There are many interesting formations that might be called networked phenomena. Homophily and the tendency towards triad closure. Scott Feld’s Rule (I’m more likely to make friends with someone who has more friends than me). Small world phenomena (those 6 degrees of separation). “The Strength of Weak Ties” (reportedly the most cited sociology paper in history). In all, a series of social forms that complicates typical binarisms like individual versus group.
All of these have their positive and negative sides, but few networked phenomena have been met with more ambivalence than that of contagion, the idea that things (memes, viral videos, fashion) spread from person to person in a way that is similar to an epidemic; that is, people believe certain things or participate in certain behaviors without necessarily having “decided” to do so. Instead, the chances of “contracting” an idea, a fashion, or a new technology come down to the structural position in a network—a question, for example, of k-threshold models, where the chance of contagion depends upon the topology of connections vis-à-vis other infected nodes.
Given its identification with epidemiological contagion, it is not surprising that social contagion brings with it a negative valence, conjuring up fears of loss of autonomy, of being reduced to “hosts” for the “viral” propagation of information in a network. Contagion is at the heart of the fear and fascination of the zombie. It is also part of the latest panic in politics, one that centers on a vision of an electorate easily manipulated through fake news propagated through social media.
The views, opinions and positions expressed by these authors and blogs are theirs and do not necessarily represent that of the Bioethics Research Library and Kennedy Institute of Ethics or Georgetown University.