The mechanism

The one thing. Proof that the rules hold can be made by private people, one published record at a time.

A fridge by a Swiss country road with its door open: cheese, milk and eggs inside and a cash box on the post beside it
"A farmer can leave eggs and cheese in a fridge by the road, with a box for the money and nobody watching, and still be paid." The book, Introduction. Illustration created with the help of AI.

The 15 ideas