By John Haldane, First Things - Take almost any area of life: agriculture and energy production, animals, art and culture, broadcasting and journalism, business and commerce, computing and robotics, crime, policing and punishment, diet and food, disability, education, health and medicine, marriage and family, politics, recreation and sport, science and technology, sex and sexuality, and war and defense. Each of these, and others besides, has become a field of ethical contest and innovation.