Fable
Give the bronze hand a boundary map that can actually be executed
The coppersmith shop built a bronze hand that could move goods, open doors, and hand over ledgers. When it first started work, the master only said, “Help everyone save effort,” so the bronze hand moved whatever looked heavy, pushed shut any door it saw open, and put away any ledger it saw lying out.
On the first day everyone praised it for being diligent. On the second day, the apothecary shopkeeper came to collect urgently needed medicinal materials and found that the bronze hand had also moved boxes marked "not yet inspected" into the back warehouse, and had even handed the keys to a temporary assistant. No one could say exactly where it went wrong, because at the start it had been given only a vague goal.
The master added a rule: do not touch valuables. The bronze hand then avoided the silverware but carried a box of ordinary paper contracts outside the rain shelter. The paper contracts were not expensive, but the loss was more troublesome than the silverware. Relying solely on item price could not block the real risk.
The manager also had the copper hand ask people at every step. The shop immediately clogged up, and clerks lined up to answer "can this door be opened" and "can this ledger be taken." The effort originally saved was slowly eaten away again by fragmented questions.
Finally, the old accountant drew a boundary map of the whole shop's affairs: which matters could be handled directly, which required identity verification first, which amounts had to be approved by the manager, and in what order to handle conflicting instructions.
After the bronze hand returned to work, its movements were fewer but far steadier. It could handle low-risk chores on its own, and when it encountered paper contracts, keys, or unusual pickups it would stop and find the right person, rather than dumping every problem on the whole shop.
The shopkeeper understood that a helper who can do the work cannot be driven by a single wish. What is truly useful is an executable boundary: what is allowed, what is forbidden, when to escalate, and who bears the final decision.
A season later, a new night-shift worker tried to have the bronze hand fetch personal items for him. The bronze hand did not comply, nor did it silently freeze, but recorded the request and handed it to the duty manager. At that moment, the people in the shop saw that the boundary map was not just for preventing bad things—it also let a good helper know how to stay steady in gray areas. Later, when the shopkeeper hired new people, he first explained this map, then explained how capable the bronze hand was. Everyone knew it wasn't about obeying as much as possible, but about completing tasks within permitted boundaries. The clearer the boundaries, the more the shop dared to hand over real work. Without this map, the more capable the bronze hand, the more uneasy people felt; with it, the shop dared to let go of small tasks.