Positive law needs both ideal justice and real-world effectiveness to be valid. If people don't follow the law or if it's not enforced, it loses its power. The actual behavior of people is more important than just what the law says on paper. Sometimes, new laws are created by people's actions, even if they're not officially written down. If there's a lot of rule-breaking and no consequences, there's a gap in the law. This means that the law, including constitutional law, can change more easily than we might think.