I would dare-say that while no machinist could detect changes faster than a pilot, the feedback is needed in machining, on several orders of magnitude. With high-speed machining processes and S-curve acceleration being used (a welcome upgrade for the hobbyist/home shop user) it's far more important for the machine to be able to address any issues that might crop up...that is what is so great about CNC...the control SHOULD be doing all of the machining work, once a setup and program are optimized. In this case, it's all about putting the heavy lifting on the computer, not the operator.