Started off in the Social Networks and Multi-Agent Systems room again, a talk by Davide Donetto, about "The emergence of shared social representations in complex networks". He talked about the difference between "reified" roles, which are selected by rules according to competences, and "consensual" roles, which are freely chosen by the agents. His model involved a social network of agents, constructed with a small world distribution, so that when a new node is added, the probability of it linking to an existing node is proportional to the share of the links that node has: