principle-prove-it-works
Apply after completing a task, before declaring done. Verify against the real artifact (run the feature, read the actual value, inspect the diff), not a proxy, self-report, or 'it compiles.'
Pinned to revision af6ee0013b6e, so it is the text this page describes rather than whatever the author pushed since.
Files
Every link opens the file at its source, pinned to the revision this page describes.