Seriously, the future should bring in more technology to help umpires make accurate calls without replays. The sport of fencing has for decades used technology to determine touches. Racing can measure times instantly to hundreds of seconds. Similarly baseball could instantly determine tag plays and force outs with electronic technology that's already feasible.

Slow-motion replay is raising some new issues of definition. When is a ball caught on a force-play? When the ball first enters and touches the glove, or when it rests at the back of the glove? Before slow-motion replay, the micro-second physical difference there wasn't noticed, but now it's apparent and even provokes comment by the TV analysts. A couple of years ago, slow-motion replay caught a case of a bat twice hitting a ball so rapidly it wouldn't have been noticed before extreme slow-motion replay.

I personally suspect, from studying a recording of the final pitch of Don Larsen's perfect game, that the last pitch was a legitimate strike. Slowing the recording down seems to show that the batter broke the plane with his swing, but retracted it so fast that it looks like he held up his swing at regular speed. He protested he hadn't swung (maybe the batter dost protest too much?) The ump actually considered it a called strike.