In the light of current urban change and its reflection of an ongoing process of metropolisation, planners are under pressure to deepen their understanding of the various types of territories and of what statistics can tell us about them. At their 33rd National Congress in Bordeaux in November , France's town planning agencies considered how to fill the gaps in territorial expertise and mobilise contributions from the many interacting partners concerned: users, researchers, the private sector, journalists, etc. Their conclusion: policy also hinges on the methods used. The Age of Networked Engineering For the 33rd National Congress of French Town Planning Agencies in Cenon, one of the twenty-seven municipalities making up the Bordeaux Urban Community, we had decided that the focus would be current measurement tools and modes of action. Our Cities: Figuring Things Out was how we summed up the theme.