When I was a grad student back in the late 70's, I worked in the campus computer center where all the undergrads had to use Hollerith cards and only the grad st

When I was a grad student back in the late 70's, I worked in the campus computer center where all the undergrads had to use Hollerith cards and only the grad students got to use CRT terminals. There was one card reading machine that was known to be flakey and would mis-punch the letter E occasionally and I used to love it when they would come up to me all frustrated that their program would not run and I would pull the offending card from their deck and hold it up to the light and pretend like I could sight read Hollerith and tell them they had a mis-punched card. They all thought I was a god... until someone would clue them in not to use old reader #11.