I remember an English teacher asking us what, in our opinion, was the most useless thing we would have to learn at school. I replied that I thought it was the capital cities of the world. What possible advantage could you have over anything with the knowledge that the capital of Peru is Lima? I was somewhat surprised that he agreed with me – although I later found it would be a trick question. He was making the point that education itself is useless – something about Milton. But that’s another story.