John Thackara is founder and Director of The Doors of Perception (Doors). This event production company organises festivals in Europe and India in which grassroots innovators work with designers to imagine sustainable futures – and take practical steps to realize them. Doors works with an international community of design and innovation professionals, and students, whose aim is to learn how to design services, some of them enabled by information technology, that meet basic needs in new and sustainable ways. This unique community of practice is inspired by two related questions: “we know what new technology can do, but what is it for?” and, “how do we want to live?”. The results are published on the Doors of Perception website, and discussed at the Doors of Perception conference.