QuesTec.

[beatlejuce]

6" I've never seen that. But then I know what 6" really looks like." ; )
6" is approximatly the width of two baseballs. Also catchers aren't invisable and last I seen the Ump was standing behind him.
The plate probably can't even be seen by the unpire.
(I remember a couple of times it changed the result of the whole game.)
Absolutely absurd.
Here's what happen "it was a 2-2 count and 2 outs bottom of the 9th bases loaded, score tied, Umpire's pizza getting cold". The pitch went way outside
the plate (from the OVERHEAD camera not the outfiefd camera) and at that second it reminded me of the winter olympics judging. Umpire called a strike !
A terrible call.

How about one of the other pitches that the batter chose not to swing at? That could have been a grandslam.
If the batter didn't swing at a strike that could have been a grand slam then the player needs to practice. It was the player that lacked skill not
the bad call from the Ump.

How about the the fly ball the right fielder didn't catch? That was the win right there.
Outfielder needs to practice and improve his skills.

(There isn't any umpire/official/judge that wants replay because it's obvious that they screw up.)
No. Many actually like replays. Some who don't feel that since the camera doesn't have the limitations the game or situation may place on the offical (getting screened out, having to sprint with the receivers, being concerned with one's safety, etc.) it doesn't actually reflect what the official "saw".
Good point!!!

The flaws in Questec have already been pointed out.
Again, if someone is going to make a mistake, I prefer it to be someone human.
Yep I agree the human player not an official.