I thought the VAR folks are in a bunker somewhere close to Heathrow... either way, doesn't matter. I think slo-mo is great for TV, but bad for refereeing. You can almost spot a foul in every single passage of play if you really want to. It then becomes arbitrary and very subjective what a foul is, especially considering how the rules are written. I think elite (and not elite) players "feel" what is a foul, and what isn't, so maybe we just need to get rid of the old guys that can barely move up and down the pitch, and bring in the retired pros. I read somewhere that 1/5 of all pro players go "broke" after retiring...
ETA: I guess bringing in retired pros could cause more bias... meh, I'm glad I'm not getting paid to fail at this task.