Bertram Turner is an anthropologist and a senior researcher in the department 'Law and Anthropology' at the Max Planck Institute for Social Anthropology in Halle, Germany. He has conducted extended field research in the Middle East and North Africa, Germany and Canada and has held university teaching positions in Munich, Leipzig and Halle and has published widely on the anthropology of law, religion, conflict, morality, development and resource extraction. Gunther Schlee is one of the Founding Directors of the Max Planck Institute for Social Anthropology in Halle, Germany. He conducted fieldwork in Kenya, Ethiopia and Sudan, and was a guest lecturer in Padang (Sumatra) and at the Ecole des Hautes Etudes en Science Sociales in Paris. Currently, he is one of the spokespersons of the International Max Planck Research School on Retaliation, Mediation and Punishment