Even though I would be frustrated by an aggressively "zen" approach of an instructor who refuses to explain, I would rather have that than an obviously mushy-headed explanation.
One thing you may not know, SkiingAround, is that as a group, Americans are unlikely to just follow an instructor or take his/her word blindly. In Europe, for a variety of reasons, you may be able to get away with just saying, "follow me," or "do this, because I said so," but that will rarely fly with many Americans--particularly early in the instructor/student relationship, before the instructor has earned the trust of the students. Like MDF, Americans (typically) want some justification for the things you tell them to do. "How will this help me?" "Why should I practice that?" "How is it relevant to my own personal goals?" "Why should I care if you think it's right--it's my money I'm spending here! What's in it for me?" Americans rarely give their respect or trust away blindly. You have to earn it. And the brilliant turns of a good-skiing instructor rarely impress American skiers, many of whom have little awareness of what a good skiing turn is, or looks like, in the first place. Skiing is not a national passion in this country, as it may be in some European countries. We often have to "sell" our students on the merits of good technique and effective drills (and rightly so).
That's not to suggest that an instructor--anywhere--should try to impress his students with long-winded monologues meant to showcase his brilliance and superiority. Far from it. No one likes a windbag. But our students have a right--and often a need--to know how what we advocate is going to be good for them
--as opposed to just "good skiing according to me." We have a saying in the U.S.: your students will not care how much you know, until they know how much you care." Simplicity and brevity are always welcome, but simple omission of necessary explanation or over-simplification to the point of inaccuracy will often backfire, costing the instructor the trust and respect of his students, making the students wary of any "advice" you may give them.
The instructor's credo should be: Keep it simple, not simplistic. And learn all you can, as broadly and deeply as you can, so you can keep it simple and clear and accurate for your students. It's a professional obligation, in my opinion, to develop as deep and accurate an understanding as I can, so that my students don't need to be bothered with all the dirty details.
And that's where forums like EpicSki can truly help. Here--not on the snow--is the appropriate place to test ideas, to analyze details, to clarify your thinking, and to broaden your understanding of the complex and (for some) fascinating cause-and-effect relationships of skiing. Here is where we can argue the fine points, so we don't have to do it on the hill!