According to Castells, the city is not just a physical space, but also an informational system made of structural domination of the space of flows, 1 with various technological, geographical and spatial layers. Mobile interactions and communications represent an ongoing flow of social dynamics regulated by the digital mobility in the physical space of places:

The space of flows links up electronically separate locations in an interactive network that connects activities and people in distinct geographical contexts. The space of places organizes experience and activity around the confines of locality. 2

We carry flows and move across places. 3