Hi 737Jock,
A pilot is trained to intervene through control-inputs, initial pilot training is the basis for this.
I agree.
It is interesting to note that Airbus went in the direction of the computer has control; Boeing designed the 777 so the pilot has ultimate control.
See para 11.3 of
B777TheAvionicsHandbook
"What should be noted, however, is that none of these features limit the action of the pilot. The 777 design utilizes envelope protection in all of its functionality rather than envelope limiting . Envelope protection deters pilot inputs from exceeding certain predefined limits but does not prohibit it. Envelope limiting prevents the pilot from commanding the airplane beyond set limits. For example, the 777 bank angle protection feature will significantly increase the wheel force a pilot encounters when attempting to roll the airplane past a predefined bank angle. This acts as a prompt to the pilot that the airplane is approaching the bank angle limit. However, if deemed necessary, the pilot may override this protection by exerting a greater force on the wheel than is being exerted by the backdrive actuator."