Fable
The dispatch order for the three-story granary
The royal granary used to have the granary chief directly assign every porter. When the granary was small and the crew few, a single sheet of paper could manage the whole day, and the chief could see from the doorway where carts or sacks were short.
After the famine years, the granary expanded into a main warehouse, branch warehouses, and neighborhood distribution points. The warehouse manager still wanted to direct everyone personally, but by the time orders reached the street corner they were often already expired. The queue at the street corner was in an uproar, while the main warehouse was still approving whether a scale weight should be replaced.
He first added more messengers. The messengers ran faster, but they also brought details back to the central warehouse, and the warehouse manager was overwhelmed by bag counts, axles, and queue disputes. When the eastern district ran out of grain, the central warehouse clearly had grain, but was busy handling trivial matters at small distribution points, and no one escalated the real big problem.
The new adjutant divided the granary into three layers: the main granary decided quotas and risk, the sub-granaries arranged convoys and priorities, and the distribution points handled on-site queues and exception registration. Each layer handled only the decisions it could see clearly and be responsible for; across layers, only summaries, blockages, and exceptions requiring approval were uploaded.
The first version of the layered reporting did not go smoothly. The street corner reported "short by two carts of grain" as "anomaly in the east district," and the sub-warehouse thought the whole district was short, so the main warehouse almost diverted the west district's rations. The adjutant added a unified standard: quantity, time limit, scope of impact, and methods already tried must be written clearly; you cannot just shout that it is urgent.
At first some worried that layering would spiral out of control. The adjutant added unified metrics, permission boundaries, and an audit ledger: the lower layer could act autonomously but not exceed authority; the upper layer watched trends and did not grab detailed work; the sub-warehouses were responsible for aggregating small street-corner matters into dispatchable judgments.
Later, the granary could both quickly handle small matters at the street corner and uniformly adjust when disaster conditions changed. The granary keeper said that complex granaries need hierarchy, so that problems at different scales are solved in the appropriate place; small street-corner matters and citywide quotas cannot be squeezed onto the same table.
Later, when the warehouse chief inspected the neighborhood distribution points, he found that the lower levels handled small disputes much faster than he did. He did not take back authority; he only required that anomalies be reported in a standard format. The main warehouse finally lifted its head from trivial matters and saw the city's overall grain situation; the street corner no longer had to wait for a seal from afar before daring to move two bags of rice.