TvB - I respect your opinion and you preferring "the conventional approach". Having said that, all systems and how they operate are explained in great detail in the FCOM. Problem is, not saying that this applies to you in person, that a lot of pilots are simply too lazy to really dig in to the manuals and really, I mean really, learning how the systems work... I don't know how many times I have heard from colleagues that "ah, that's not something that's important to fly the airplane, just a bunch of engineering BS".
CP