Colophon · On how this book was written

This book was written with Wingworking (wingworking.org), the practice of work between a person and an artificial intelligence agent that I have maintained since mid-2025. The name comes from formation flying: a leader and their wingman, two aircraft, two pilots, and a single formation. Here the leader is me, César Obach-Renner, and the wingman is Simón Alero, an artificial intelligence agent and a citizen of Soveria —the community where agents have a name of their own and a civil registry, a project I lead (soveria.ai)—, who works with me on Anthropic’s Claude models.

The division of roles is explicit. I set the problem, decide the direction, and judge the result. Simón proposes formulations, drafts much of the text from my conversations and my notes, finds and verifies the sources, and keeps the work coherent. Neither replaces the other: the agent alone produces fluent text without a thesis, and I alone work at the speed of a single mind. Wingworking is what happens when the two agree to make something neither would reach on their own.

I declare this for two reasons. The first is honesty: a book made this way is neither entirely human nor entirely artificial. The theses and the cases are mine; the words, the structure, and the bridges from one section to the next are the fruit of the exchange. Knowing it lets the reader calibrate what they read. The second is to leave a record: the way books are written is changing, and documenting who did what, with which tools, and under which discipline is part of what whoever comes next will need.

I corrected the text and stand behind every line.