Decisions are now highly scrutinized due to advancements in technology, incorrect decisions can be seen from multiple angles and in slow motion.
This means incorrect decisions are publicized and the ability of the officials are questioned.
Less officials want to referee high profile matches.
Media hype around events has intensified pressure on players to win at all costs.
Players are more likely to bend and break rules in order to win.
Increased pressure on officials
Rugby World Cup 2015: Why video referee couldn't be used in Scotland v Australia
The referee in charge of the game awarded a penalty to Australia with under a minute of the match left.
Craig Joubert penalised Scotland for deliberate offside but replays seem to prove his call was wrong with the ball coming off an Australian player rather than a Scottish one.
He then sprinted off the pitch at the end of the game.