Other comments could focus on footwork or placement adjustments when target areas are used. The teaching professional becomes the guide for the players instead of imposing information on them. Learning and retention is accelerated when people are guided to make their own discoveries. The human mind races along at a pace much faster than conversation allows. It is fascinating to see that students concerned with helping someone else as they learn themselves experience increased focus.
Human beings run on the principle of oscillation.
Fluctuation keeps us focused. Examples are voice fluctuation versus monotone, or driving a car in traffic versus on an open highway. Tennis intrinsically oscillates as well. The anaerobic activity which pairing offers simulates realistic tennis activity. Instead of just hearing the teacher s voice they hear many different voices through the course of a group lesson experience.