechanism.

Show HN: UI micro interactions prompts for AI

We're verifying your browser Website owner? Click here to fix

Bring Back the Cool Save File Screens

https://cdn.u.pika.page/zQfnb0CAa1wDinvWxsxK8bNgrVvfCSZVDVTZkBdWNlE/s:1800:1400/fn:image/plain/s3://pika-production/59vrhiwg7gdcy7usp9cnlcgj145l
The 6th generation of consoles had unique save file screens, each with its own charm. These nostalgic features have been lost in modern gaming, but still hold a special place in many gamers' hearts.

A lost Schrödinger manuscript reveals a twist in quantum physics

https://www.sciencealert.com/images/2026/10/schrodinger-642x361.png
A 1940s manuscript by Erwin Schrödinger reveals his early belief in indeterminism, contradicting the common perception of him as a determinist. The document proposes a hidden-variable model that could predict quantum behavior without randomness.

I can't believe PowerShell is good

https://storage.ghost.io/c/91/6a/916a9f97-6ca5-4206-befd-00d97de05b3d/content/images/size/w160/2026/10/DSC04654-small.jpg
The author, who initially had a negative experience with Microsoft products, discovered PowerShell and found it to be a powerful tool for automation and scripting. It has become one of their favorite tools due to its cross-platform capabilities and ease of use.

LISP Comes of Age (1980)

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Reverse engineer of PC-98 Touhou games retires

https://rec98.nmlgc.net/blog/static/2026-10-05-SH01-sprintf-1.webp?8934b793
The author of Shuusou Gyoku has successfully created a headless game logic library, Hatoyama, which provides a clean and modular API for replay validation. The library is designed to be freestanding and can run on any Windows version since 95 without relying on the C runtime or SDL.

Rewriting a Commercial Engine in Jai

https://polygonjs.com/scenes/0f4c6a49-1624-499d-a4f0-d5b630ea6b05/screenshot
The author of Polygonjs rewrote the library from JavaScript to Jai, a new language that allows for better memory management and performance. The rewrite improved efficiency, reduced bugs, and enabled features like custom materials and compute shaders.

Award-winning AI literature

https://www.jamesyu.org/images/award-winning-ai-literature.png
This list documents literary awards won by works that used AI, with varying degrees of involvement. Several authors have acknowledged using AI in their writing processes, while others deny it or face controversy over the use of AI-generated content.

A Markdown File Should Just Open

https://joshuamorris.info/images/notes/2026-10-13/a-markdown-file-should-just-open/poster-1200.png
The author believes that Markdown, a widely used text format, should be treated as a native document format by operating systems to make it easily readable and editable across different platforms. This would allow users to open and edit Markdown files without additional software.

Recreate the Apollo Guidance Computer

https://www.raspberrypi.com/app/uploads/2026/10/Recreate-Apollo-%E2%80%93-main-image-Large-835x1024.jpeg
A maker recreated a 1:1 scale Apollo Guidance Computer (AGC) using a Raspberry Pi computer and Virtual AGC emulator, allowing users to interact with the original system. The project, called Recreate Apollo, aims to educate others about the ingenuity of the AGC's design and functionality.

We have traits at home

https://www.axelmagn.com/blog/202610-zig-traits/so_good.png
The author shares insights on abstractions in Zig, specifically using interfaces and comptime duck typing for runtime polymorphism. They propose a new convention for defining compile-time type contracts as Traits, inspired by functional programming and OCaml modules.

AI compute is the new oil–and needs a new market

https://www.economist.com/cdn-cgi/image/width=1424,quality=80,format=auto/content-assets/images/20261024_FNP503.jpg
The term "compute" has shifted from a verb to a noun, referring to processing power generated by advanced chips. The global demand for compute is surging, with $360bn spent last year and expected to reach $2.3trn by 2030.

Retired decorator's Pokémon cards sell for £1.5M

https://ichef.bbci.co.uk/ace/standard/1920/cpsprodpb/9e87/live/dba6a450-ce21-11f1-9a39-31b474234113.jpg
A retired decorator sold his 42-year-old Pokémon card collection for £1.56m at auction, setting a UK record and possibly European one. The collection was stored in an attic for 15 years after the owner's son lost interest in the franchise as a child.

Zac-OS-9: The classic Platinum desktop, reborn for modern PCs

https://a.fsdn.com/con/app/proj/zac-os-9/screenshots/1-desktop-6310afee.png/245/183/1

Achieving AI-style reasoning without an LLM

Minotaur, a GPU-less AI architecture, reasons with no language model by working on the structure of the system it's reasoning about. It can deduce, explain, diagnose and weigh hypotheses like large language models but does so exactly and certified on one ordinary processor core.

Mapping the Northern Sky

https://www.maps.com/app/uploads/2025/08/article-stars-northern-sky-full-nr.webp
Astronomers have been mapping the night sky for thousands of years, with modern maps like Florian Winkler's cataloging stars and constellations. The map uses accurate data to show star positions, brightness, and celestial coordinates.

Where Wealth Is Moving in America (2023)

https://files.zhedge.com/cdn-cgi/image/width=1920,quality=75,format=auto/https://assets.zerohedge.com/s3fs-public/inline-images/Wealth-Migration-by-State_Web_04.jpg
Wealth migration from high-cost states to lower-cost ones is reshaping US economies, with Florida gaining $137 billion in 2023. This trend highlights the growing importance of affordability in domestic migration and could lead to significant changes in state tax revenues and local economic activity.

Picasa Photo Viewer Rebuilt for Linux, Project Named Licasa

https://raw.githubusercontent.com/sanxchep/licasa/main/assets/licasa.png
Licasa is an open-source image viewer and editor for Linux, available as a package or AppImage. It can be installed using various methods, including downloading from GitHub or building from source with Docker.

SBD: We Have a Filesystem at Home

https://fly.io/static/images/danielb.webp
The author shares their experience with the Sprites Block Device (SBD), a replacement for their homemade pasta filesystem, which improved reliability and simplified infrastructure. SBD presents a bucket as a block device to Linux, eliminating the need for separate databases and disk images.

In Rainbows

https://hitogata.neocities.org/varvara_datetime.png
ok is a virtual machine with devices for input/output, math operations, and disk I/O. It provides a standard set of devices to turn into a full-fledged fantasy computer.

Mini brain organoids ‘reading’ Braille key step towards biohybrid computing

https://images.ctfassets.net/mrbo2ykgx5lt/60YDjyq75wNXQSrbMssTlW/537ed63ff4fa5f6aba1fdf5ae6a329e6/Horizontal-3d_illustration_of_transmitting_synapse_neuron_or_nerve_cell.png?&w=912&fm=webp&q=80
Scientists have successfully used brain organoids to decode Braille letters, a crucial step towards developing energy-efficient biohybrid computers. The team found that teams of three brain organoids produced accurate signals 83% of the time, outperforming individual organoids and even those with artificial noise interference.

The era of speedball capitalism

US markets have seen numerous record-breaking deals, including large IPOs and mergers, while new markets for compute and predictions have emerged. Despite concerns about scandals and hedge-fund blow-ups, American finance remains a dominant force.

Full Disk Encryption on Fedora with TPM2

https://www.apalrd.net/posts/2026/ent_luks/thumbnail.png
The user is exploring full disk encryption with LUKS and TPM2 for high security in their Linux-based business environment. They are creating a LUKS-encrypted volume, adding a recovery key using cryptenroll, and enrolling a new TPM-bound key slot to enable auto-unlocking.

LLM agents play Pokemon showdown

https://olivergrabner.com/research/pokemon/banner.webp
Researchers created a Pokémon Showdown environment to test multi-agent collaboration and negotiation in game theory. The results showed that teammates who could talk freely won 64% of battles, while those who couldn't win only 42%.

Arc is being sunset on December 22, 2026

Arc will be sunset on December 22, 2026, and accounts will be deactivated with associated data deleted within 30 days. Many Arc features live on in Dia, allowing a smooth transition with just a few clicks.

Show HN: agent-usage-guard – a Claude Code mod to protect your usage window

https://release-assets.githubusercontent.com/github-production-release-asset/1315293781/ded114f0-7f29-463f-b181-1e998f4a7e81?sp=r&sv=2018-11-09&sr=b&spr=https&se=2026-10-22T18%3A57%3A23Z&rscd=attachment%3B+filename%3Dagent-usage-guard.gif&rsct=application%2Foctet-stream&skoid=96c2d410-5711-43a1-aedd-ab1947aa7ab0&sktid=398a6654-997b-47e9-b12b-9515b896b4de&skt=2026-10-22T17%3A57%3A23Z&ske=2026-10-22T18%3A57%3A23Z&sks=b&skv=2018-11-09&sig=aNs%2BM%2B23QIyZwqbJHQ40uNsYolJrwSnktG0%2FkYFuVPE%3D&jwt=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmVsZWFzZS1hc3NldHMuZ2l0aHVidXNlcmNvbnRlbnQuY29tIiwia2V5Ijoia2V5MSIsImV4cCI6MTc5MjY5Mzc2MCwibmJmIjoxNzkyNjkzNDYwLCJwYXRoIjoicmVsZWFzZWFzc2V0cHJvZHVjdGlvbi5ibG9iLmNvcmUud2luZG93cy5uZXQifQ.kN2fv-kdQ9TJvhib_zW5q4Ehx-nWXEnRUUp8P0b-Yyg&response-content-disposition=attachment%3B%20filename%3Dagent-usage-guard.gif&response-content-type=application%2Foctet-stream
Agent-usage-guard is a Claude Code mod that prevents excessive usage by holding subagent fan-out, heavy-context churn and retry loops before they happen. It runs locally without network or processes, storing only counts and coarse buckets.

The Chalk and the Airplane

https://unintendedconsequenc.es/wp-content/uploads/2019/03/dandelion-unintended-consequences-e1567979449849.jpg
Mathematicians are struggling with the impact of AI-generated proofs, feeling a loss of romance and discovery in their field. They fear that the use of AI will lead to a decline in human understanding and creativity.

Parsing EDIFACT in Python with syntax trees

https://raw.githubusercontent.com/AmadeusITGroup/Edison/main/docs/edison.png
Edison is a Python library for parsing EDIFACT messages, modeling them as syntax trees and then validating or pretty-printing against those structures. It can handle multiple schemas across versions and supports escaping EDIFACT separators.

Rule 30: one black cell

https://www.wolframcollatzmahler.com/share/rule30.png
Rule 30 is a simple program that generates random-like behavior, and Stephen Wolfram has offered $30,000 in prizes for answers to three questions about its centre column. The column's properties are still unknown.

Objects, attributes, maps, oh my

The author discusses how dynamically typed programming languages model objects as unordered maps of attributes, which can lead to slow performance due to indirection and hashing. To optimize this, they introduce a "map" data structure that stores attributes in-line on the object, allowing for fast reads and writes.

Monoidal computer I: Basic computability by string diagrams (2012)

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
A new model of computation is proposed using monoidal categories, conforming to the Church-Turing Thesis and capturing computable functions. It aims to provide a high-level programming language for studying computational resources like one-way and trapdoor functions.

Migrate Your 300-Node Redis Cluster to Just 3 Lavik Nodes

https://lavik.dev/blog-covers/300-redis-nodes-to-3-lavik-nodes.svg
Lavik is a Redis-compatible key-value store that uses NVMe SSD for capacity, reducing the need for expensive DRAM. It offers higher throughput than traditional in-memory servers and can handle large datasets efficiently.

Did it just build.. a clock?

https://theclock.online/og-image.png
This online clock displays digital, analogue, and flip styles with seconds and date in 12- or 24-hour format. It saves settings and uses device's clock and time zone, with controls reappearing after three seconds of inactivity.

IBM CEO says open weight models are now irresistibly good and cheap on-prem

https://image.theregister.com/5299461.webp?imageId=5299461&x=0.00&y=6.18&cropw=100.00&croph=66.89&width=360&height=360
IBM CEO Arvind Krishna sees open weight models as a viable option for on-prem enterprise use, offering 90% effectiveness at 10% of the cost. IBM is experiencing booming interest in on-prem AI infrastructure and plans to ease deployments with software solutions.

Flapping Airplanes

Demand for AI is expected to increase exponentially, driven by companies' ability to efficiently use resources. Flapping Airplanes researches radical techniques to improve AI efficiency, bridging software and hardware divides.

Show HN: Replacing CAPTCHAs with adaptive proof-of-work in WordPress

https://ps.w.org/gdpr-compliant-recaptcha-for-all-forms/assets/banner-772x250.jpg?rev=2819605
This plugin provides a spam protection solution for WordPress sites, using a proof-of-work challenge that requires visitors' browsers to solve a small puzzle before submitting forms. It covers all form types and is GDPR/DSGVO/RGPD-friendly without requiring external services or cookies.

Show HN: Build a world on your phone, explore it in XR on Vision Pro and Quest

https://static.wixstatic.com/media/503817_d5703a0ea5b048669791c8338cf1c2f5~mv2.png

Radio Days

https://substackcdn.com/image/fetch/$s_!yECC!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F2344c79b-90c8-47e1-9b53-1deadab195dc_720x769.jpeg
The author reminisces about listening to music on the radio with his mother in 1970s New York, discovering classic songs and artists like Billie Holiday, Frank Sinatra, and Led Zeppelin.

Rails Is a JIT Compiler

https://railsatscale.com/2026-10-21-rails-is-a-jit-compiler/f5090c957c64098d7473489061acf1c86df8b8f7.png
Rails enums use dynamic behavior, but can be optimized by inlining the generated code at build time. A PR has been created to improve performance and readability of Rails enums.