True. So in the process of deceiving yourself, you must first become irrational. The problem is then protesting that you are “still a reasonable person.”
Not quite; you might choose to deceive yourself for decision-theoretic reasons. For example, the Zoroastrian Inquisition might be going around with very good lie detectors and punishing anyone who doesn’t believe. We usually equate rationality with true beliefs, but this is only an approximation; decision theory is more fundamental than truth.
Not quite; you might choose to deceive yourself for decision-theoretic reasons. For example, the Zoroastrian Inquisition might be going around with very good lie detectors and punishing anyone who doesn’t believe. We usually equate rationality with true beliefs, but this is only an approximation; decision theory is more fundamental than truth.
That only seems to mean that you were a reasonable person.