[metallion]

6-B-1-D

Extensor Action is the steady effort to straighten the bent Right Arm. This stretches but does not move the Left Arm.

I'd say The Machine is equipped with independent mechanisms for Extensor Action and RFP and that the Hands are not involved in RFP. The hands get a free ride by the RFP.

If a "lift the hands" command is sent to the Hands it would result in cocking of both wrists and in this case the right wrist in particular. Which is obviously not desired.

The sequence of an "activate Extensor Action" command followed by a "lift the right forearm" command is what should be dispatched to The Machine.

"Lifting the Hands" and "Lifting the Forearm" are different features of The Machine.