You know, this makes me want to write a script for an Exploding Heads style video with a depiction of what VAR would have looked like if implemented in the 1970s.
Think there is some comedy gold in that, with VAR notifying the referee via a lad standing pitch side, radio in one hand, bullhorn in the other, to go to a tiny 24 colour CRT screen in a dark tent and them communicating with each other via rotary phone, before running out back on the pitch and making a big circle with his index finger in the air to indicate VAR review, before reversing his decision and getting the shite kicked out of him by the team affected.
Who needs var? We had that loony old duffer with a large transistor radio glued to his ear. The only problem was the daft **** got everything wrong.