Tag Archives: social network analysis

Duncan Watts: Small World Networks, Epidemics, Cascades, and Innovation

Duncan Watts wrote a terrific introduction to social network analysis (SNA) in 2003 called “Six Degrees: The Science of a Connected Age”. In the book, Watts describes the mathematical origins of SNA and the role of “small world networks” in epidemics, cascades, and innovation.

Epidemic modeling can be used to model not only the outbreak of diseases like SARS, but also the diffusion of an innovation. One interesting point that Watts raises is that “on a small-world network, the key to explosive growth of a disease is the shortcuts.” This leads me to ask what shortcuts exist between an innovator and a market. Is there a way to make the diffusion of an innovation more efficient?

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