Rules and assumptions can ruin relationships.
It is common for many families and workplaces to also rely on rules. Look into almost any classroom and you will see rules posted. The standard approach is to post rules because the assumption is that rules are the foundation for success. Rules are supposed to determine what the situation should look like, the type of behavior that is acceptable and encouraged, and rules help people work towards a common goal. In practice, however, many rules are posted in the negative of what NOT to do. This negativity is counterproductive to engendering positive motivation and good relationships in families, the workplace, and in classrooms.