phoenix
I used to work for a students' union at a university. Many years ago the students were running a protest campaign against something or other and I was tasked to type up a letter onto a stencil (or 'skin' as they were known), so that this could be printed off by the hundred, or thousand on a Gestetner rotary duplicating printer. The letter was a petition, addressed to the Vice Chancellor, and was to be handed out to students who would then add their signature and deliver it to the VC's office, hopefully deluging him with thousands of the things.
It was impressed on me just how important it was that this letter should be absolutely word perfect, not even the tiniest error. I typed as carefully as I could, scrutinising the skin several times once finished before committing it to the printer.
I ran off about 200 and one of the exec committee members grabbed them and ran outside to pass them out. Five minutes later he rushed back looking horror struck and told me to stop the print run. Yes, I had made sure the body of the letter was absolutely perfect. But I hadn't checked the salutation, which read, "Dead Dr Brown". ( not his real name )
Oops 