How on earth did football survive when the referees didn't have the back-up of an outfit like Bletchley Park backed up by trigonometrical geniuses with computer programmes that measure in thousandths of an inch? The answer is perfectly well for well over a century so why now are we accepting this nonsense ruining the game by over analyzing details that the referee has literally no chance of spotting with the naked eye and some person intervenes to make a decision away from the pitch? I also think the standard of officiating will deteriorate given that someone else will step in and get the ref off the hook when needed. I will agree that some of the decisions that are over-turned are correctly applied but the offside rule has become blurred to the point where I believe it needs a major overhaul in order not to become the factor in the ruination of the game. Having refereed for many years I must confess that I not totally sure what constitutes an offside any more and in those days it was so much more simple but today it seems that if any part of the body falls afoul of trig functions then the player is deemed offside. Is a player's finger tip going to score a goal or is it more likely that a leg might put the ball in the net? The sport is called football for a reason and for me the only possible answer is to concentrate on where the defender's and the forward's legs are in relation to one another and the one furthest forward determines whether or not it is offside. Lots of discussion to be had here and various scenarios will arise based on individual's opinions but the use of a system that was introduced originally to monitor the goal line has taken itself too far for me and some of the decisions beggar belief and needs serious consideration as to it's part in dragging the game downwards. The Man Utd match today is a classic example as to why some of us are scratching our heads.