The edited volume goes back to a conference held at Tokyo University, September 12-13, 2009; the conference also was part of Durand-Guédy’s research project “Ruling from the Outside” (see above, R4-1N4-6). The introduction, “Location of Rule”, furnishes some more theoretical background thoughts and puts Durand-Guédy’s research project into a larger context. Durand-Guédy identifies Jean Aubin as one of the crucial figures, he quotes Aubin at some length for the general history of the situation..