Steven Pinker (Reader) Steven Pinker is an experimental cognitive scientist. Currently Johnstone Professor of Psychology at Harvard, he has also taught at Stanford and MIT. He has won many prizes for his research, teaching, and his eleven books, including The Language Instinct, How the Mind Works, The Blank Slate, The Better Angels of Our Nature, and Enlightenment Now. He is a member of the National Academy of Sciences, a two-time Pulitzer Prize finalist, a Humanist of the Year, a recipient of nine honorary doctorates, one of Foreign Policy's 'World's Top 100 Public Intellectuals' and Time's '100 Most Influential People in the World Today'. Bill Gates (Reader) Bill Gates is a technologist, business leader, and philanthropist. In 1975, he cofounded Microsoft with his childhood friend Paul Allen. Today, he is cochair of the Bill & Melinda Gates Foundation, where he has spent more than twenty years working on global health and development issues, including pandemic prevention, disease eradication, and problems concerning water, sanitation, and hygiene. He has three children. Hannah Fry (Reader) Hannah Fry is an Associate Professor in the mathematics of cities from University College London. She is also the author of The Mathematics of Love, The Indisputable Existence of Santa Claus and Hello World and regularly writes for The New Yorker. In her day job she uses mathematical models to study patterns in human behaviour, and has worked with governments, police forces, health analysts and supermarkets. Her TED talks have amassed millions of views and she has fronted television documentaries for the BBC and PBS. With Adam she co-hosts the long-running science podcast, 'The Curious Cases of Rutherford & Fry' with the BBC. Daniel Kahneman (Reader) Daniel Kahneman is a Senior Scholar at Princeton University, and Emeritus Professor of Public Affairs, Woodrow Wilson School of Public and International Affairs. He was awarded the Nobel Prize in Economics in 2002.