The Casebook.

Daily lessons are bumper stickers. A corpus is a map. Every lesson here was filed on a real day, about a real event, and lives until the tape proves it wrong. Some are foundational. Some build on others. Some get broken by a market that refused to cooperate — and when that happens, we mark them broken, file a better one, and keep the original visible so you can see how the thinking evolved. That's the moat.