It's been almost three years since we had Tim Harford (BBC's More or Less) on the show so we're delighted to have him back in the virtual studio to talk about his new book How to Make the World Add Up. They chat about that, what got Tim interested in economics and statistics, how facts can be misused and then Tim blows Josie's mind with the real rules of Monopoly. Over 15 mins of extra chat for Patreon subscribers this episode. Sign up at patreon.com/bookshambles