My point is the flow of the game. Refs are needed in basketball and football because so much is going on almost simultaneously if that makes sense. There is no right technology. I know you probably played playground basketball or football. e.g. at the playground basketball court, there's always some Zach Randolph aka Zimbo type of player that gets in the low post and you cannot stop them. We would hack the living shit out of them but they still stay in the same spot and scored their points. Can you imagine if Zimbo or Shaq called foul everytime someone hit their big bodies hard, the game would last so much longer. Think about it.