Public policy strongly supports the principle of Res Judicata because it safeguards the integrity of the judicial system by ensuring that once a dispute has been fairly decided, it should not be reopened endlessly. Allowing repeated litigation on the same issues would lead to conflicting judgments, harassment of parties, and an endless cycle of disputes, undermining confidence in the rule of law. By enforcing finality of judgments, Res Judicata conserves judicial resources, prevents unnecessary delays, and enables courts to focus on fresh cases rather than revisiting settled ones. From a public policy perspective, it ensures certainty, stability, and order in society, since people can rely on judicial decisions as conclusive and binding. Thus, Res Judicata is not just a technical rule—it is a principle rooted in fairness and efficiency, vital for maintaining trust in the justice system.