Fable
Four colors of passage badges, letting the mechanical apprentice know where it may go
The workshops of the cities of Haixi all loved to make bronze vessels that could handle affairs. Some could only give guests directions, some could dispense medicine for pharmacies, and some took part in apprentice admissions and dock passage. In the early years each city managed its own, and caravans selling vessels across borders were often stopped.
The South City craftsman felt wronged: my bronze ware only helps people go faster, so why must it be re-reviewed in North City? The North City official retorted: if it determines who can enter school, who can receive medicine, who can pass the checkpoint, who is responsible when something goes wrong? The two sides argued for a long time.
The alliance initially wanted to issue one unified license so that all bronze credentials would be accepted. Trouble soon arose: toy bronze birds and pharmacy sorting bronze hands were inspected under the same standard, so light ones were slowed down while heavy ones were not checked enough.
Later the council switched to four-color cards. Harmless toys needed only basic labeling; ordinary administrative brassware had to state its purpose; high-risk items involving healthcare, employment, education, and passage had to have testing, records, human review, and an accountable person; and a small number of uses that could harm rights were directly prohibited.
At first the craftsmen resented the weight of the rules. It was only when a bronze vessel was wrongly rejected from an apprenticeship because of an old prejudice that the city could trace the training source, the inspection method and the responsible firm along the records, and everyone finally admitted that the grading was not just for show.
The cities of Haixi finally learned to trust one another. The council understood that governing machines that handle affairs cannot depend only on how smart they are; it depends on what scenarios they are placed in, whose rights they affect, and what obligations and boundaries are required.
Some craftsmen later learned to choose the scenario first and then make the object. The same bronze vessel that can sort things carries completely different responsibilities in a toy shop and in a pharmacy; likewise, recommendation can recommend books or recommend loans, and they cannot be viewed under the same color.
The four-color cards removed much of the ambiguity from sales. Customers no longer only heard "faster and smarter"; they asked about risk levels, record-keeping obligations, human review, and exit options. What the alliance wanted was not to shut down bronze production, but to make uses with greater impact carry clearer responsibilities. Later, craftsmen found that clear grading actually helped them close deals. Customers knew what obligations the items they bought required, and did not wait until something went wrong to argue about responsibility. The rules became the foundation of cross-city trust. The clearer the grading, the less cross-city use relied on ad hoc arguments. Caravans were also more willing to buy items whose card color and responsibilities could be clearly stated, rather than only hearing craftsmen boast.