special one-day multi-media symposium exploring The Power of Film with Mariella Frostrup, Melvyn Bragg, Germaine Greer, Will Self, Fatima Bhutto, Michael Gunton, John Simpson, Elif Shafak, Beeban Kidron, Stephen Bayley, Christiane Amanpour. Plus, Herman Narula the CEO of Improbable on " Creating new reali