Individuals in interaction with changing situations adapt through a process of "role bargaining". Once the roles are established, they create norms that guide further action and are thus institutionalized, creating stability across social interactions. Where the adaptation process cannot adjust, due to sharp shocks or immediate radical change, structural dissolution occurs and either new structures (or therefore a new system) are formed, or society dies. This model of social change has been described as a "moving equilibrium", and emphasizes a desire for social order.