Planning and tooling are suitably designed for execution. That's why they fail to decide on the resulting coding accuracy. If the product is user-facing (i.e. a

Planning and tooling are suitably designed for execution. That's why they fail to decide on the resulting coding accuracy. If the product is user-facing (i.e. all products), a blind verification harness that is specifically designed to behave like a real user should be the decider.