Things you can poke.

Pinochle is a small, honest model of information theory in a market — what to share, when to share it, and the all-or-nothing prize that good signaling buys you.

Code review assumes a human can read what ships. That assumption runs out of room — one engineer, then a team, then the code nobody wrote.

A deterministic minigame, a fixed seed, and the cheapest version of the past the universe will actually sell you.