The principles
Five rules, no exceptions.
Each principle closes a specific door that bad verification walks through:
- Black-box testing prevents false security from formulas that calculate but misbehave — inputs and outputs are tested, internals are never assumed correct.
- Scenario contracts turn testing into objective comparison instead of opinion.
- Maturity gating stops a one-week sample pretending it proves monthly or structural behavior.
- Source-of-truth routing forces every output to trace back to the correct truth layer.
- The error lifecycle — failure → register → fix → retest → close — forces disciplined repair proof instead of 'I think it's fixed.'

