P.S. if I knew how to post links to other threads, I would do that, but I never got around to kearning that...will someone either post instructions here, or PM me?
Rotation, arm weight these things should come naturally. If a teacher has to tell you how to do it you won't learn it. It is like trying to explain how to swing a golf club. You can't explain it with words or by showing, it must be discovered and practiced.
I disagree with your assesment of proper technique being "naturally" sourced. I don't think your "golf" argument is convincing. A good teacher can explain the mechanics in a simple to understand way, while giving the student checks and tests to make sure they are on track when practicing at home. I find that musicians tend to overemphasise the "natural" abilities of performers while minimizing the Brute labour involved with learning, choosing, and executing proper technique in proper context.
I wasnt talking about techinque. I was refering to the rolling of the arm using arm weight. These things are not all encompassing technique for piano just a small window. But you produce the desired sound, so what comes from the arm should not be a mental consideration rather an automatic response to produce the desired sound. If you don't hear what you need to play and consider how the arm should move instead to produce the sound you are sorta looking the wrong way around. Does a golfer look at exactly how his backswing and follow through works as he does it? No. And a teacher cannot explain away each step and magically hand the student the knowledge of piano technique.
Do most teachers teach techniques like rotation and using arm weight or is it something that each person learns on their own at their own pace? Also, if these types of things are taught, at which level are they taught at (beginning, intermediate, advanced)?
I am happy for you that you can learn piano technique simply by feel, but please do not assume that everyone learns that way. Remember that there are people on this forum that can be easily discouraged by statements like that.