Low pipe stopped at dusk. High cistern overflow began the same night. Total collected rain unchanged. Place an arrow showing where you think the missing flow went. Try this: Trace a conservation-of-water explanation before choosing a repair.
One matching copper sleeve. Isolate cracked branch. Drain high excess to a cart. Fit sleeve. Reopen both balancing wheels equally. Mark each completed step in order. Try this: Assign separate isolation, drain, and repair roles and check dependencies.
Cart 1: empty tank. Cart 2: bread baskets. Cart 3: repair timber. One relief load returns a cart later. A distribution circuit reserves two carts through tomorrow. Cross out the deliveries your circuit postpones. Try this: Make the transport opportunity cost visible before spending cart tokens.
West branch: low-district crack. East branch: overfull cistern. Ground drain reaches service court. Inspection walkway stays wet until the cistern is relieved. Equal wheel marks belong to the repaired configuration. Try this: Choose an approach and trace a route that avoids the wet walkway.