OPS.8:10 - Rationale

Queue coordination works at the receiver’s service boundary and at the wider result boundary together. The first prevents dispatch of unusable inputs; the second prevents hidden waiting and local improvement from replacing the actual purpose.

Protection and concurrency control are therefore selected by their effects, not by a shared label or a management school. A cheap eligibility rule can be useful before a numerical buffer study, while a numerical guarantee cannot borrow that rule’s adequacy.