The delayed branch occupied both sides of the valve.
Felix looked from one sketch to the other.
He had drawn them minutes apart. Each had felt obvious while his pencil moved. Only one could match the actual pipe.
He put them side by side before either reached the next crew.
“This one is wrong.”
Jian pointed to the measured installation drawing.
Felix compared the junction, crossed out his mistaken route, and marked the reason instead of trusting a later tired reader to know which arrow he had meant.
“Will another hour of alternatives help?” Jian asked.
