Art is not always just for art’s sake: it has long been used as way of exploring, communicating and engaging people as well as bringing people together. Writers Mahfouz, Sheers and Brigstocke, and Cape Farewell director Buckland, discuss vision, ethics, imagination and integrity. They are joined by Mark Shorrock from the Swansea Bay Tidal Lagoon, who is unveiling the first of two international art commissions.