I'm not a big fan of soccer. I don't mind watching the occasional game but it's not a game I particularly care for. This weekend, Melbourne Victory and Newcastle Jets played out a match that was decided by an umpiring error. But it was an avoidable error being blamed on a failure in the technology that detects players when they are offside. The system broke down meaning that a clear violation of the rules was missed and the only goal in the match stood when it ought to have been disallowed. But the role of technology in sport has been vexed for some time.