Can someone please tell me why AFL football umpires........?

The AFL Umpires are highly professional and they are all part of the spectacle of the game. The certain actions they use with their arms and stuff well the players understand what this means. AFL umpires are highly fit too and have to be good at running and endurance too. The players might be in a situation where they are not sure whether they have given away a free kick and in a split second need signals from the umpire like play on as the umpire has seen no infringement. No they don't have to wait for the umpire to tell them what to do. Usually the umpire's whistle will stop play and the decision has been made for a free kick because of holding the ball or running too far without bouncing the ball or whatever or they might try to "milk" a free kick but the ump. doesn't buy it and may indicate play on play on with his arms. Obviously you haven't watched too many games of AFL and there are many intricacies in the rules which you can truly understand by experience.