goal line technology

instead of using cameras or other technology to decide if a ball has crossed a line, uefa in their wisdom added two people who will sometimes have a good view. and even when they have a good view they still get decisions wrong.
yet to introduce technology they want it to get the decision right 100% of the time. surely getting it right 80% of the time is still better than having people who aren't that accurate?

even stranger is when they defended being archaic using one of their principles which is 'to have solidarity between all levels of the game'. they seem to have given up using this defence which disappoints me. i would have liked to see champions league football with the same principles as a sunday league game*.

we would see things such as:
the linesman are selected from the substitutes (one for each team).
referees able to ignore said linesman as and when they see fit (inc offside decisions)
nets put up by the home team players shortly before kick off
undersoil heating not allowed


i've also read a lot of people say it's bad because it opens up a can of worms. eg ukraine's non goal when the ball crossed the line was offside anyway from a couple of passes earlier. so two wrongs make a right for them(!?). and being able to cut out one error of judgement entirely is bad. i wonder if they advocate getting rid of linesmen too? or maybe because they aren't perfect it's ok to keep them.
so how about a goal line technology that is only 90% accurate? because that is what they have! why not make it 99%?


*sunday league is FA sanctioned rather than UEFA but perhaps the FA has to obey UEFA?