On the most natural terms, a decision making system is evaluated based on it's ability to direct the best effective actions that will produce maximum ROI (Return Of On Investment) for the person who evaluate the system. when we calculate investment, the efforts put into the decision system is also calculated. If the system is demands high investment of resources to achieve effective solutions, it over all evaluation will decrees. This actual evaluation can change from person to person. some will have more of a need to a clear and simple decision making process (usually conservatives and action driven personalities) others may want a more complex and subtle and participatory decision making, due to their need to explore and experience before omitting to actions (these will be usually liberals and especially people with ADD). A more complex account of the benefits and investment are describe in "[[Participation function|participation function]]"". When a a group is trying to decide the legitimacy of decision system, it will evaluate it according to the ability the system to benefit individuals and coalitions in the group.