Hacker News Digest

September 30, 2026 · 85 Hacker News

▲ 1622Gemini 4 Argon writes 1M tokens in one go, cracks a healthcare flaw other models missed
Google's Gemini 4 Argon is a frontier model for long-horizon reasoning, rolling out first to trusted cyber defenders. It sets state-of-the-art scores on DeepSWE v1.1 (77.9%), LVBench (91.7%), and CWE…
▲ 908Opus 5.5 may be getting quietly worse — this benchmark is watching
livenerf is a 30-day, pre-registered benchmark that tracks whether Claude Opus 5.5 degrades after its 2026-09-22 launch. Using a frozen panel of 78 questions that the model only sometimes answers cor…
▲ 658Pi.dev reverses course and adds MCP support to its core
Pi.dev once proudly declared it would never support MCP, and its team dismissed the protocol on podcasts. Now MCP ships in Pi's core. The shift came after rethinking MCP's evolution and building Code…
▲ 504One Closed Strait, Three Crises: How the World Became a Chain of Dependencies
A Polish writer traces how the closure of the Strait of Hormuz since March 2026 has rippled through fuel, food, and heating. Brent crude hit $108 a barrel, US diesel topped $6 a gallon, and EU gas st…
▲ 437Singapore's Government Dating App Runs on a Nobel Prize-Winning Algorithm
Singapore's FirstDate, a pilot dating app for public servants aged 21–35, uses the Gale-Shapley stable marriage algorithm—the 1962 game theory method that won the 2012 Economics Nobel. Users rank pre…
▲ 403DeepSeek's Free Gift Shrinks AI Memory by 437x—and Western Labs Are Quietly Cashing In
The AI race has taken an awkward turn: Western labs like Anthropic and OpenAI are quietly adopting DeepSeek's KV cache optimizations, which cut memory use by up to 437x. DeepSeek shared these breakth…
▲ 382The Real Reason the Bronze Age Collapsed
The Bronze Age collapse around 1200 BC wiped out the Hittites, Mycenaeans, and other great powers, and no comparable empires returned for centuries. Patrick Fitzsimmons argues that the usual suspects…
▲ 379Vermont's hidden power plant: home batteries now the state's largest source of electricity
Green Mountain Power has installed batteries in over 5,500 Vermont homes, linking them into a virtual power plant that now provides 110MW—the state's largest power source. The program has replaced ag…
▲ 369How the Bloomberg Terminal Changed Wall Street Forever
In 1981, after being fired from Salomon Brothers, Michael Bloomberg founded Innovative Market Systems to build a terminal that combined real-time data with instant analytics. The first Market Master…
▲ 318NASA secretly pulls a Blackbird from its display pole to fly again after 27 years
NASA has quietly removed SR-71A Tail No. 844 from its display at Armstrong Flight Research Center and offered jobs to retired SR-71 engineers to help return the Blackbird to flight after nearly 27 ye…
▲ 311My Great-Great-Grandfather Thought Technology Would Replace Him Too
A farrier in rural France watched a car roll through the next town and soon became a mechanic, keeping his purpose of helping people get around. The author, surrounded by developers anxious about AI,…
▲ 310A 16-Year-Old Found a Flaw That Could Have Unlocked 17 Trillion Microsoft Records
Faav, a 16-year-old bug bounty hunter, discovered that Microsoft's internal Titan analytics service never verified JWT signatures. By crafting an unsigned token with the username 'admin', he executed…
▲ 302Backblaze's Hard Drive Failure Rate Hits 1.73%, Highest in Years
Backblaze's Q2 2026 Drive Stats report shows an annualized failure rate of 1.73% across 354,415 drives, the highest in recent quarters. Three drives exceeded the 6.95% outlier threshold, including a…
▲ 294Declassified: The Top-Secret Satellites That Took Electronic Spying to the Battlefield
For over 40 years, the NRO launched suitcase-sized ELINT satellites with code names like URSALA, RAQUEL, and FARRAH. Hitchhiking on larger photo-reconnaissance satellites, they evolved from chasing S…
▲ 292I Built a LinkedIn Slop Detector in 90 Minutes
The author rants about LinkedIn's performative culture, where every other post is a generic computer vision project, like hand tracking or pothole detection. To prove how trivial these are, he builds…
▲ 272Solving Factorio Quality with Matrix Math
Simon Sapin, a Factorio player, uses matrix math to model the game's quality mechanics. He explains the probabilities of quality upgrades, the role of recyclers in upcycling loops, and how to plan fa…
▲ 269Before Pixels: The Modular Industrial Dashboards That Ran the World
During museum visits in Germany and Poland, I kept encountering modular industrial dashboards—the physical control panels that once monitored air traffic, subway trains, and power plants. They light…
▲ 264Why Is Sam Altman Still a Free Man?
A legal filing by The New York Times and 11 other publishers reveals that OpenAI deliberately bypassed the Times' paywall to scrape millions of articles, with co-founder Greg Brockman responding 'ah…
▲ 244Brain Waves Are Far More Complex Than Scientists Thought
New research reveals that traveling waves in the brain are not just simple planar oscillations but include spiral and concentric patterns. These complex waves may help reorganize the brain in real ti…
▲ 238EDG's C++ front-end goes open source after 30 years
On September 30, 2026, EDG's C++ front-end source code becomes public, with The C++ Alliance as its nonprofit home. The same engine and standards continue under a new steward, funded by tax-deductibl…
▲ 230TLA+ can't check what it can't express
Boris Cherny's claim that Claude Opus used TLA+ to find race conditions has sparked excitement about formal verification. But TLA+ has limits: it can't express reachability properties (like proving a…
▲ 220Netlify swaps V8 isolates for Firecracker MicroVMs, making Edge Functions 5x faster
Netlify rebuilt its Edge Functions infrastructure, replacing a hosted V8 isolate service with Firecracker MicroVMs running inside its own edge network. Median warm invocation latency dropped from 25–…
▲ 214Data centers in Europe keep their water and electricity use secret
A year-long investigation by Lighthouse Report and European media found that most data centers in Europe refuse to disclose their environmental impact, despite an EU directive requiring it. In the Ne…
▲ 210Jev: The Text Classifier That Surprised Even a Skeptic
Sebastian Raschka traces text classification from bag-of-words and logistic regression through RNNs and ULMFiT to the newly released Jev model. Initially skeptical that Jev was 'just a classifier,' h…
▲ 204The night sky is getting 10% brighter every year — and we're forgetting what darkness feels like
Light pollution is growing 10% annually, and 80% of people now live under washed-out skies. In this first-person essay, Tove Danovich describes lying under the Milky Way in Oregon's outback and argue…
▲ 192Ledge - Runnable Markdown Notebook for Developers
Ledge is an open-source Markdown notebook that executes shell commands, code, SQL, and AI prompts directly in your notes. Each note gets its own persistent shell, so variables and directories carry o…
▲ 189Magnitude's self-optimizing engine runs open models 2x faster than llama.cpp
Magnitude is an open-source inference engine that compiles and tunes its kernels on your device before a model runs, delivering up to 2x faster performance than llama.cpp—92% faster decode on Apple S…
▲ 180Halfspace: An Experimental IDE That Makes Distance Fields the Star
Halfspace is an experimental IDE for solid modeling with distance fields, built on the Fidget kernel. It lets you incrementally build models, visualize the underlying fields, and export images or tri…
▲ 171Slug Renders GPU Text Straight from Outlines, No Atlas Needed
GPU text rendering has long relied on texture atlases, SDF, or MSDF—all baked at fixed resolutions that blur or round corners when scaled. Slug, Eric Lengyel's 2017 algorithm, now in the public domai…
▲ 167Three Deaths at Burning Man Is Statistically Normal, but Near-Zero Every Year Is Not
Three people died at Burning Man in 2026, the highest toll in its history. A crude comparison to the U.S. mortality rate predicts about 12 deaths, but after age-standardization the expected number dr…
▲ 163When Oil Prices Spike, the Money Flows to Oil Companies
Oil prices jumped from $66 to $101 a barrel after the U.S. and Israel attacked Iran. Energy economists explain that the windfall goes mainly to oil companies, but who benefits depends on ownership an…
▲ 156Tesla borrows $30 billion as profits evaporate
Tesla has opened $30 billion in credit lines from Citi and Wells Fargo, a regulatory filing shows, replacing a $5 billion facility. The move comes as profits have thinned to hundreds of millions, cap…
▲ 150I Needed 1+1, So I Built a Functional Programming Language
A simple data structures assignment to evaluate 1+1+1 with a binary tree spiraled into building a full functional language in C. The author implemented closures, a garbage collector, a custom arena a…
▲ 141NRC grants first U.S. construction permit for a BWRX-300 small modular reactor
The U.S. Nuclear Regulatory Commission issued its first construction permit for a BWRX-300 small modular reactor to the Tennessee Valley Authority at the Clinch River site in Oak Ridge, Tennessee. Th…
▲ 135An American Did a Machine Learning PhD in Japan While Working at Google
An American on the MEXT scholarship completed a computer science PhD at Tokyo Institute of Technology while working part-time at Google. He explains why Japan's flexible student visa, three-year grad…
▲ 133How our vibe-coded website looks like a designer made it
Yakko Majuri, founder of Railcode, explains how coding agents helped him realize a playful, Rollercoaster Tycoon-inspired website. He shares his iterative process: generating multiple design options,…
▲ 130JBR-001 - Open-source 3D-printable desktop companion robot
JBR-001 is an open-source, 3D-printable desktop robot powered by the Arduino UNO Q. It combines a camera, distance sensor, buzzer, animated display, and three servo motors to create an interactive co…
▲ 128Last.fm killed its RSS feeds, so this developer built new ones
Last.fm discontinued its RSS feeds, but lfm.xiffy.nl restores them for any username. You get four feeds: recent tracks, loved tracks, top tracks, and top artists, with optional periods from 7 days to…
▲ 127Dental Scope: Open-Source 3D Explorer Takes You Inside a Single Tooth
Dental Scope is an open-source, interactive 3D explorer of dental anatomy, from the whole mouth down to the pulp and root canals of a single tooth. Built on BodyParts3D and Z-Anatomy data, it lets yo…
▲ 127AI can write your code, but only you can write the commit message
Before AI, I wrote long commit descriptions to explain the what and why, a process that forced me to reflect on my code. Now agents write both code and commits, but they often fabricate the why when…
▲ 124Plato's Five Platonic Solids: The Mathematical Art of Origami
Mathigon's Mathematical Origami collection offers folding instructions for Platonic and Archimedean solids, stars, and compounds. Plato linked the five Platonic solids to the classical elements, and…
▲ 123America.gov launches AI chat to answer questions from 29,000 government websites
America.gov is a new AI-powered chat that pulls answers only from official federal, state, and local government sources. It’s free, ad-free, and designed to protect privacy—your conversation disappea…
▲ 117YouTube's A/B Testing of Videos Breaks the Shared Experience, Warns Marques Brownlee
Marques Brownlee's video essay "Dear YouTube" criticizes the platform's upcoming feature that lets creators publish A/B variants of videos. He argues it shatters the communal experience of everyone w…
▲ 113Mathematicians Tell AI Labs: Stop Testing Advanced Math on Proprietary Models
A set of recommendations for AI labs that produce significant mathematical results. Drawing on over 600 responses from the mathematical community, the document argues that labs must not treat math re…
▲ 113Purdue Professor Flags 267 Students for AI Cheating in CS 240
Dr. Jeffrey Turkstra, a teaching professor at Purdue, reflects on the Spring 2026 CS 240 course, where 267 of 584 students were flagged for AI/LLM cheating. He defends the clear syllabus policy, expl…
▲ 109Gemini 4 Argon (High) Tops Artificial Analysis Intelligence Index
Artificial Analysis has published its intelligence, performance, and price analysis for Gemini 4 Argon (High). The model is evaluated on the Intelligence Index v4.3.2, which combines ten benchmarks i…
▲ 105Enigma - Interactive 3D Model of the WWII Cipher Machine
Enigma is an interactive 3D model that brings the legendary WWII encryption machine to life. Explore its inner workings through 16 detailed lessons, from setting rotor dials to understanding the doub…
▲ 100SDF Public Access Unix System Has Been Running Since 1987
A Hacker News thread about SDF, a public access Unix system founded in 1987 that still offers shell accounts to members. Commenters praise its Mastodon and Pixelfed instances, recommend SSHing in for…
▲ 100Chompi sampler goes open source as it's discontinued
Chompi Club has released the complete hardware and software source files for the CHOMPI Mk1 sampler as a discontinuation open-source release. The GitHub repository includes firmware for TAPE, TEMPO,…
▲ 93Gitea 28.0.0 drops the 1. prefix and adds audit logging, bot accounts, and more
Gitea v28.0.0 is out, and it drops the historical 1. prefix from version numbers. This release brings audit logging, bot accounts, HTTPS deploy tokens, admin impersonation, code-owner approval rules,…
▲ 90GPU shader data layout mismatch: a 12-byte gap that can freeze your computer
When sharing configuration data between Rust and WebGPU compute shaders, subtle layout differences can cause GPU threads to spin forever. Matt Keeter discovered that a mat3x3 matrix takes 48 bytes in…
▲ 87The Ballmer Peak: Programmers' Legendary Drunken Productivity Zone
The Ballmer Peak is a joke from xkcd that programmers hit peak productivity at a blood alcohol content of 0.1337%, a nod to leet. Named after Steve Ballmer, it has inspired hackathons and satirical s…
▲ 86Rust-built PSSA beats a transformer by 0.45 nats and runs 12x faster on CPU
PSSA is a non-transformer language model written from scratch in Rust, with no PyTorch or TensorFlow. It uses a recurrent state-space core, an episodic memory bank, and plastic weights. On 12.7M toke…
▲ 82KCC - Maximize eInk manga quality with 2D DFT and dithering
KCC (Kindle Comic Converter) optimizes comics and manga for E-ink ereaders like Kindle, Kobo, and ReMarkable. It delivers true fullscreen, margin-free pages and uses advanced techniques like 2D DFT t…
▲ 80GPT-6.1 Sol arrives just 7 days after GPT-6 Sol, nearly matching Astra at a quarter of the cost
GPT-6.1 Sol lands one point below GPT-6 Astra on the Intelligence Index while costing less than a quarter per task ($0.72 vs $3.26). It gains 4 points over GPT-6 Sol and 5 over GPT-5.6 Sol, with nota…
▲ 80I let an LLM control a robot arm overnight — and it stacked blocks by morning
A software engineer with 25 years of experience bought a preassembled LeRobot SO-101 arm and a webcam, then handed control to LLMs. After calibration and spatial mapping failed, he removed himself fr…
▲ 80Arduino Library Reverse-Engineers the AMT630A OSD Chip in $35 Backup Monitors
A new Arduino/ESP32 library exposes the AMT630A's five hardware OSD windows for text, custom glyphs, 4bpp bitmaps, palette animation, and scaling. It includes a Python image converter and optional au…
▲ 80Coltrane's Tone Circle: Decoding the Geometry Behind 'Giant Steps'
John Coltrane once sketched a diagram for Yusef Lateef: the chromatic scale arranged in circles, with lines tracing harmonic relationships. This post rebuilds that diagram as an interactive widget an…
▲ 79Ubuntu 26.04.1 LTS Arrives with Wayland, Rust, and NVIDIA CUDA in Repos
Ubuntu 26.04.1 LTS Resolute Raccoon is now available, consolidating fixes from the initial release. It ships with GNOME 50 and fully embraces Wayland, and is the first Ubuntu release to natively dist…
▲ 79Miller's Monster: The Polyhedron with 1280 Faces to Fold
The Great Dirhombicosidodecahedron, known as Miller's Monster, is a uniform star polyhedron with 124 faces, 240 edges, and 60 vertices. It uniquely has eight faces meeting at each vertex and is the o…
▲ 76Claude Says: Why Deferring to AI Is a Sign of Weakness
A frustrated author pushes back against people who use AI as a crutch in technical discussions. If you can't answer a question without asking Claude, you've shown you lack authority on the subject. W…
▲ 71Cloudflare Is Building a Certificate Authority for the Whole Internet
Cloudflare has applied to the Chrome, Apple, Microsoft, and Mozilla root programs and signed an agreement to acquire a trusted root from GlobalSign, aiming to become a public certificate authority. T…
▲ 67This Wallpaper Pulls Electricity From Thin Air—and Dehumidifies Your Room
Researchers at Binghamton University have created the first wallpaper-type moist-electric generator. A single paper sheet uses a peripheral-absorption, center-evaporation design: glycerol at the edge…
▲ 6168 Dead Floppy Emus, 65 Rescued: Inside a Hardware Failure Analysis
After years of accumulating QA failures, I finally dedicated a month to failure analysis on 68 Floppy Emu boards. The leading culprit? Clock crystals—42 boards had no clock or a bad clock, traced to…
▲ 59Let's Ditch Google as a Verb
Even after three years without using google.com, the author still says "to Google" when asking someone to search the web—a habit that persists from Google's long search monopoly. Starting today, they…
▲ 56Fake Atari 2600 Box Art That Fooled the Internet
In 2008, the blog Mightygodking posted a series of photoshopped Atari 2600 box covers with absurd titles like 'It's Fucking Checkers' and 'Obligatory Educational Game.' The images were so convincing…
▲ 52Lathoa - Math app where AI is wrong on purpose
Lathoa is a critical-thinking math app for kids aged 10–14. In each challenge, an AI companion named Errol solves a problem step-by-step but makes a deliberate mistake. Kids must spot the bad step, e…
▲ 51Functional ultrasound imaging could be 1000x better than fMRI—and it's just getting started
Functional ultrasound imaging (fUSI) captures rapid movies of brain tissue, tracking blood flow changes with up to 20% signal change—far exceeding fMRI's few-percent BOLD. It offers ten times higher…
▲ 47Ken Griffin Gives Carnegie Mellon $3 Billion, the Largest Individual Gift in Higher Education History
Citadel founder Ken Griffin has given Carnegie Mellon University $3 billion, the largest individual gift ever to a higher education institution. One billion dollars will strengthen the Pittsburgh cam…
▲ 34Parrot - Open-Source AI Meeting Recorder with Live Copilot for Mac
Parrot is a free, open-source meeting recorder and live copilot for Mac that runs entirely on your machine. It auto-detects calls, transcribes and identifies speakers locally, and suggests answers fr…
▲ 31Recursive Make and -j: The Jobserver Trap
Recursive Makefiles often break parallel builds because the -j jobserver isn't forwarded to sub-makes. Testing GNU Make 3.81 through 4.3 reveals inconsistent warnings and behavior: without + or $(MAK…
▲ 28Quarry: Dumb Servers, Smart Clients for Secure OS Image Distribution
Quarry is a new software delivery toolchain that uses The Update Framework (TUF) to securely distribute immutable OS images. It embraces a 'dumb server, smart client' model where static blobs are ser…
▲ 28Groundrun Automates Testing of Every Wi-Fi Setup Method on ESP32
Groundrun demonstrates automated hardware-in-the-loop testing for all five Wi-Fi commissioning methods on the ESP32-C6: Bluetooth, Soft AP, captive portal, SmartConfig, and WPS. Using Claude to gener…
▲ 26EDG C++ Compiler Goes Open Source
The EDG C/C++ front end, long known for its parsing compatibility and bug emulation that ensures code compiling with Clang, GCC, and MSVC also compiles with EDG, is now open source on GitHub. The rep…
▲ 22The Dual Polytope: A Simple Trick for Simplifying Convex Hulls
Simplifying a convex hull usually means merging or dropping face planes and rebuilding the hull. Cairn Overturf explains the dual polytope approach using the support function's level sets. The key in…
▲ 21Strata - Expressive semantic layer that can say no to your LLM
Strata is a semantic layer that brings discipline to AI-powered analytics. It runs in Docker with a bundled database, letting you model data from Snowflake, Databricks, PostgreSQL, and more using YAM…
▲ 20Two Raleigh Vektars Donated for Restoration, Fulfilling a 30-Year Dream
I finally got my hands on two Raleigh Vektars, the 1985 computerized BMX with a digital speedometer, radio, and sound effects. Donated by Ally the Retrohunter, they're rusty and yellowed but salvagea…
▲ 19Corral - Kill every command your agent starts
Corral is a Linux tool that runs a command with a time limit and guarantees no leftover processes when it returns. It solves a common problem for AI coding agents and CI jobs: processes that daemoniz…
▲ 17Mechanochemistry of Molecular Motors
A video presentation on the mechanochemistry of molecular motors, exploring how these tiny machines convert chemical energy into mechanical motion at the molecular scale.
▲ 16I Turned a Free DIRECTV DVR Into a Standalone Jellyfin Box
A friend gave me a DIRECTV HR54-700 Genie DVR. I exploited a boot-plugin bug to get persistent root, removed the satellite blocker, and reused the Broadcom decoder and WebKit UI. The final box boots…
▲ 13The World's First Nuclear Reactor Was a Stack of Graphite in a Squash Court
On December 2, 1942, the coldest day in Chicago in nearly fifty years, a team at the University of Chicago's Stagg Field started up the Pile — forty thousand graphite blocks holding uranium, with han…
▲ 12Wavelets in 3D Graphics: A Memory-Saving Trick for Textures
Wavelets are a hot topic in computer graphics for multiresolution analysis and compression. I focus on the Haar wavelet basis to compress low-contrast textures in a 3D polygonal game engine I'm devel…
▲ 12From 1% to 40%: How Solar Cells Learned to Harvest the Sun
A timeline from the U.S. Energy Information Administration traces photovoltaic evolution: from early cells converting under 1% of light to today's 40% efficiency. Key milestones include Bell Labs' 6%…
▲ 7SATIS Shield - BGP Blackholing for Single-Router Networks
SATIS Shield brings enterprise-grade DDoS protection to single-router networks. Using BGP blackholing (RTBH), it drops malicious traffic upstream before it reaches your network. No need for multihomi…
▲ 6AI wrote most of my text editor, and it actually works
Jamie Brandon rewrote his text editor, Focus, from scratch with heavy AI assistance, mostly using Opus 5 in Claude Code on a $20 subscription. He now commits AI-generated code after minimal review, r…