Sir Geoff Mulgan is Professor of Collective Intelligence, Public Policy and Social Innovation at University College London. Formerly he was chief executive of Nesta, and held government roles (1997–2004), including as the Prime Minister’s Strategy Unit director and as Downing Street’s head of policy. He is the founder or co-founder of many organisations, from Demos to Action for Happiness, and the author of Another World is Possible, Social Innovation: how societies find the power to change, Big Mind: how collective intelligence can change our world, and other books.  

“What I think we need is many more people thinking through what would this whole circular economy look like? Let's picture 20, 30 years into the future. Imagine we really did become circular. How would tax be organized in that world? Would we be taxing new stuff much mor ...