« The discovery of scale-free networks induced a paradigm shift: They taught us that the many complex webs surrounding us are far from random, but are characterized by the same robust and universal architecture. I am repeatedly asked a few basic questions when I lecture about networks: Why did it take this long?Why did we have to wait until 1999 to discover the impact of hubs and power laws on the behavior of complex networks? The answer is simple: We lacked a map », Albert-László Barabási, L...