https://www.techradar.com/news/what-is-var-the-controversial-star-of-world-cup-2018-decoded > In a recent press conference, former referee and now chairman of FIFA's referees committee, Pierluigi Collina said that VAR at the Russia 2018 World Cup was "very close to perfection".  > He was referring to the 99.3% accuracy rate the video assistant referee system has had so far in the tournament. If this is indeed the case - and who are we to doubt FIFA's statisticians? - then why has there been so much controversy around the technology that, on paper, has improved the game?