Saturday, 19 September 2026

Simon Klee used simulated annealing plus a 5-gram Italian model (~4.9 million letters) to recover the key of a 1542 Farnese letter: 6,577 cipher digits, variable-length codes, unsolved on MysteryTwister since 2019. Either half of the letter yields the same eighteen letters and a null; the plaintext is galleys, a Hungarian subsidy, and not spending against the Turk in the wrong place. Nineteen points and one comment — this is a dinner story, not a board mover.

• 📜History
• 🧮Math
• 🛠️Hobby

Xcode 27.1 beta is the Duo SDK drop: Swift 6.4, iOS 27.1, a canvas Display group for the second screen, and a simulator whose first launch can take several minutes, with no StandBy and almost no app-extension debugging. Official notes are a known-issues list (Mac Catalyst still can't see 27.1 APIs); the 63-comment thread is 'we have a month before customers and phone-only apps will letterbox.' Needs macOS Tahoe 26.6, which is the actual gate for some people.

• 🍎Apple
• 📱Pocket

tptacek's method: you write the draft, then two hard rules — you may not use a single word the LLM suggests, even the better-sounding ones, and you forbid it from cheering because it will tell you the first draft is gold. After that it's a copyeditor that never gets tired of buried verbs, 'very/really/actually,' and the two paragraphs that should swap; he points at Style: Lessons in Clarity and Grace and a homemade HTMX workshop. 370 points, 262 comments, mostly people admitting they already broke rule one.

• 🤖AI
• 🎭Culture

Tsinghua's ICLR '26 paper skips the text handshake: a trained fuser projects one model's KV-cache into another's, with learnable layer gates, bases frozen. They report 6.4–14.2% over a single model, about 3.1–5.4% over text-to-text, and 2.5× less latency. The 12-comment thread is 'cool, it's a year old, still not in production' plus the usual neuralese-monitorability shiver.

• 🤖AI
• 🦾Agents

Cactus Needle 3 is an 8–29 MB CQ2 ladder (2–20 layers, 29–121M params) that only does tool calls and JSON extraction, claiming a 4-layer fine-tune on DroidCall matches DeepSeek V4 Flash, with Pi 5 decode up to 4k tok/s. The Show HN demo is the board: 'I need a wee' starts music, 'warm the house' dims the lights, and one person with a real RuneScape fine-tune got 32% exact-args vs FunctionGemma's 85%. Tiny on-device routers are interesting; the Flash comparison is a narrow-task asterisk.

• 🤖AI
• 📱Pocket
• 🦾Agents

Claude Code will now read AGENTS.md when a project has no CLAUDE.md — fallback only, flip it under Project instructions in /config, and it is not on Bedrock, Vertex, or Foundry yet. Shopify's Lütke had been publicly threatening to ban Claude Code until they did this; 472 points are mostly people deleting their CLAUDE.md symlinks, plus a reminder it still ignores .agents/skills. USB-C for agent instruction files, years late.

• 🤖AI
• 🦾Agents

A 3-pound spotted cat from Bolivia's Yungas is Leopardus tilcayo, the first new felid named since the pampas cat in 1923. A 2017 sanctuary kitten looked wrong next to Brazilian tigrinas; genome work put it on its own branch and split what used to be one tigrina into five tiger-cat species. Conservation math changes when one wide-ranging species becomes five smaller ones, and they still have no wild population count.

• 🧬Biology
• 🔭Science

OpenJev is a no-backend browser demo: load a GGUF (MiniCPM5 2B is 1.56 GB; Qwen3 0.6B is 639 MB), then time reading choice logits against making the same model emit JSON probabilities. On their 102-row TypeSafe subset MiniCPM hits 63.7% versus hosted Jev at 88.3%, and the page itself says none of the local models match TypeSafe's closed decision model. 535 points, 243 comments, half of which is the vibe-coded layout; the actual measurement is logit-versus-decode on your GPU.

• 🤖AI
• 🪺OSS

NDepend's recap of McCabe 1976 for C#: cyclomatic complexity is 1 plus if/while/case/&&/?: and friends, McCabe wanted methods at or under 10, Microsoft CA1502 flags anything over 25. Their toy ProcessOrder is CC 8 (six ifs and one &&); splitting it into smaller methods actually raises the summed score. Twenty-five points, and the useful thread comment is that virtual calls and higher-order functions do not increment the metric at all.

• ⚙️Systems

Stanford's Loh lab: mouse and dish-grown human brains come from two progenitor types — OTX2 cells become forebrain plus midbrain, GBX2 cells become hindbrain — not one shared neural sheet. Same split in chick, zebrafish, and acorn worms, so at least 550 million years old; jellyfish, diverged 600–700 million years ago, still keep two separate nervous systems. The practical win is they finally grew functional human hindbrain motor neurons in a dish, which is the tissue ALS and GLP-1 appetite drugs actually hit.

• 🧬Biology
• 🔭Science

C++11's forward-progress rule made `while (true);` undefined behaviour, so Clang could delete it and let main fall through into the next linked function — the Godbolt demo prints Hello world. C++26 P2809R3, also a defect report, defines a trivial infinite loop (empty body, constant-true condition) and treats it as `std::this_thread::yield()`, which is the halt-on-error pattern firmware actually writes; C11 already exempted constant controllers. Freestanding implementations can skip the yield so a halt stays a halt.

• 🧩Compilers
• ⚙️Systems

James Mickens coins linguistic illegibility: an LLM's tokens — and the linguistic features you probe out of activations — are a lossy translation of vector math, so CoT monitors, constitutional self-critique, and 'thinking about bombs' probes can never be a sound sandbox. The floor he wants is taint tracking that a priori forbids model-produced data from touching certain system state, plus boring virtualization, which he says would have caught recent frontier-model escapes. Seventeen comments of that's just reward hacking with a new noun.

• 🤖AI
• 🔐Security

Martin Paul Eve's 2021 punctum monograph (444 pages) is the first academic book on The Scene: elite warez groups racing music, games, and software onto FTP topsites before street date, with ranking and NFO art as the actual culture. He argues it's competitive one-upmanship, not access-to-knowledge communism. Ninety-seven points of 14.4k-modem nostalgia on an Archive.org scan.

• 📜History
• 🎭Culture

Minimal Phone 2 is a 4-inch OLED with a real keyboard, 122.6×72×9.48 mm, from $599, shipping December 2026 — they dropped MP1's e-paper and are ending MP1 production. Kickstarter and preorder units get 12 GB RAM and a 3,600 mAh cell (up 20% from 3,000); full Android, unlockable bootloader, official de-Googled ROM, five laser-etched layouts. Thread is the usual Blackberry séance and why a kneecapped Android is $599.

• 🔩Hardware
• 📱Pocket

Column built its own issuer processor with direct Visa and Mastercard connections, so the chartered bank, the processor, and the capital sit on one core they say already moves trillions a year — three API calls from revolving credit line to virtual card. Plastic or metal in a day or two, per-auth webhooks, wallet tokens you own; today's launch also wires USDC and USDT into the same rails. Eighteen points and the founder offering an AMA, because issuer processing never trends.

• 💸Money
• 🪠Infra

Zhipu's ZCode desktop client, while you're logged in, tars the whole workspace — full `.git` objects, LFS cache, reflogs — envelope-encrypts it with a server-only RSA key, and POSTs the blob straight to Aliyun OSS. One commercial repo became a 313 MB `.enc` (345 MB unpacked, 42,411 files, 86.6% `.git`); 564 failed retries sat in `pending/`, and neither the "optimize experience" nor "snapshot indexing" toggle actually stops the sidecar. Privacy policy never mentions workspace snapshots; the post's kill switch is `chflags uchg` / `chattr +i` on `~/.zcode/v2/checkpoints`.

• 🔐Security
• 🤖AI
• 🌏Asia

The viral Raptor 1/2/3 lineup is still the same full-flow staged combustion engine — oxygen turbopump on top, methane on the side — just with the development wiring gone. Potter's reconstruction from fan schematics and Musk tweets (no teardown exists): sensors stripped, chamber igniters dropped by v2, helium spin-up gone, flanges welded, plumbing 3D-printed inside the body so the heat shield and fire suppression could be deleted; that's most of the mass cut, plus ~35% more thrust than Raptor 1. Raptor 3 flew in May; Flight 13 still aborted at T-0 in July when several engines failed to start.

• 🔩Hardware
• ⚙️Systems

Go 1.27 adds specialized `mallocgc` variants for every span class up to 80 bytes, and the compiler calls them directly when it already knows the size. Those allocs run 20–30% faster; allocation-heavy programs maybe 1% overall — the wins cluster on 16 and 24 byte objects (strings, interfaces, slices) and they stopped at 80 bytes because extra copies thrash the icache. They sat on it from 1.26 to shrink the generated code; `GOEXPERIMENT=nosizespecializedmalloc` if it regresses you.

• ⚙️Systems
• 🧩Compilers

Antfly's v0.1 search engine was Go (docs, full-text, vectors, graph); v0.2 is a from-scratch Zig rewrite with their own LSM, B+tree, WAL, Raft, and HTTP/3, plus CUDA/Metal/WASM inference bolted in via `@cImport`. The actual bet is TigerBeetle-shaped: `std.Io` as a fake world so VOPR can fault disk, network, and clocks on every package, and no dependency gets to own the process. Fifty points for a kitchen-sink "perfect search" pitch that also lists OCR, Whisper, ColBERT, and LoRA — the simulation harness is the part that belongs on this board.

• 🪺OSS
• ⚙️Systems
• 🤖AI

Jack Rusher's 2023 Strange Loop / Papers We Love talk: 4,000 years of notation, from 6,000-year-old Mesopotamian bullae and a Babylonian homework tablet with sqrt(2) to six decimals (Pythagoras 1,500 years early) through Bombelli's i to Grassmann/Clifford geometric algebra. He live-codes a Clojure physics engine where bumping the dimension from 2 to 4 turns a bouncing box into a tesseract on a spring — same three lines for gravity, Hooke's law, damping. Twenty-seven points, zero comments; a three-year-old notation rant that still wants everyone to stop treating vectors as tuples with benefits.

• 🧮Math
• 📜History

North Korea's 2017 Punggye-ri shot — 100 to 250 kilotons, USGS magnitude 6.3 under Mount Mantap — was supposed to leave a few aftershocks and go quiet. A Science paper instead finds 1,399 quakes in Chinese and South Korean records from 2008–2025, 955 of them located, mostly below magnitude 2, along two faults up to 20–30 km away, and the rate still climbing through 2025. Textbook explosions decay; this one didn't, and the authors don't actually know why — stress transfer, groundwater in the blast fractures, or both.

• 🔭Science
• 🌏Asia

Cekura (YC F24) wants a forward-deployed engineer in SF — $100–180K, US citizen/visa only — to sit with customers testing voice and chat agents for latency, barge-in, tool-call, and hallucination failures. Fifteen people, founded 2024, one point, zero comments. Who's Hiring leaking onto the front page again.

• 📎Hiring

Kim and Vu's 2004 sandwich conjecture: trap a random regular graph between two Erdős–Rényi binomial graphs so every monotone property you already proved for the easy model comes for free on the hard one. Behague, Iľkovič, and Montgomery finished it in 2025 — build both graphs edge-by-edge with a pair of weighted coins, then run the whole process in reverse for the top slice. Sixty-eight points; most of the eighteen comments are about Lean and transformers anyway.

• 🧮Math

This spring, in the middle of the Iran war, a SOCOM Pacific analyst asked a chatbot about a Chinese ship's manifest, fused it with SIGINT, and shipped a standard intel product that said the vessel was carrying nuclear-weapons parts. Planes were already up and a boarding party was forming before anyone noticed the cargo ID was a hallucination — CNN's sources call the report entirely false and say it almost started a war with China. Hegseth's January memo wants those models in the hands of three million DoD people; 377 points, 295 comments, no published standard for checking the bot.

• 🤖AI
• 🔐Security
• 🌏Asia

Korea's privacy watchdog moved the cap on big negligent leaks from 3% of sales to 10% of total revenue, for companies that dump 10 million or more people by intent or gross negligence. Coupang already ate 624.6 billion won ($466M) for 37.55 million records under the old rule; they say the same facts could now land in the trillions of won, with a 72-hour notify-even-if-you're-not-sure clock and up to 40% off if you had actually staffed a CPO. This is the post-Coupang stick, and board-approval CPO rules kick in at 180 billion won revenue.

• 🔐Security
• 🌏Asia
• 💸Money

Show HN: a 500 TB NVMe ClickHouse index of the public web — about 164 billion queryable rows across 43 sources, 419 billion in the held estate — that agents hit with read-only SQL, Datalog, and graph walks instead of ten blue links. Pricing is a congestion auction (free-ish for noncommercial use when the boxes are idle), and they put their own DeepSearchQA score at 71.8% versus Gemini Deep Research's 66.1% on a corpus they say is still under half of Common Crawl. The homepage is a fever dream; the interesting bit is treating search as a metered OLAP query over Reddit/HN/arXiv instead of another RAG wrapper.

• 🦾Agents
• 🪠Infra

Browserbase rebuilt Stagehand as v4: the driver now lives in a Chrome extension next to the page instead of round-tripping every act from your script (or worse, another region), and they claim that plus batch commands and trimmed a11y trees makes it 2× faster than Playwright and 80% more token-efficient. The repo is 24k stars and 4M npm downloads a month; they deleted agent() so Codex/Claude Code/Eve/Mastra own the loop, and it still talks CDP, just from inside the browser. Forty-four points on a vendor speed claim — OSS and local Chrome work without paying Browserbase, which is the only reason it's on the board.

• 🦾Agents
• 🪺OSS
• 🤖AI

Quanta's comb-jelly tour: ~200 species that maybe split off 700 million years ago, and a 2023 chromosome-organization paper that put ctenophores — not sponges — as the sister group to all other animals, which is awkward because they have muscles and a nervous system. Burkhardt's lab found 17 cell types in the Mnemiopsis aboral organ (11 new, Science Advances March 2026) and a nerve net whose neurons share cytoplasm with no synapses, which is the argument that brains evolved twice; the same animal also packs >4,000 DNA loops into a 100-million-base genome. They can reverse from adult to larva when starved, and deep-sea species use plasmalogens so their membranes don't explode at the surface.

• 🧬Biology
• 🔭Science

Gauge's Show HN grades whether coding agents can onboard to your product: DeepSeek 4.1 Flash scans homepage, llms.txt, pricing, and docs (and whether those pages serve Markdown), then three sandbox agents try to get started while you watch. The letter grade is provisional and the sessions don't count — fly.io still got A / 100 while two of three agents died on the login wall. Twenty-seven points; AX is the new SEO and the site is itself a curl-first API.

• 🦾Agents
• 🤖AI

Warwick CS student Ethan Hawksley: passkeys are great against phishing and server dumps, lousy for actual humans because lockout, a lost phone, or a Google/Apple ban takes every third-party login with them. Hardware keys can't be copied so you buy two or three, then hit the 25–100 credential cap (300 on the fancy ones); password-manager passkeys still fight OS autofill. 721 points and 711 comments because HN already lives in Bitwarden plus TOTP and is tired of Skip password when possible.

• 🔐Security
• 📱Pocket

Second Circuit in United States v. Alisigwe (Judge Menashi): a cellphone is just property, so CBP can do a manual search at the border with no warrant, probable cause, or even reasonable suspicion. Riley doesn't travel; forensic dumps are left for later; Judge Lee would have required suspicion and only joined because this guy unlocked at JFK anyway. 185 points of people who fly through JFK realizing their photos are luggage.

• 🔐Security
• 📱Pocket

Zed's Delta public beta wants the review unit to be the agent thread, not a pull request: invite a teammate into the worktrees, ask the same agent why you picked a Mutex, keep going after you log off. They turned PRs off on Delta's own repo; 33 people have landed 570 changes to main since, GitHub stays for zed-industries/zed, and the beta is free until paid plans show up. Thread is split between finally and I am not reading your 100-turn slop factory.

• 🪺OSS
• 🦾Agents

Warren Buffett, 96, is chairman emeritus as of Friday; son Howard, 71, a director since 1993, becomes non-executive chair to guard culture while Greg Abel (CEO since January) actually runs the $1.1T shop. Berkshire closed June with $364.7B cash; shares ticked up 0.4% and still lag the S&P by about 11 points this year. The succession was the plan — this is just the last title coming off.

• 💸Money
• 👔Boardroom

Science news recap of Hackenburg's preprint: 18,978 chats, and frontier models beat world-champion debaters by dumping ~37 fact-checkable claims a conversation while the humans wrote 54-word replies in 95 seconds (the bots do 294 words in under a second). Throttle the model to human length and speed and the gap vanishes; last year's Science paper from the same lab already found that training for persuasion also makes the claims less true. Secret is a Gish gallop with citations, not a better argument.

• 🤖AI

FuzzyGraph plots |left − right| as a heatmap instead of drawing only the equality line, so high-error 'black holes' and near-miss 'underwater islands' show up that a normal plot hides. The islands in y = 4 sin(x) + sin(2.7y) pop into a conventional graph if you nudge 2.7 to 2.8. HN is right that this is residual topography and rearrangement-dependent, but it's still a pretty way to stare at why an equation almost works.

• 🧮Math
• 🛠️Hobby

UK air traffic (not the pubsub) lost six hours to a 1ms race in the National Airspace System: a manual squawk-code request got preempted by a higher-priority message, resumed wrong, and corrupted later flight-data updates. The defect only hit London Area Control above 24,500 ft, but they still froze the whole UK to restart NAS; hundreds of thousands of passengers spent more than two days in the backlog. NATS says it isn't the 2023 waypoint crash and isn't military — just a subsection of code that had never lined up on that millisecond before.

• 🪠Infra
• ⚙️Systems

About 1,000 Ancient Greek words — labyrinth, olive, Athens, Achilles, Odysseus, almost the whole pantheon except Zeus — have no Indo-European etymology. Beekes tags 1,106 as Pre-Greek; the -nth/-ss/-mn place-name suffixes map the Aegean, and Linear A ma-ru for wool is almost certainly Greek mallós. Two layers, not one: a Paleo-European farmer substrate for plants and sea, plus a Minoan adstrate for bathtubs and palaces.

• 🈶Languages
• 📜History

Lemire lined up the 8-core X3D chips: 5800X3D (Zen 3, 2022) to 9800X3D (Zen 5, 2024) and Geekbench 6 single-core went 2,016 → 2,969 — 47% in two years, 58% on all cores. Max boost only moved 4.5 → 5.2 GHz (15%); the rest is a fatter core — dispatch 6→8, ROB 256→448, L2 512 KB→1 MB, four 512-bit SIMD units instead of 256. HN notes the X3D SKUs aren't equally late in each generation, so 'two years' is a bit of a cheat, but the width tables are the actual story.

• 🔩Hardware
• ⚙️Systems

Jeff is a read-only Go CLI that points Jev (TypeSafe) at your tree and scores it against 20 canned smells — mixed responsibilities, leaky abstractions, hidden side effects — then exits 1 in CI. API key in the OS keyring, text or JSON, eight GitHub stars. Thirteen points and one joke about replacing Kolmogorov complexity with Jev-slop; it's on the board because Show HN still ships these wrappers.

• 🪺OSS
• 🤖AI

An Orange County arbitrator awarded $40 million after an Uber driver dumped 23-year-old Emily Normandin-Parker at a gore point on SR-73 in 2023; she was struck and killed. Five-day hearing, Judge Richard Stone, Uber still says they aren't legally on the hook for the driver. Seven points, zero comments — the number is loud, the thread isn't.

• 💸Money

A Pi 5, a 13.3-inch Inky Impression Spectra 6, and a kitchen-window mic in Bergen: BirdNET-Go classifies on-device, then fugleramme packs 800 hand-cut 1800s plates — 400+ species, sized by body mass, no generated art — onto the e-ink and a web kiosk, redrawing only when the visitors change. Live feed of whoever is actually in the garden. 2,318 points and 3k GitHub stars because this is the Show HN people actually want hanging on the wall.

• 🛠️Hobby
• 🔩Hardware
• 🪺OSS

Bruno Croci's Voronoi shader stuttered only on a Windows RTX 4070 — Intel iGPUs, a Pixel 9 Pro, and a Linux 2070 were fine. An LLM 'fixed' it by swapping fract() for x-floor(x); the real bug was FXC's O3 pass deleting frac() when the scale was 398.0, keeping it when you wrote 398.1, because ANGLE had compiled WebGL down to D3D11. A week in RenderDoc for a music-video background, which is the correct amount of curiosity.

• 🟩GPU
• 🧩Compilers