This is an odd thread... my impression of the OPs sentiments is that they're pretty closed minded. I've played for 25 years, I know what I'm talking about, AND I know there are many approaches, theories, techniques, musical systems, and opinions about what to do and how to do it. I like hearing from those whose thoughts and styles differ from my own. I know enough to know I don't know it all, and the more I open myself to the possibilities of doing and thinking about things differently, the better a player I'll be. Don't shut the door, there will always be more to learn.