We shape our tools and they shape us in return. Trapped in an invisible technological loop, we underestimate the pervasive impact of the tools we use, ignorant of the fact that each technological transition can change the way we act, feel or think. Worse, our understanding of technological evolutionary dynamics is still in its infancy. We are missing the equivalent of a Darwinian Theory of Evol...

Ronald J. Falk,* Mark E. Rosenberg, Jerry Yee, Patrick T. Murray, and Tod Ibrahim *University of North Carolina Kidney Center and Division of Nephrology, University of North Carolina School of Medicine, Chapel Hill, North Carolina; Division of Nephrology, University of Minnesota School of Medicine, Minneapolis, Minnesota; Division of Nephrology, Henry Ford Health Systems, Detroit, Michigan; Uni...

We analyze a collaboration network based on the Marvel Universe comic books. First, we consider the system as a binary network, where two characters are connected if they appear in the same publication. The analysis of degree correlations reveals that, in contrast to most real social networks, the Marvel Universe presents a disassortative mixing on the degree. Then, we use a weight measure to s...

Networks created and maintained by social processes, such as the human friendship network and the World Wide Web, appear to exhibit the property of navigability : namely, not only do short paths exist between any pair of nodes, but such paths can easily be found using only local information. It has been shown that for networks with an underlying metric, algorithms using only local information p...