Dr Philippa Law, Community Coordinator at GuardianWitness, will demonstrate how harnessing the wisdom and, more importantly, the personal experiences of the crowd can improve journalism and create a richer picture of the world. The Guardian has a long history of working with its readers to shape and improve its journalism. In 2013 it launched GuardianWitness, a user-generated content platform designed to enable members of the public to share their photos, videos and stories.