Thanks to Professor Rober Bertini for designing the summer school and for initiating the cooperation with the Allegro group. Recognitions, to the fantastic team that made it all happen: Giulia Reggiani, Lara Zomer and Alphonse Vial for the entire organization, and for leading the day on Physical and Perceived Networks. Victor Knoop, Marie-Jette Wierbos and Martijn Sparnaaij, thank you for contributing to the whole first day of research at the Green Village with insight on Densities of Active Mode Users. Finally, the students benefited from the guidance of Tim van Oijen during the data analysis and presentation session.