Special qualities are required to be an international rugby referee: Clark Kent's X-ray vision to monitor the breakdown, MacGyver's geometric wizardry to calculate split-second angles on tip tackles and the hide of a politician to withstand barrages of criticism, regardless of the decision.
Look at the cross-section of whistling victims from the World Cup. Alain Rolland was castigated for sending off Welsh flanker Sam Warburton for a tip tackle in their semifinal; Nigel Owens was accused of being racist and biased on Twitter by Samoa's Eliota Sapolu-Fuimaono; Bryce Lawrence had a Facebook hate page devoted to him by Springbok fans after South Africa's defeat by the Wallabies in the quarter-finals. Who would be a ref, even if you were getting paid to travel the world following rugby?
Hence International Rugby Board (IRB) referees boss Paddy O'Brien's idea to conduct an experiment enabling referees to access more video technology in at least one Northern and one Southern Hemisphere competition. Paranoia with the constant flak means referees are looking to pass on more responsibility to the television match official (TMO).
O'Brien's initiative means the TMO would be entitled to monitor footage more closely and for a longer period leading to tries. It is a frustrating move but understandable given the recent wild reactions of players, officials, coaches and fans adversely affected.
Why wouldn't a referee take as much evidence as possible into account when making big calls to avoid the imminent backlash?