> but once the closed triads are more than a certain percentage the entire social network dies I'm pretty sure you're misinterpreting a research paper that I'

> but once the closed triads are more than a certain percentage the entire social network dies I'm pretty sure you're misinterpreting a research paper that I'm familiar with. A common measure of network structure is the clustering coefficient, which is the ratio of triads to all possible triads. In real networks, the average clustering coefficient is generally orders of magnitude less than 1%. Besides, the network is continually growing, and people generally continually meet new people. It's highly unlikely that the FB network is going to stagnate because "everyone already knows each other". At least not for another decade...