Cherot and F. Rouviere. I wish to thank all of the organizers and participants of these events for their great feedback and rich discussion. This research has also greatly benefited from the experience of teaching it during a course at Sciences Po Law School. My warmest thanks to my students for their insightful comments. Friends and colleagues have offered to read the text and provided very helpful-sometimes crucial-comments and critiques. For this, I am deeply grateful to