Their point was that people don't respect laws when laws are as absurd as this one. It undermines peoples' beliefs that they should follow the law when: 1) It'

Their point was that people don't respect laws when laws are as absurd as this one. It undermines peoples' beliefs that they should follow the law when: 1) It's absurd to the general population 2) It can't even be enforced >undermine communal belief in the importance and relevance of laws Laws like this undermine the common-held belief that laws are important or relevant. Because everyone breaks the law and it's not enforced - which makes the law not important and not relevant.