There is - I’m not trying to work it in but if you’re writing a book, I mean, it - I do do a certain amount of research and folklore is quite important in the books, so where I’m mentioning a creature or a spell that people used to believe genuinely worked - of course it didn’t, but it’s still a very picturesque and a very comical world in some ways. Then I will find out exactly what the words were and what the characteristics of that creature or ghost was supposed to be. But I hope that that appears seamlessly. Children often ask me how much of the magic is ‘real’ in inverted commas, in the books in the sense that ‘did anyone ever believe in that’. I would say a rough proportion of about a third of the stuff that crops up is stuff that people genuinely used to believe in Britain, two thirds of it though is my invention."