Once upon a time (it's going to be one of those sorts of stories) there was a pen which wrote with an ink which was made so that it would never fade. How could that have been possible you ask? Magic. It must be magic (it is, one of those stories, after all). But no, you was not magic, are mistaken. It or at least not in the way that you think. Though there is still so much that is magical in the world. How does a bird feather stay vividly red, when the
feather's owner might have been nesting in the time of Dickens? Perhaps some time ago (and not very much time ago, either) you might have said it was magic. But today, you can very easily ask the little machine you carry around in your pocket or your purse, like a handy talisman (it is) and will quickly be told that a bird's feathers are
