Writing
First principles
My eval said 100 percent. The honest version said 70.8, and the ranking inverted. Six principles, one loop, and a worked example for choosing the models that drive your agents - plus what scoring state exams taught me about trusting an LLM judge.
read it →Field notes
A product team walks in with an idea and walks out, three hours later, with market research, a PRFAQ, a requirements doc, and a clickable prototype. The toolkit drafts each one; the room makes it right.
read it →Essay
Twenty years building software, four times a CTO, and I don’t write the code anymore. I notice friction, ask an AI to solve it, throw most of it away, and keep the few tools worth reusing.
read the essay →Field notes
A real Mac app that thinks like vim, renders like a technical journal, and exports like it works in an office. Nobody sells that, so Claude and I built it in six days - and the interesting parts are the failures.
read the build →Essay
The life and death of software subscriptions, seen from one house: a hand-me-down Mac mini, an AI companion, and the return of fixable things.
read the essay →Technical companion
Headscale on a $10 server, a fleet-native fork of Blink, mosh sessions that survive elevators, and claude -p as the whole RPC protocol.