Sublime

Putting the pieces of the puzzle together, we find that real networks are governed by two laws: growth and preferential attachment.

The fancy term for this is preferential attachment, defined as: “the more connected a node is, the more likely it is to receive new links.”

ley de Metcalfe:

as cities grow and their networks evolve, the area or volume of the networks needed to keep them functionally connected tends to become smaller on a per capita basis. For example, in larger cities more people can share the same bus or segment of road or sewer pipe.

not vary.

These data make a strong case that, as human social networks grow, they necessarily lead to systems that require fewer resources per person, and produce more per person. In other words, the benefits of scale for human groups have always been there.