You get into an argument with your roommate about whose turn it is to clean your shared fish tank. You have a clear memory of cleaning the tank last time, but your roommate insists that she was the one who cleaned it last time. Explain the mental processes you would use to determine whether your memory or your roommate's memory is accurate. (Do not focus on compromises or preventive measures for future conflicts such as this; focus on the ways to verify memories now.)