A Green Lantern ring builds anything its wearer can picture and hold onto. An AI model works the same way: the ceiling is imagination and will, not the tool, and the essay is honest about where that claim runs out too.

A Mumbai auto charges 17.14 rupees a kilometre. The number traces to a living cost a committee settled on in 1996 without stating a method, indexed ever since. Rebuilding the formula from the record, and finding the one line in it that can be tested.

How one instruction set, one memory, and git as the transport turn two laptops, two CLI harnesses, and a phone into a single working system. Four diagrams, and the four things I have not solved.

A 3D character creator in the register of cast bronze crossed with cyberpunk. Pick an aesthetic register and a body plan, then work twenty-seven controls: height counted in face-lengths, the alloy and how far it has aged, four arms or six, seams and inlay at every joint. Nothing is modelled by hand; the whole figure is cut and assembled from a few dozen numbers.

A friend lost a fortnight to a true sentence about her café. Anyone can get an answer now, and almost nobody checks the question. Five rules for splitting a total so the parts still add up, with a worked example you can click through.

Critical reading notes on books about power, management, and institutional change. Substantial arguments, counterarguments, short quotations, and sources.

Most bad documents aren't badly written, they're badly ordered. A four-level method for writing, borrowed from how software architects describe a system: settle the message, then the structure, then the content, and leave the prose for last.

Two dozen mathematical animations (attractors, flows, curves, growth) morphing into each other on a half-hour cycle, with a generative ambient soundtrack that follows the mood. Sit back, or fiddle with the dials.

A weekly digest of long-form writing worth the time: ideas, science, art, design, history. Gathered automatically from around forty publications, chosen for range, never paywalled.

A drill-down data explorer for Google Sheets. Break any number down step by step, see trends at every level, and find out what drove a change. Works on a million rows.

A decade of American payments, charted: how cash, checks, cards, and instant rails traded places.

Brownian motion, drawn live in the browser. A small toy about randomness.

An MCP server that lets Claude manage tasks and lists in Checkvist.