Coming from electric bass to upri...er...double bass, I learned how to play with a four-finger/four-fret span. As I'm used to it, I find myself using all four fingers. Yet, everyone says you shouldn't use the ring finger. I understand that it helps you stay in tune in the lower positions, but if you can play in tune using all four fingers, why wouldn't you want to use them? Is there some sort of hand cramping thing that can happen? Or is it a matter of tradition?