Is it time robot referees to officiate in sports?

The debate around rugby officiating, particularly the involvement of the TMO, has taken on a life of its own - with calls to let the man or women on the park do the officiating. Dr Nick Agar is a philosopher at the University of Waikato who specialises in ethics In a recently published opinion piece, he put forward an argument for robot referees. Dr Agar joins Nights.