Article 1: No Time Paradoxes
No time traveler shall attempt to kill their own grandparents. Any attempts to do so will result in an immediate ban from the Time Traveler's Union (TTU) and a stern letter to the local Time Police Department (TPD).
Article 2: Respect for Historical Landmarks
No time traveler shall tamper with, deface, or replace any historical landmark or monument. This includes but is not limited to: