Quality means conformance to requirements, not elegance.
The customer deserves to receive exactly what we have promised to produce - a clean room, a hot cup of coffee, a nonporous casing, a trip to the moon on goassamer wings.
Eliminating what is not wanted or needed is profitable in itself.
If you don't know what the defect level is, how do you know when to get mad?
It is not possible to know what you need to learn.
If we deliver on time, but the product has defects, we have not delivered on time.