What a great topic - love the replies! My two faves are 'I trust I will make mistakes and no one will notice it but me' and 'I trust I will never have enough fabric for a project so buy more!'
It's unfortunate that we can't count on purchasing product according to accurate weights and measures, but I am sure it were ever thus...right back to Biblical days there were folks who just couldn't give a buyer 'full measure'.
But those of us who want accuracy in what we ourselves do, do it differently. Analytical measurements using scientific instrumentation are taken in multiples and averaged. Carpenters and quilters measure at least twice before we cut, and we always use the same ruler system or check that they match up exactly.
Just a couple parting thoughts about bad cuts: maybe if they used that GO thing the sellers of pre-cuts could be more accurate
and maybe if they got a bigger cutting table, a good ruler and a sharp rotary cutter my LQS could actually cut a straight yard of fabric