Question of the Day!

Well, I didn't articulate it as 'librarian', but I did put stickers with made up call numbers on my books when I was in Grade 3.
I remember seeing that the call number was a mix of three letters and three numbers, and didn't realise this followed a classification system of last name of the autor and subject number.
So I'd put random numbers on my books, and call it my library.
Twenty years later I went on to do my Bachelor's Degree in Library Science, and am now conducting library activities part time in a school.