#C.3.A:B.1 What you get with typed assurance [I]

Preface node heading:c-3-a-b-1-what-you-get-with-typed-assurance-i:34266

#Content

• Targeted proofs (VA). If a policy says “for every PassengerCar …” (notation hint: ∀x:PassengerCar), the VA lane now has a clear target. You can prove obligations once for the kind (and its subkinds), instead of re‑proving per ad‑hoc label.
• Subkind‑aware test plans (LA). Test matrices are indexed by subkinds (and RoleMasks) × context slices; coverage stops being accidental.
• Deterministic guards. A test/proof either applies to the TargetSlice and Kind (Scope covers & MemberOf defined) or it doesn’t. No “latest,” no silent widening.
• Clean tool boundaries (TA). You qualify the prover/model‑checker/classifier once and route tool confidence to TA, not to “broadened” claims.