Through Impact, the Left Wrist (10-18-0) is responsible for the Hinge Action (7-10/18 ); the Finish Swivel (2-G); and maintaining the alignments of the Left Arm Flying Wedge (6-B-3-0-1) and its Rhythm (1-L #8 / 6-B-3-0 / The Glossary).
Only when the Left Wrist is fully in command can the Right Forearm Flying Wedge (Right Forearm and #3 Pressure Point) Deliver with abandon its Lag Pressure Load into Impact (Major Basic Stroke / 7-3).
The left is subtle, the right is powerful. Geometry (L) and Physics (R).
Hybrid Mode
