a few points... - do the benefits outweigh the risks - could the £12billion the project has so far cost be better spent elsewhere, or not spent at all -your faith in "pinpoint accuracy" is touching but misguided - think "garbage in - garbage out". You demonstrate a very common trait wrt technology - an unwarranted faith it what it tells you which typically leads to a suspension of critical thought and common sense. "To err is human, to screw up on a grand scale takes a computer"