We used to have a poster of Billie on our wall at work in which she would explain, using crudely blue-tacked speech bubbles, the intricacies of weighting, sampling and pricing to curious market research executives. This kind of thing appears to be a banker, if the Britney Spears guide to Semiconductor Physics is anything to go by. If you read any other weblogs, you’ll already have seen it, but come now, you could hardly expect me not to jump on this particular bandwagon!