I am all for our robot umpires. The rules should be the same for everyone, and the human element should be about the players. We don't randomly apply different rules in chess or other games, just to have a human element.... to put it another way....no one would invent the game to have a human element of rules application, if both robots and humans were the first choice. Maybe for a different game, that had a different purpose for how it provided entertainment, but not serious sports as we understand them now.