Updated: Mar 19, 2020
Our hand is the most advanced, versatile, and flexible tool that no machine can replicate or even getting close to the adjustment it can deliver. Most importantly, we can feel with our hand but machine can’t. The line of adjustment is not always straight forward due to the structure of the joint surface, sometimes we need to lift, or torque, and differ in angle, speed, and power in one single adjustment, based on the feedback we felt through our hands. That amount of versatility can only be achieved through hand.
As for any skill, precision is attained through conscious practice. By eliminating the easier option of machine aided adjustment, a master adjuster trained in Gonstead method spent his/her life time perfecting hand only adjustment; the difference is well analogized as a casual driver vs an F1 car racer.