I agree Cleatis123. An understanding of how a plane flies, airplane construction and the forces that are at work during flight as well as how your equipment relates to these properties is a must to become an accomplished RC flier. Too many times crashes are blamed on equipment, mechanical failure or design flaw when the real culprit is pilot error. Many times the pilot unknowingly done something that lead to the equipment or mechanical failure.That is still pilot error. Maybe it was not a "dumb thumbs" cause of the crash but still an avoidable situation. The end result is the same.