ridiculous.

a large fraction of errors that turn up in QA are conceptual errors made by the development team; like the blind spot in the eye, you don't know what you don't know, and there are certain problems that you'll never find yourself.

Phil Crosby would say that management is responsible for quality; management writes the specifications and has the responsibility to hire and fire developers and QA people. The buck stops with management.

Efficient quality requires practices to be work correctly across the organization, but it starts in the specification process. If you don't know where you're going, you're sure as hell never going to get there.