"the score in 1966 would still have been 3-2"

That isn't really so as the entire end to the match would have been completely different. Likewise with the England v Argentina game. Anything changing like England's thrid goal against the Germans or Maradona's first against England, being disallowed would be bound to change the rset of the game in one way or another.

Saying that if they bring technology in to it I hope they don't go the same way as Rugby Union. The refs often seem unwilling to give a try without going to the technology unless it is blindingly obvious. You hear them saying "is there any reason for me not to give that try?" and it slows things down and mutes the instant celebrations etc. It would be much better just to have technology interfere only in real special circumstances when the refs have made a glaring mistake or obviously missed something crucial.