If you're in a gnarly disagreement and you feel like the conversation keeps going in circles, here's one way out: tease apart the questions that get raised in the disagreement into FACTS, VALUES, and PROPOSALS. Each category represents a realm of disagreement that get resolved in different ways. You resolve a disagreement about facts by looking them up and doing scientific research. You resolve a disagreement about values by examining core beliefs and sharing experiences that formed your beliefs. And you resolve a disagreement about proposals by making a prediction and then seeing how the world unfolds.