Five Percent Overgrown
A Chrome extension grows vines over the tabs you stop looking at and locks the page until you slash them away. On Hacker News, people argued about whether an unread tab is a debt or a cellar.
The Key Was Four
Eight intermediate certificates from an Indian authority turned out to be protected by private keys like 4, 56 and 230, numbers a laptop recovers in under a second. Then mitmproxy shipped a flag that uses them, and the joke landed because revocation never worked.
The Average of All Those Outputs
Linear's co-founder says an engineer plus an agent is a small software factory, and products are starting to look like Frankenstein's monster. The missing ingredient isn't the human-written line of code.
Four Kernels, and a Proof of False
Lean's kernel accepted a disproof of the Collatz conjecture in July. The fix, shipped in v4.35.0, was not to trust proofs less but to ship four independent checkers, one of them written and proven consistent by a model.
Faster Than the FFT, in a Computer That Doesn't Exist
OpenAI's math repository claims a Fourier transform faster than the 1965 algorithm. Ben Recht read it back through a chatbot and found a speedup that only arrives at sizes larger than the number of atoms in the universe.
The Weekend Toy That Ended Up in Grand Theft Auto
One weekend in August 1996, Patrick Kerr wrote a 2D physics demo in GFA BASIC on an Atari ST. Thirty years later he rebuilt it for the browser, and the comment thread spent almost as long arguing about who wrote the page.
Two Photographs and the Work They Forgot
Margaret Hamilton died at 90 and was remembered through a photograph of Apollo printouts that may not be her code. Rosalind Franklin is remembered through Photograph 51, which a new paper argues she understood all along.
The Patch That Started the Race
A bug in F1's spec power-unit software stuck cars in an idle loop on the formation lap, so the FIA wrote a patch and pushed it to all eleven teams mid-race - and the field finally went green fifty minutes late.
The Kill Switch Should Be On by Default
Simon Willison thinks every pay-by-usage service needs a hard budget cap - spend X dollars, get errors, stop - and the comment thread on his post is a tour of everyone who has already learned that lesson the expensive way.
The Plumbing Is the Product
Earendil shipped Pi 1.0, a deliberately minimal coding agent whose headline feature list contains no new capabilities at all - just deferred tool loading, cache warming, and a non-LLM router named Jev that decides when to hand work off from Claude Opus to GPT.
The Honest Benchmark Is the One You Can't Inspect
Specific Labs took ten real engineering tasks out of private production codebases, licensed from the companies that own them, and ran eight frontier model-and-harness combinations against all of them: 640 graded rollouts, a best score of 38.8%, and an outright zero on one task no configuration ever solved. The code is invisible on purpose. Hacker News spent the day asking who gets to check the scorer.
Agents Made Writing the App Twice the Cheap Option
Shopify went all-in on React Native in 2020 so it would never build the same feature twice. This week its engineering blog said the opposite: with coding agents translating between Swift and Kotlin, the Shop app was rebuilt as a fully native app in 12 weeks, its 300-screen flagship is mid-migration, and three of its React Native libraries are being handed off or archived. The Hacker News thread asked the question the post never answers: what did the tokens cost?
Everyone Is Working Around the Same Bugs
Dan Luu makes the case for bug blindness: most people hit the same broken software every day and stop noticing, and much of what we call computer literacy is really a library of invisible workarounds. The Hacker News thread proved his point by finding a bug in his own blog.
Virtual iPhones Are Here, Built on Apple's Own Framework
A small Hacker News post this morning showed a full iPhone operating system - kernel, userspace, and all - booting inside a virtual machine on a Mac. The tool is built on Apple's own Virtualization.framework and the research VM infrastructure behind Private Cloud Compute, and it does what Apple never shipped: a real iPhone OS image running as a VM.
Fast Software Is Now a Few Sentences Away
Dan Luu argues the cost of performance optimization just collapsed - and HN is split on whether anyone will actually use it.
A Write That Vanished Into Thin Air
Tailscale's months of outages traced back to a data race in SQLite that had lurked for 16 years - a committed write, gone without a trace, no error raised.
The Code Map That Cuts Token Waste by 38x
A Python tool called code-review-graph uses Tree-sitter to build a persistent code map for AI tools — and the claimed 38x to 528x token reduction is backed by real benchmarks.
Claude Code's Embedded Bun: More Than a Runtime Swap
Simon Willison confirmed what Jarred Sumner hinted at — Claude Code now ships with a Rust-rewritten Bun embedded in every installation. The implications go beyond a faster JavaScript runtime.