that's the problem, most of the rules are open to interpretation, so certain referees (most) can make them up as they go along.
there is no rule book its open to interpretation in refereeing and how can you ref it any other way the basic is set in stone and the rest is just made up. i don't get yesterday really the ref was running to the play and giving city a free kick hand going to the pocket next thing he is hold up his hand to the ear and waving play on. that can not be right if he is taking advice from somebody else and that is in the rule book you have to make your own mind up and can not change it with help from somebody else
the thing is city are not the finished article in any way and really should have score 3 goals and the result would be different but that non sending off is the killer for me. it was a slap in the face for city by the officials and if any turning point that turned the game like yesterday then you have to ask questions
if they can use video evidence for the players then why not to punished the ref he is a professionals and gets well paid to do his job BUT YESTERDAY HE LOST IT BIG TIME we (manchester city) should be strong in letting the premier league hand pick the ref we should have a say and point out the mistakes he made before and say NOPE
little things all add up over the season but yesterday would take 2 season for the ref to even up