Writing

Ten weeks ago I made the first commit on my own AI brain: a folder of markdown pages, skills and scripts, run by Claude Code on an old MacBook at home. What it is, what I learned building it, and what it changed.

The wellness industry sells the tip of the performance pyramid, and four incentives make that the rational thing to do. Why health products detect and treat, wellness products measure, and almost everyone is still at the base.

One hour to find out how far an AI agent could get building a real app. Eight months later I still open the result a couple of times a week. What The Signal is, and what building it taught me about product work.

The most common thesis in healthcare investing is that the system is bloated. That's right, but the waste isn't sitting in a pocket waiting to be removed. It's wrapped around every critical function.

An interview with Pioneer Fund on how elite athletics training shaped my approach to building Circle Medical, from managing intensity to embracing uncertainty.