FIFA Director of Refereeing Massimo Busacca said he does not expect the VAR (Video Assistant Referee) system to work perfectly at the upcoming tournament in Russia.
"We run very fast to implement [this system]... But, of course, you need time," Busacca said.
"And that's why in this season it was very important to understand what we should improve.
"We think we are ready but (we) don't think that it will be perfect as no national team is perfect. Don't think that technology solves 100 percent. In front of a video we will always have a human person who's making an interpretation.
"But I'm sure and convinced that the scandal, what we remember from the past, we won't see (that) anymore."
Chairman of the FIFA Referees Committee Pierluigi Collina added that psychological factor that is connected to VAR is very important for referees as the system allows them to change their decision on the field by reviewing the incident and thus eliminating mistakes.
Russia will host the FIFA World Cup from June 14 to July 15, with the games set to be held in a total of 11 cities.
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