According to Steven Levitsky in his book "How Democracies Die," effective democracies depend significantly on unwritten norms that, while not codified in legal documents or constitutions, are universally acknowledged and adhered to. These informal rules play an essential role in ensuring the stability and functionality of democratic systems.

In the context of American democracy, these unspoken agreements have proven crucial for its success. They create a framework that guides political behavior and helps maintain a balance of power, which is essential for a thriving democratic society. Without these informal guidelines, democratic institutions could become more susceptible to erosion and conflict.