David Orrell is a scientist and writer of books on science and economics. According to the Sunday Times ‘Orrell is an engaging and witty writer, adept at explaining often complicated theories in clear language.’ His latest books are The Money Formula: Dodgy Finance, Pseudo Science, and How Mathematicians Took Over the Markets, written with Paul Wilmott; and Economyths: 11 Ways Economics Gets It Wrong (Icon Books, 2017).