Does it extend what art is? Does it remove mystery or ...? I think the basis of this is superstition I have held since childhood that divulging plans too early somehow sucks energy from the work.
I think Evaldart's replies to all the questions are as good as they get when it comes to knowing your practice, your job, or as a neighbor recently said "its what you do". And what he does he does with, and because of, confidence and focus, the result of doing and learning. The rest is just effort, and the discipline of knowing how to fuel it and always setting it free. Its a path you can't learn in school. Samurai art.