This is something many people think, but isn't necessarily true. Yes, the left hand fingering requires dexterity, but the dynamics, timing, and much of the ton

This is something many people think, but isn't necessarily true. Yes, the left hand fingering requires dexterity, but the dynamics, timing, and much of the tone come from very fine movements of the right hand. If you think about the bow as a lever, tiny movements at the fulcrum make enormous differences to the forces applied in the middle or at the end. So there's less finger motion, but more fine adjustment happening at the right hand than many people think.