Our second episode recorded live at the Royal Albert Hall, Robin is once again joined by guest co-host Sarah Kendall, with this week's special guest mathematician, author and broadcaster Dr Hannah Fry. They chat about Hannah's upcoming book Hello World, books on AI and the internet, air crash investigations, butter, baby food and making bad decisions based off of junk maths. Hear an extended edition of this episode, and almost all our other episodes too, plus bonus episodes and more by becoming a Patreon supporter at patreon.com/bookshambles