Figure 25.7 The queue triage and router. A single heterogeneous queue is classified and enriched,
then routed: some items are resolved on the spot, some are deferred, and the rest are escalated
to a person. The escalation route (in accent) is also the safe default—whenever the classifier
is unsure, the item falls onto that path rather than being resolved or dropped. The recipe is a
classifier at queue scale, with a person as its release valve.
