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Nominal Cost per Completed Outcome

The condition in which a favourable Cost per Completed Outcome figure reflects a narrowed definition of "completed" rather than genuine cost efficiency — the direct economic analogue of Nominal MTTI.

Extended Definition​

Nominal Cost per Completed Outcome is the condition in which a favourable Cost per Completed Outcome figure reflects a narrowed definition of "completed" rather than genuine cost efficiency — a number that looks like the architecture got cheaper when the architecture has not changed at all.

The term is a direct economic analogue of Nominal MTTI: the condition in which a long measured interval between required interventions reflects not genuine autonomous operation but a Steward who has stopped engaging with the audit surface. Both failure modes produce a number that appears to confirm the system is working while the thing the metric was designed to detect — expensive or unresolved cases — is quietly excluded from view. In Nominal MTTI, the exclusion happens because monitoring has lapsed. In Nominal Cost per Completed Outcome, it happens because the definition of the numerator or denominator has been adjusted after the fact.

Application​

Nominal Cost per Completed Outcome appears when the definition of a completed outcome is loosened after the fact to exclude the expensive cases: reclassifying a reversed transaction as a new task rather than a failed one, or counting a T2 escalation as resolved the moment it leaves the agent's queue rather than when the customer's problem is actually closed. Each reclassification shrinks the numerator's exposure to expensive cases and inflates the denominator, producing a Cost per Completed Outcome figure that looks like genuine efficiency while the underlying cost structure has not changed.

  • Cost per Completed Outcome — Nominal Cost per Completed Outcome is the failure mode of Cost per Completed Outcome: the figure looks favourable only because the definition of "completed" has been narrowed after the fact.
  • Nominal MTTI — Nominal Cost per Completed Outcome is the direct economic analogue of Nominal MTTI, producing the same kind of false-positive metric through definitional drift rather than Steward withdrawal.
  • Proof of Action — The Proof of Action ledger is what makes a reclassified or narrowed "completed" definition detectable, since it records the actual sequence of events behind the reported figure.
  • Audit Surface — A Steward reviewing the Audit Surface is positioned to catch the reclassifications that produce Nominal Cost per Completed Outcome before they compound into a misleading trend.
  • Escalation Rate — Counting a T2 escalation as resolved the moment it leaves the agent's queue is one of the specific reclassifications that produces Nominal Cost per Completed Outcome while leaving the true Escalation Rate unchanged.

Articles​

References​

  • Lexicon — canonical definition
  • Wiki — extended entry

Metadata​

First used: 2026-08-25
Pillar: How We Think

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