In 2015 Arabella Dorman hung a boat upside down in a Piccadilly church. The boat had been carrying refugees in the eastern Mediterranean, but now it was a piece of art, a symbol of 'exile and desperation' as well as courage and hope. Cartoonist Gerald Scarfe, who reported from Vietnam and Northern Ireland, wants to know if there is a different way to report the news, so here he talks to Arabella about whether her boat worked.