Fundamental Question of Rationality

The Fundamental Question of Rationality is: "Why do you believe what you believe?", or alternatively, "What do you think you know, and how do you think you know it?"

References

• The Fundamental Question by MBlume: A
• Quantum Non-Realism by Eliezer Yudkowsky: "I sometimes go around saying that the fundamental question of rationality is: Why do you believe what you believe?"