Centrality – finding key nodes

My interest in network science was, in part, inspired by my experience with hackerspaces and makerspaces. These spaces are member-run organizations that provide space and tools for do-it-yourself/technology/art projects. In 2009, I worked with several others in the Detroit area to start a space called i3 Detroit. During my time at i3 Detroit, I was struck by the creativity and innovation happening in i3 Detroit and other spaces, not just in the projects that were being created, but also in the unique types of volunteer-run, non-hierarchical organizations that were being developed. One of the keys to this innovation was the way ideas were spread within and between spaces. Ideas were spread from space to space by participants in national events and by members who went on hackerspace tours. Ideas were spread within spaces by the regulars who...