Field notes 9 pieces

Stories in data.

Visual essays on language, public data, and the things worth counting — plus the tools to go digging yourself.

By Joseph Kato — creator of Vale, a prose linter downloaded nearly ten million times and used by Microsoft, GitHub, and GitLab.

Analysis / / 4 min read Latest

The hedge words of science

Scientists are trained to qualify their claims. Across 2,400 arXiv abstracts, how much a field hedges turns out to track something simpler than caution — whether it observes the world or proves things about it. And despite the reputation, hedging isn't on the rise.

Analysis / / 10 min read
01

AI Tells: the burden of LLMs

Codeberg's members just voted to ban vibe-coded projects, which is one way of saying the question has stopped being rhetorical. I build a prose linter, so I pointed it at a decade of GitHub instead — and the load turns out to be real, to land on pull requests rather than issues, and to look nothing like the tells everyone repeats.

Interactive / / Police data
02

OpenPDI

Use-of-force incidents and officer-involved shootings from U.S. police departments, standardized into one schema.

Interactive / / MapLibre
03

Buoywatch

Every station the National Data Buoy Center reports, live on one map — filterable by program and owner.

OceansLive data Open tool
Analysis / / 5 min read
04

Who does the talking

At Supreme Court oral argument the justices share a fixed hour, and they split it about as unevenly as they split anything else. Six terms of transcripts show who spends the Court's time, who barely does, and the newest justice who out-talks them all.

Analysis / / 5 min read
05

The whistle they didn't blow

The NBA grades its own officiating in the final two minutes of close games and publishes the results. Eighty-nine thousand graded calls later, the errors have a shape — and the question everyone wants answered turns out to be the one the data is worst at.

SportsOfficiating With explorer
Analysis / / 5 min read
06

Where Wikipedia fights

Wikipedia has no editor-in-chief; disputes end when someone hits undo. Read the last five hundred edits of its own most-contested articles and the map of where the reverting runs hottest is not the one the culture wars would draw.

Analysis / / 4 min read
08

Tombstone.js: A propositional logic library

A library for evaluating well-formed formulas, built to find out how much of an introductory logic course automates cleanly. Written in 2016; the demos here run the real parser.

JavaScriptLogic With explorer