Appendix 1: A Brief History of Social Network Analysis1
Arguably, the study of networks dates to the mid-18th century and the East Prussian city of Konigsberg. Among the sights of the city were seven bridges across the Pregel River, which connected the two river banks and two islands in the middle of the river. A familiar conundrum for the inhabitants was whether it was possible to cross all the bridges in a single walk without re-crossing any of them. In 1735 Leon Euler demonstrated why such a walk was, in fact, impossible, and in the process invented network theory.
Social Network Analysis emerged from the social science disciplines of psychology (specifically Gestalt psychology and social psychology), sociology ...
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