A friend of mine and I are at an impass. I say that in order to become a great musician, you should be able to read and write music (standard notation) and understand a good grip of knowledge before you are a great musician. He, on the other hand, thinks that you can become a good musician if you're not totally sure of what your doing when you play. This mostly applies to the guitar (which was the basis of our argument...) but we want to see what other people's opinions are. We keep coming to a stalemate.