In my efforts to explore in greater detail the value of the social network phenomena to the enterprise, I came across this post from Andrew McAfee, of the Harvard Business School, in which he had already analyzed and discussed the topic at length.
As I’ve written before, social networks let users build a network of friends, keep abreast of what that network is up to, and even exploit it by doing things like posting a question that all friends will see. All of these activities, especially the latter two, seem like they’d be highly valuable within a company, especially a large and/or geographically distributed one where you can’t access all colleagues just by bumping into them in the hallway.
In a key part of his thesis, McAfee cites work by Mark Granovetter, a sociologist now at Stanford who, in 1973 wrote "The Strength of Weak Ties", a seminal article that’s been cited an incredible 5111 times according to Google Scholar.
Companies that rely heavily on innovation have always spent a great deal of time, money, and effort on ways to help knowledge workers interact better with their close colleagues. They assemble cross-functional teams and try to make sure that these groups have enough of the right kinds of diversity (whatever that is). They hold brainstorming sessions and off-sites where coworkers can interact with the same set of colleagues, but differently.
Granovetter’s great insight in "The Strength of Weak Ties" and later work was that these activities help strengthen already strong ties, but that weak ties might actually be the more important ones for innovation and knowledge sharing. Strong ties and weak ties are exactly what they sound like. Strong ties between people arise from long-term, frequent, and sustained interactions; weak ties from infrequent and more casual ones. The ‘problem’ with strong ties is that if persons A and B have a strong tie, they’re also likely to be strongly tied to all members of each other’s networks. In other words, there’s likely to be a lot of overlap in their friendship circles.
This might be a good thing in many ways, but it’s bad news if A needs a piece of knowledge that she can’t find inside her own friendship circle. Because of the overlap, B’s circle is likely to be redundant with A’s, and so unhelpful to her. In other words, her tie to B does her little good in her search for knowledge. If A and C have a weak tie, however, many of C’s friends are likely to be strangers to A, and so are good resources as she looks to inform herself.
A tidy summary of Granovetter’s conclusion is that strong ties are unlikely to be bridges between networks, while weak ties are good bridges. Bridges help solve problems, gather information, and import unfamiliar ideas. They help get work done quicker and better. The ideal network for a knowledge worker probably consists of a core of strong ties and a large periphery of weak ones. Because weak ties by definition don’t require a lot of effort to maintain, there’s no reason not to form a lot of them (as long as they don’t come at the expense of strong ties).
The implication for social network applications is obvious: Facebook and its peers should be highly valuable for businesses because they’re tools for increasing the density of weak ties within a company, as well as outside it.