Years ago, when I was in prep school and just getting my “sea legs” under me, I remember my history teacher entering the classroom in a fluster. He had just sent out an email, and he had managed to misspell a word. He hadn’t caught the misspelling and I’m guessing someone emailed him back, letting him know the error.
He was mortified and went on this tear on how email can make us lazy. The year was 1993 and his small typo seems almost quaint by today’s standards.