The dynamics of football as a game are very different from other sports which currently use technology  In other sports there is just one question: was the ball in or out? Was the player safe or out? In football, the issue would not be that simple. Not only would the GLT-operative have to consider whether the ball was wholly over the line or not, but they would also have to look at the build up to ensure that the goal was legitimate. Was there a foul? An offside? As in the notorious case of the 2010 World Cup Qualifier Play-off France v Ireland, was there a handball? This would not only be extremely time-consuming and thus detract from the spectacle of the game, but could also be potentially endless. In cricket or tennis this delay is more natural as matches are expected to take several hours; one of the hallmarks of football is it’s frenetic pace. Challenges could not be limited in an attempt to prevent this, because if a team were to run out and a blatant wrong decision were noticed they would be in the same position as they are now; GLT would have achieved nothing.