I'm sure I keep submitting this link, but I urge you to visit
Computer Stupidities, and browse through the archive of user-submitted "stories and anecdotes about clueless computer users" ... at the top of the page is this quote:
"On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question."
-- Charles Babbage (1791-1871)