Peter Grant insists whoever controls VAR if it is introduced to Scottish football will have their work cut out for them after more debatable calls in Celtic's 3-1 Premiership win over Livingston.
The Hoops coasted to their first win in West Lothian since 2007 thanks to Daizen Maeda and James Forrest goals, alongside a Nicky Devlin own goal.
Andrew Shinnie pulled one back for Lions boss David Martindale, who was unhappy with Maeda's goal and Devlin's knock into his own net.
Anthony Ralston put the ball out of play in the build-up to the Japanese striker's finish, but referee Nick Walsh deemed a corner off a Jason Holt touch.
Martindale also reckons Tom Rogic handled the ball as Ange Postecoglou's team swept up the park to take the game away from Livingston with a two-goal lead.
Referees were involved in technology demos on how VAR might work in Scottish football this week as clubs swither on whether to introduce it.
Celtic legend Grant told Sportsound it could still bring problems like those seen in England: "We are always going to argue about a decision, whether you're trying to win a league, a cup, or the money you could miss out on by being relegated.

"So we understand the reasons behind it. Then the other argument is let the referee ref the game. What is the linesman there for? I've seen it down in England a lot and I have seen a lot of mistakes.
"It's three minutes before a decision is made sometimes and I don't think the punters will accept that up here.
"Could you imagine Celtic and Rangers fans, week in, week out? Who's the guy (controlling VAR)? He'll need to be sitting on the moon to make a decision. I can imagine the stick he'll get."
Former Hearts manager Craig Levein meanwhile reckons it could be a big victory for Postecoglou. The Hoops are three points clear at the Premiership's summit with eight games to go.
Levein told BBC: "I've been really impressed with Postecoglou, he backs up what he says. But I was always calm when I won 3-1 as well.
"It's a hugely significant win. Much has been made of Celtic's record here and I think Ange has used that. Celtic deserved their win for sure."
Scotland legend James McFadden watched Hoops defender Car Starfelt with interest. He believes the Swede had a great game amid criticism in his performances.
McFadden said on Sky Sports: "I thought Starfelt was excellent. He comes in for a lot of criticism. He gets a lot of it but was outstanding here when called upon.
"He squeezed the game, won his battled and showed composure. He was outstanding."