results that no other means can achieve. Sorry, but this is very managerial in nature!
All in all, the technical without the managerial won't get you any quality at all. Rather, it will sometimes get you the wrong quality (the one your customers won't pay for). If technical people and managers see themselves as separate, parochial entities, the software, let alone the quality, is in trouble. You cannot test it in (alone), and you cannot manage it in (alone), but certainly it won't go in by itself or by pure chance. So you have to integrate
efforts and wage war both on the technical and managerial fronts.
To conclude with a piece of personal experience: I recently ran a testing course at the software shop of a large Japanese automotive company. The shop supervisor--a senior manager of the place--attended the whole course very diligently, and you know what? He was the best one at the testing exercises!