Re: Why we need computers calling balls and strikes
We have technology to detect the path of sub-atomic particles traveling at the speed of light. We have technology to guide missiles thousands of miles to within a few feet of a designated target.
I really don't see how we can't build a machine to determine with extreme accuracy if a sphere, traveling at 60-100 mph has traversed a certain area in space.
It's a matter of "if you order it...they will build". Developing this stuff is expensive. So unless MLB gets behind this and says (with open wallet) that they want this, no one is going to build one.
As Dougdirt says, what the have now (Questec or whatever it is called) is already better than the human umps. I'm pretty sure a much more accurate device could be developed. Time and money is what it takes.
You can have better now and perfect later. You just have to want it.
(BTW there are dozens of patents for strike zone machines already)