When the Titanic, billed as the ship that even God himself couldn’t sink struck an iceberg, everyone on board was unmoved. The resident band in the first-class lounge played on without skipping a beat. The crew and passengers, assured of the indestructibility of the vessel, carried on as if nothing had happened. Until the ship began to sink inexorably; then the “keep calm and carry on” mask of British stoicism slid off and pandemonium ensued.