We experience our day-to-day lives in story mode. The brain creates a world for us to live in and populates it with allies and villains. It turns the chaos and bleakness of reality into a simple, hopeful tale, and at the centre it places its star – wonderful, precious me – who it sets on a series of goals that become the plots of our lives. Story is what brain does. It is a ‘story processor’, writes the psychologist Professor Jonathan Haidt, ‘not a logic processor’.