The problem is with the application of the offside rule because the decision must be taken when the ball is played. Often the decision is obvious - we saw and incident at the swamp yesterday where a "goal" was disallowed because the scorer, Rashford was at least 3 yards offside. Even so we had the full drama of the ref touching his ear piece, signalling a delay and then announcing the free kick! But as the pace of the game increase some cases are very close indeed, some impossible to see without technology and some even with technology cannot be be given with any confidence at all (as on Saturday). So, yes - the rule needs to be clarified, at the very least to take account of the inability of current technology to locate the precise moment at which the ball was played. In my opinion basing offside on the position of the feet is about the best we can do. On Saturday we saw how ridiculous ruling an armpit offside was - did the ball actually leave the ground? It was certainly never played by an armpit in the move!