 This is analogous to saying that the status quo will only change if the status quo is not Pareto efficient for veto players.Tsebelis then suggests that where Pareto improvements are available, the social choice will be for a point which is Pareto efficient.He suggests that in the case where there are many such points, there will be mechanisms to determine which point is reached (although there is no explicit exposition of a bargaining analysis either co-operative or non-cooperative).