I got an e-mail from my old headmaster today which was a pleasant surprise. I couldn’t help noticing that as I read it, I sat to attention and paid close heed to the words as if I was to start a comprehension test soon after. Even more surprisingly, when I replied I addressed him as ‘Sir’ and signed off with my full name. It’s been over a decade since I was at school. Thinking about it, I know that I would still call every one of my teachers ‘Sir’ if I met them in the street. Is it just my mind that is funny like that? I suspect not.