When cloud formations take physical shape, neither their scale nor duration has an upper bound: We may begin to see cloud towns, then cloud cities, and ultimately cloud countries. At first this sounds rather implausible.
..The concept of migrating our lives to the cloud is much more than a picturesque metaphor, and actually amenable to quantitative study. Though the separation between our bodies is still best characterized by the geographical distance between points on the surface of the earth, the distance between our minds is increasingly characterized by a completely different metric: the geodesic distance, the number of degrees of separation between two nodes in a social network. Importantly, this geodesic distance is just as valid a mathematical metric as the geographical. In fact, there are entire conferences devoted to cloud cartography, in which research groups from Stanford to Carnegie Mellon to MIT present the first maps of online social networks — mapping not nation states but states of mind.