Our ability to imagine change is our defining human power. Over the past two centuries, there has also been a growing awareness of our ability to direct it. In this event, Martin Reeves will reappraise romantic notions of imagination. Must we wait for imagination to strike, for example? Is imagination essentially solitary, or can it be a collaborative enterprise? Is it a mysterious process or can it be taken apart and examined? Above all, might we find a way to harness it systematically?