Clear and obvious refers to the error in the onfield decision. Have they made a clear and obvious error in making their judgement? The intention, as i understand it was to reduce controversy and ensure the right decision has been made.
This has perhaps been the case in many areas which have been defined as clear cut because of the laws being well defined.
However, one problem, amongst many, in bringing in VAR was that they considered the technology in their readiness and didn't look too far beyond that at the laws themselves. They focussed on Cameras, mic's, screen on the pitch, cabin in Stockley park, comms to the ref. Great, job job, lads. But what about the rest?
What was very apparent from the decision at Spurs in 2019 with Lundstrams big toe, to the decsion this weekend and the decision onfield at Old Trafford this week, is that that they haven't standardised the process and nor have they helped those making the decision to remove the subjectivity. In the example of offside, its still clear cut, black and white. Like almost all decisions, but is it a toe, the body, the majority of the body, light between the two bodies?
Drawing lines is great, that can be standard practice, but what is offside now? Same with handball? Same with fouls in the area? Same with diving?
Many decisons are overturned, wrongly. VAR is an assistant, it shouldn't be the police. The question they should ask when they review is whether there was a clear error. Not to find a reason to over turn a decision.
As i've said before, there needs to be a time limit. If it takes longer than 30-60 seconds to review then the onfield decision is deemed correct. VAR has to assist and not disrupt the game.