Two goal-line assistants are all that is needed. Or a 4th official watching replays. Then you have the linesmen watching for offsides and the ref watching general play. The bit that matters most is obviously the goal-line as that's where it all counts most.
If that had been Brazil yesterday getting a goal disallowed against say a more 'industrial' team and it was in the final and they got beat there would be none of the laughing about it because it was England, there would be a complete clamour to stop this nonsense ever happening again, Blatter is a pri**. neither additional officials nor technology would mean delays every two or three minutes - how often do you get a truly contentious goal-line issue? Not even once a game really on average. Does it matter when it happens though - damn right. :Cheers: