I'm also old enough to have spent (way too much) time sitting at a keypunch machine, then later (way too much) time spent watching for my batch to fail on one stupid typo, then (way too much) time spent flipping thru the stack trying to find which card had the mis-type. Fortunately this was all in school so at least I didn't have to deal with this 8+ hours a day at a job.
Yeah...nightmares.
Yeah...nightmares.