Curiosity,
with footnotes.

HOW TO USE THIS SHELF

A field guide, not a final answer.

Each guide starts with an everyday question, builds a small mental model, then points out the assumptions hiding underneath it. You do not need specialist equipment or a particular background. A notebook, a curious question, and a willingness to check your assumptions will do nicely.

Some subjects have more than one guide. The solar trail goes from the basic energy math to evaluating a real roof and then thinking about storage. The network trail follows data from a browser to a home network. The other guides work as standalone introductions.

Looking for a different rabbit hole? Explore the five new reading rooms, with 15 guides in each.