When I was in school back in the 90's and worked for the computing center supporting Unix workstations on campus, it was always funny to get called over to the CS department to fix a professor's workstation and discover once again that they had zero clue how to use their machine. These were the same professors I had in my CS classes, who were fantastic. They were 100% theory and not at all practical, and actually weren't the least bit ashamed to admit it.
One of my professors answered “How do you go about debugging your programs?” with “I don’t debug, I prove my code correct before typing it in.” Not very useful.
