The notebook

Four working examples—a PRD, roadmap, competitive landscape, and weekly status—make the case for useful product artifacts that behave more like software than static documents.

A practical framework for persistent context, project memory, CLI and MCP choices, reusable skills, subagents, and iterative build-and-verification loops.

An experiment across two synthetic-data regimes found that model rankings can reverse as available history grows—a reminder to test architectures at the scale where they must operate.

Most people use CoWork like a smarter chat. The teams getting real leverage build a workspace that explains how they work, so CoWork stops starting from zero every session. This is the path I walk people through — including the decision matrix, building blocks, and a set of hands-on exercises.

Five undergraduates built a bioartificial-liver digital twin in two semesters. The useful lesson was not about prompting; it was about decomposition, verification, and framing the problem first.

The quiet revolution in home cleaning. Every once in a while, a product comes along that doesn't just do its job better—it completely rethinks what the job should be. Matic is that kind of product.

For the past week, I tracked my iPhone Air battery usage down to the hour and the app. The results surprised me. While I expected social media to be the biggest culprit, it turns out my work apps quietly drained more power than anything else.