Thesis: In the face of the same data, two rational people will make the same decision.
Implication: When two people disagree on something it is likely that there is something one knows that the other does not.
Strategy: When two people disagree, each should strive to reveal what is relevant that s/he knows and that the other does not until both know everything that the other knows.
Conclusion: Agreement should be reached if both are rational; that is, neither is acting based on self-interest, emotion, fear, etc.
Implication: When you reach an impasse with someone on an important matter, reflect on what is important that you know that the other party might not know and offer to share it. Similarly, ask the other party what s/he knows that is important that you may not know. Continue reading How rational actors can reach agreement.