To the pub last night for an evening of Valentine's Day songs. The singer had a lovely voice, but to my near deaf ears too many of her songs sounded like those you sing as the Titanic is about to sink. So I started doodling on a post-it note I happened to have in my pocket. "What's that?" one of my companions asked. The question launched the stream of consciousness reproduced above. When I had finished she looked at it and asked again, "what's that?". "Read my blog tomorrow and I will explain it", I said. But I have had second thoughts. Some things are best left unexplained.