I had a post deleated in R&N so rather halfheartedly posted this in JB. Despite everything, I think it's germane.
Skip the first couple of paras.
http://www.pprune.org/jet-blast/3759...ml#post4993312
The
computers can't interpret long periods of 'Rubbish in' so they gave 'Rubbish out'.
quote was well covered in a post earlier.