LOCKDOWN DEBATE: Matt Ridley discusses his new book in conversation with Rob Lyons. Innovation is key to economic growth and the improvement of human welfare. In his new book, How Innovation Works, Matt Ridley examines how new technologies, products and medical advances come about. He notes that innovation is more than mere invention - the aim is not simply to create an interesting new device, for example, but to produce something that is genuinely useful and widely available. What drives innovation? Is he right to conclude that we cannot speed up innovation through central direction? What are the barriers to greater innovation now and in the future? Matt Ridley and Rob Lyons discuss.