Fable
The workshop first writes down clearly the input and output of each process step
The woodworking workshop was taking on more and more orders. The front desk listened to the customer's description, the draftsman produced a sketch, the materials room prepared the boards, the craftsman cut the mortises, and the accountant estimated the schedule—each step had to catch the one before it.
In the early years, everyone relied on verbal handoffs. The painter said "make a sturdy table," and the materials room guessed the dimensions; the accounts room heard "as soon as possible" and guessed the delivery date. While the workshop was small, these guesses could be patched up through familiarity.
As new customers increased, misalignment happened frequently. The materials room received a story but did not know how many boards were needed; the craftsman got a beautiful sketch but could not see the load-bearing requirements; the accountant was still asking about wood type when estimating.
The manager first wrote longer handoff notes, and the more he wrote the more they read like long letters. But the long letters still mixed wishes, constraints and results, and the next person had to fish out what they needed from within.
The new manager required a small sign at the door of each process: which fields are accepted, what each field means, what the output should look like, and what must be returned if missing.
Once the sign was hung up, it was no longer frightening to change people. The materials room knew it only took dimensions and wood type, and the accounts room knew it had to get quantity and delivery date. The workshop finally turned the craftsmen's tacit understanding into a transferable contract, and the later polishing had a solid starting point.
Once, a newly arrived craftsman wrote "as light as possible" out of old habit. The materials room did not know how light that meant, and the accounting room did not know whether a price increase was possible. Only when the semi-finished product was made did they discover the customer wanted ease of carrying, not thinner table legs.
From then on, vague language couldn't flow straight to the next step. If dimensions were needed, write dimensions; if limits were needed, write limits; if results were needed, write results. The workshop didn't talk less like a human—it just nailed down in advance the places that would cause misunderstanding. Later, when newcomers started, the old masters no longer began with abstract categories but had them review that failure: where intuition had been relied on before, why the first fix wasn't enough, and how the new arrangement kept risk in a place that could be checked. Only when they could explain these details clearly—and point out when to keep using the approach and when to upgrade it—were they considered to truly understand it. Later they also had newcomers rehearse the approach: first have them do it the old way and see how errors appear; then redo it under the new rules and see which step gets blocked in advance and which step leaves evidence. Newcomers who can only recite names will still misuse it in similar scenarios; only those who can state the applicable boundaries, the costs, and the remedies after failure are allowed to take on work independently.