Sure, the technology may soon enable tracking the ball's path to centimeter accuracy. But, the strike zone is not defined to that level of accuracy. Yes, the edges of the plate are well defined. But the upper and lower boundaries of the zone are not defined to that accuracy. Just throwing two horizontal lines on a 2D image of the pre-pitch batter's stance is not that accurate. Furthermore, it's not easy to do a better job than that! The strike zone rule, as currently written, probably defines the upper and lower boundaries to an accuracy of a few inches, at best. Unless the upper and lower boundaries are better defined --- and I am not convinced they can be better defined --- fantastic accuracy in tracking pitches will not make roboumps the ultimate answer to "getting the call right." Barring a dramatic rewrite of the strike zone rule, any use of pitch tracking systems will always involve human judgment of the upper and lower boundaries.