Mental modelThe app you didn't write · Day 18
The identity is written by a step that can be skipped, and the package ships anyway.
Share this diagram
Diagrams share as a link — it unfurls with a preview card.
This is one mental model — a course's idea in a single picture. It comes from The app you didn't write, a short daily course on Noesa. Anyone can use AI; few can tell when it's wrong.