Filing the corners off my MacBooks

https://kentwalters.com/posts/corners/imgs/IMG_0796.jpeg
User filed off sharp corners of their MacBook for comfort, using a file and sandpaper in increments. They're happy with the result and encourage others to modify their machines for a better user experience.

Optimal Strategy for Connect 4

https://2swap.github.io/WeakC4/sample.png
A weak solution to Connect 4 was developed using a language that describes perfect play for a small subset of nodes and a small opening tree. This solution uses no search during runtime and fits in about 150 kilobytes.

Starfling: A one-tap endless orbital slingshot game in a single HTML file

A one-tap space game. How far can you sling? Play free in your browser.

Show HN: Pardonned.com – A searchable database of US Pardons

User created pardonned.com to verify claims and easily access pardons data, using Playwright, SQLite, and Astro. They plan to extend the site with analysis and comparison tools to break down pardon composition by President and visualize changes in pardon numbers.

Volunteers turn a fan's recordings of 10K concerts into an online treasure trove

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Aadam Jacobs recorded over 10,000 concerts with increasingly sophisticated equipment over four decades, documenting early performances of bands like Nirvana, R.E.M., and The Pixies. His collection is now being cataloged, digitized, and uploaded to the Internet Archive for music lovers to stream and download.

1D Chess

1d-chess is a simplified chess variant where white plays against an AI. Assuming optimal play, white has a forced win by checkmating the enemy king.

Installing every* Firefox extension

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The user scraped all Firefox extensions using a public API, finding 84,194 extensions, and discovered various issues including phishing extensions, malicious code, and performance problems when installing all extensions at once. The user documented their process and findings, including the use of a script to download and install all extensions, and the performance issues that arose when ...

Chimpanzees in Uganda locked in eight-year 'civil war', say researchers

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Chimpanzees at Uganda's Kibale National Park have been locked in a civil war for 8 years with 24 killings, including 17 infants. Researchers say the conflict may inform how early human conflict developed and highlights the danger of group divisions.

Artemis II safely splashes down

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NASA's Artemis II astronauts returned to Earth with a splashdown landing in the Pacific Ocean after making a high-speed reentry through the atmosphere.

’Abhorrent’: the inside story of the Polymarket gamblers betting millions on war

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Polymarket, a prediction market, allows users to bet on various events, including war, with some users trying to shape the world to secure a payday. Critics argue that this can lead to manipulation and corruption, while others see it as a way to gather data on the future and understand complex events.

AI assistance when contributing to the Linux kernel

https://opengraph.githubassets.com/0fed47c9ef095c1ae9caf4cab9b51df2c9ef4fdd0dd30fff84c66d85130516b9/torvalds/linux
AI tools cannot add Signed-off-by tags, only humans can certify the DCO. Contributions from AI tools should include an Assisted-by tag for proper attribution.

WireGuard makes new Windows release following Microsoft signing resolution

Jason Donenfeld released updated WireGuard for Windows and WireGuardNT with new features, bug fixes, and performance improvements. Users can update via the built-in updater or download the latest version from the WireGuard website.

France's government is ditching Windows for Linux, says US tech a strategic risk

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The French government plans to shift away from proprietary technologies outside the EU and focus on open-source solutions, including ditching Windows for Linux. This move aims to regain control over digital destiny and reduce dependence on American tools.

Industrial design files for Keychron keyboards and mice

https://raw.githubusercontent.com/Keychron/Keychron-Keyboards-Hardware-Design/main/docs/assets/hero-keychron-hardware-design.jpg
Keychron shares production CAD files for compatible accessories and educational use. Users can study and remix designs, but not copy or sell Keychron products.

Productive Procrastination

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The writer struggles with procrastination, preferring to work on new projects rather than older ones due to the brain's preference for novelty. Understanding the psychological principles behind procrastination can help reduce guilt and increase productivity.

How Passive Radar Works

https://www.passiveradar.com/content/images/size/w2000/2026/04/Silentium_Defence_-_Passive_Radar_for_Space_Domain_Awareness_-_HIgher_Resolution_3-2-1-1.jpg
Passive radar uses existing signals to detect objects by measuring Doppler shift and time delay. It creates an ellipse of possible locations, requiring multiple transmitters or receivers for accurate positioning.

CPU-Z and HWMonitor compromised

https://regmedia.co.uk/2021/04/13/malware.jpg
CPUID website briefly exposed visitors to malware after attackers hijacked its backend, turning trusted download links into malicious ones. The issue has been fixed, but users who clicked on compromised links may have downloaded malware targeting browser data and credentials.

Sybilproof reputation mechanisms (2005) [pdf]

Helium is hard to replace

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Helium supply chain disruptions due to the war in Iran have caused prices to spike and shortages to loom, with many industries struggling to find substitutes for the essential gas. Helium's unique properties make it crucial for various applications, including MRI machines, semiconductor manufacturing, and fiber optic cable production.

Bevy game development tutorials and in-depth resources

The Rails guides for Bevy were created for friends and have evolved over time, built with a static site generator called Staticky. The site offers resources for Bevy developers and also features a Pong Tutorial for beginners and a TLDR for advanced users.

JSON formatter Chrome plugin now closed and injecting adware

https://opengraph.githubassets.com/2a8a44c8ffa5865c90c2dd31d9d74944ca636cb533df2d8d65121056bf1d32eb/callumlocke/json-formatter
JSON Formatter is now closed-source and commercial, but the final open source version, JSON Formatter Classic, remains available for use. It provides a simple, local-only JSON-formatting extension with no updates.

A practical guide for setting up Zettelkasten method in Obsidian

https://desktopcommander.app/blog/wp-content/themes/desktopcommander-blog/dc-logo-dark.png
To set up a Zettelkasten system, start with a minimal structure, write atomic notes, and build links from day one, using tools like Obsidian and Desktop Commander for AI support. Regular maintenance, such as clearing the inbox and linking notes, is key to keeping the system usable over time and preventing issues like orphaned notes and stale Maps of Content.

20 years on AWS and never not my job

The user created their first AWS account in 2006 and started providing feedback on AWS services, including security concerns and feature requests, which led to improvements in services such as IAM and EC2. Over the years, the user continued to contribute to AWS, including helping to bring FreeBSD to EC2, and was eventually recognized as an AWS Hero in 2019 for their contributions to the platform.

Italo Calvino: A traveller in a world of uncertainty

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Quien – A better WHOIS lookup tool

https://raw.githubusercontent.com/retlehs/quien/main/demo.gif
quién is a WHOIS lookup tool with interactive TUI and JSON subcommands for scripting. It offers various views and detection features for domains and IPs.

The Bra-and-Girdle Maker That Fashioned the Impossible for NASA

You don't have permission to access "http://thereader.mitpress.mit.edu/the-bra-and-girdle-maker-that-fashioned-the-impossible-for-nasa/" on this server.

Watgo – A WebAssembly Toolkit for Go

https://eli.thegreenplace.net/images/2026/watgo-diagram.png
watgo is a WebAssembly Toolkit for Go that parses WAT, validates, and encodes WASM binaries. It uses wasmir for semantic representation and has a CLI and Go API.

Intel 486 CPU announced April 10, 1989

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Intel announced the 486 CPU at Comdex on April 10, 1989, priced at $950 each in quantities of 1,000. Predictions about its limited demand and high price were later proven incorrect as the 486 became a viable processor for several years.

Launch HN: Twill.ai (YC S25) – Delegate to cloud agents, get back PRs

https://twill.ai/landing_assets/code-file.avif
Twill automates coding tasks, allowing developers to focus on high-priority work. It streamlines workflows, enabling teams to ship more and context-switch less.

Investigating Split Locks on x86-64

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Split locks cause performance regressions in modern CPUs, particularly affecting memory access performance beyond L2 caches. Hardware and software developers should optimize split locks for better performance and reduced noisy neighbor effects, rather than introducing new problems like Linux's default mitigation.