Brings back bad memories
"He had resized his Eudora window down to the point where it could not show the full message and did not know how what horizontal scrollbars are for," Andre told us.
Lots of people in the early 90s had computers plonked on their desks and were never shown or never managed to work out how to use the GUI properly. It was even worse when their company was too tight to provide proper training for particular software packages.
Customer: "Why do you never put headers and footers in the Pagemaker documents you send me?"
Me: "Why do you never use the page view and magnification controls?"
(I was a bit short-tempered that day. I think I apologised later.)