Opinions, Conflicts and Consensus: Modeling Social Dynamics in a   Collaborative Environment
  Information-communication technology promotes collaborative environments like Wikipedia where, however, controversiality and conflicts can appear. To describe the rise, persistence, and resolution of such conflicts we devise an extended opinion dynamics model where agents with different opinions perform a single task to make a consensual product. As a function of the convergence parameter describing the influence of the product on the agents, the model shows spontaneous symmetry breaking of the final consensus opinion represented by the medium. In the case when agents are replaced with new ones at a certain rate, a transition from mainly consensus to a perpetual conflict occurs, which is in qualitative agreement with the scenarios observed in Wikipedia. 
J\'anos T\"or\"ok, Gerardo I\~niguez, Taha Yasseri, Maxi San Miguel,   Kimmo Kaski, J\'anos Kert\'esz
physics.soc-ph cs.CY cs.SI nlin.AO