A.19.CN:2 - Problem

Absent a governance layer, four failure modes recur:

1. Chartless numbers. Measures move between teams without units, reference states, or declared normalization → illusory comparability.
2. Hidden normalization flips. Re‑parameterisations (e.g., normalising by batch size) silently alter meaning; trend lines lie.
3. CN‑frame sprawl. Every initiative mints a new “dashboard dimension”; semantics diverge; assurance collapses.
4. Un‑bridgeable reports. Cross‑team roll‑ups average incongruent CN‑frames, without a justified common comparison/aggregation model under B.3.