Fable
Apprentices self-check according to the rules first, then hand it to the master for review
The document shop in town had to reply to a large volume of letters every day. The old proprietor couldn't review each one personally, but new apprentices often wrote rejections too enthusiastically. The proprietor first arranged for a master to revise each one. It worked well, but as letters increased, the master couldn't keep up, and even low-risk minor errors consumed human effort. He then posted safety slogans on the wall. The apprentices memorized them well, but when actually writing letters they didn't know which principle should override which: help people, but keep secrets; be polite, but don't forge credentials for anyone.
Later the manager wrote a small charter. It didn't list specific answers, only principles: do not leak private messages, do not forge credentials, do not make unauthorized promises, state uncertainty, and when a safe alternative can be provided, don't just coldly refuse.
After writing the first draft, the apprentice first self-checked against the charter: where did it help too much, where did it refuse too bluntly, where was reasoning missing, and where did it need a master's review. The second draft was then revised according to the self-check comments.
At first some applied the charter mechanically and turned away every sensitive letter. The shopkeeper took out a few sample letters and explained: the charter is not a shield for dodging work; it must keep help within principles.
After several rounds, the master only spot-checked the hard-to-trust cases and added new conflict cases to the charter lecture notes. The document shop could handle more incoming letters, and the applicable definitions and criteria became more stable.
The first version of the little charter was not perfect either. Following the rules, the apprentice refused many letters that could have been safely helped, and customers felt the document shop had turned cold. The shopkeeper added a few more examples: you cannot forge documents for others, but you can explain the proper path for supplementary certification; you cannot leak private letters, but you can teach people how to check public notices themselves.
Every night the apprentices gathered around the little charter to review each other's letters. Some pointed out that a companion was too arbitrary; others added safer alternative wording. The master only spot-checked the hardest letters. The document shop did not cancel manual work; it first let the apprentices learn to self-check according to principles, leaving the master for truly tangled places. Later, the shopkeeper found that the clearer the charter, the more the master could reduce repeated small mistakes and handle truly dilemma-filled letters. The shop's reply speed did not spiral out of control, and the boundaries did not rely on each master's memory on the spot.
The old shopkeeper said the best rules don't write the answer for every letter, but teach the letter writer to examine their own answers using principles.