Jason Suhari / Field Notes

NEW WRITING: MACHINE LEARNING SYSTEMS / FORMAL PROOFS / SIGNAL PROCESSING / WEIRD WEB EXPERIMENTS

A deliberately bad MS Paint drawing of cars, frogs, cats, ships, and horses entering an old computer while blue birds emerge after a red cursor changes one bit

Jul 22, 2026FEATURED FILE

I Flipped One Bit in a Neural Network Until It Developed a Favorite Animal

I flipped one exponent bit in a CIFAR-10 ResNet-20, turning 9,994 of 10,000 predictions into birds. Reproduce the 35,840-candidate search.

14 min readOPEN >

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A deliberately terrible MS Paint drawing of a tiny San Francisco where four fake commuters angrily score an orange billboard

Jul 22, 2026Advertising Technology and Simulation

I Built a Tiny San Francisco So Fake Commuters Could Roast My Billboard

Inside Orangeboard's 3D billboard simulator: 559 SF signs, traffic agents, saliency, OWL-ViT, vision models, heuristic scores, and honest limits.

20 min readOPEN >

A deliberately bad MS Paint drawing of Manhattan as a neon video game map, with tall purple buildings, a camera, a route, and a suspicious lighting switch

Jul 22, 2026Web Graphics and Geospatial

I Turned Manhattan Into a Video Game Cutscene With Mapbox

A hands-on Mapbox GL JS 3.26 review covering 3D cities, Mapbox Standard, lighting, weather, custom layers, performance, pricing, and MapLibre.

19 min readOPEN >

A deliberately bad MS Paint drawing of six terminal windows feeding into a heap of 130 yellow stars while a stick figure is dragged behind it

Jul 20, 2026Open source engineering

I Asked for Six Terminals. Thirteen Days Later GridBash Had 130 Stars.

I reconstructed GridBash's first 130 GitHub stars from commits, releases, traffic, and 209 Codex sessions to see what actually moved the curve.

19 min readOPEN >

A deliberately bad MS Paint drawing of five beige computers inside two overlapping colored circles, arguing over two sandwiches while a tiny theorem-prover judge stamps a ballot

Jul 20, 2026Formal verification

Can Two Majorities Order Different Sandwiches?

I used Lean 4 to machine-check a 3-of-5 quorum theorem, expose the assumption behind certificate uniqueness, and show exactly where the proof stops.

12 min readOPEN >

A deliberately bad MS Paint drawing of a smiling blue database wearing headphones inside a green and purple song waveform beside an old computer

Jul 20, 2026Audio signal processing

This Song Has a Database in It

I hid a complete SQLite database inside a 40-second song, recovered every byte from the WAV, and tested noise, clipping, mono, and low-pass filters.

15 min readOPEN >

A deliberately terrible MS Paint-style title card showing a complete website crammed inside a QR code

Jul 19, 2026Web experiments

Can an Entire Website Fit Inside One QR Code?

I packed HTML, CSS, and JavaScript into a 1,174-byte QR payload, decoded it twice, and ran the recovered website offline with zero HTTP requests.

11 min readOPEN >

A sweating cartoon banana presses one enormous red switch connected by tangled wires to an old computer showing a waiting one-eyed monster

Jul 19, 2026Accessible gaming

Can You Beat DOOM With One Button?

I built a real one-switch ViZDoom controller and ran 36 combat and maze trials to measure when auto-scanning works, and when the clock wins instead.

10 min readOPEN >

A deliberately terrible MS Paint drawing of a button walking under a tree that steals its name tag while a confused screen-reader robot waits on the other side

Jul 19, 2026Web accessibility

Where Buttons Go to Lose Their Names

I built a Chromium accessibility-tree failure zoo to see how visible buttons become nameless, misleadingly renamed, duplicated, or removed.

13 min readOPEN >

A clumsy MS Paint-style comparison of a harmless formatting button and a dangerous send button

Jul 18, 2026Agent safety

Some Buttons Are More Explosive Than Others

A consequence-aware control model for computer-use agents that need to know when to click, when to ask, and when to back away from the big red button.

9 min readOPEN >

Ten tiny coding-agent robots fighting over one laptop inside an oversized trench coat

Jul 18, 2026Agent operations

Ten Coding Agents in a Trench Coat

A practical systems model for running parallel coding agents with Git worktrees, explicit runtime ownership, immutable ready commits, and one short-lived integration lease.

10 min readOPEN >

Notes from the weird web.

I Flipped One Bit in a Neural Network Until It Developed a Favorite Animal

I Built a Tiny San Francisco So Fake Commuters Could Roast My Billboard

I Turned Manhattan Into a Video Game Cutscene With Mapbox

I Asked for Six Terminals. Thirteen Days Later GridBash Had 130 Stars.