I don't see how you can ever have refs which don't make mistakes, its practically an impossible scenario, as I don't believe we appreciate how difficult the job is, regardless of experience, to be on a football pitch and have to make a call instantly and then have an assistant who is as unsure as you AND have players screaming, crowd going mental, its means poor decisions will happen.
We probably need to look at the hiring of refs, and how they are trained, as certain personalities cope with pressure better, yet because all decisions need to be instant then teams will benefit from wrong decisions.
It's all very simple to resolve, just embrace video referrals as they have in Rugby, and challenges and hawkeye as they have in Tennis and Cricket. And while they're at it, give the refs microphones so we can hear their justifications for decisions and discussions with players.
The reason the authorities will never do it: It's not very marketable listening to a bunch of chavy thugs like Terry and Adam intimidate and hurl abuse at refs.
Every now and then one of the omniscient pundits comes out of the wood work saying how bad video refereeing would be for the game, because apparently wrong decisions and controversy make the game more exciting to watch

