
Rationality

If your current computer stops working, you can’t conclude that everything about the current system is wrong and that you need a new system without an AMD processor, an ATI video card, a Maxtor hard drive, or case fans—even though your current system has all these things and it doesn’t work. Maybe you just need a new power cord.
Eliezer Yudkowsky • Rationality
Early studiers of cults were surprised to discover than when cults receive a major shock—a prophecy fails to come true, a moral flaw of the founder is revealed—they often come back stronger than before, with increased belief and fanaticism. The Jehovah’s Witnesses placed Armageddon in 1975, based on Biblical calculations; 1975 has come and passed.
... See moreEliezer Yudkowsky • Rationality
Not as a moral point, but as a strict question of prior probability, we should ask what the Enemy might believe about their situation that would reduce the seeming bizarrity of their behavior. This would allow us to hypothesize a less exceptional disposition, and thereby shoulder a lesser burden of improbability.
Eliezer Yudkowsky • Rationality
The New Testament, created during the time of the Roman Empire, bears some traces of modernity as a result. You couldn’t invent a story about God completely obliterating the city of Rome (a la Sodom and Gomorrah), because the Roman historians would call you on it, and you couldn’t just stone them.
Eliezer Yudkowsky • Rationality
You should be extremely suspicious if you have many ideas suggested by a source that you now know to be untrustworthy, but by golly, it seems that all the ideas still ended up being right—the Bible being the obvious archetypal example.
Eliezer Yudkowsky • Rationality
Or consider the Monty Hall problem: On a game show, you are given the choice of three doors leading to three rooms. You know that in one room is $100,000, and the other two are empty. The host asks you to pick a door, and you pick door #1. Then the host opens door #2, revealing an empty room. Do you want to switch to door #3, or stick with door #1?
... See moreEliezer Yudkowsky • Rationality
The fear of strange ideas, the impulse to conformity, has no doubt warned many potential victims away from flying-saucer cults. When you’re out, it keeps you out. But when you’re in, it keeps you in. Conformity just glues you to wherever you are, whether that’s a good place or a bad place.
Eliezer Yudkowsky • Rationality
Maier’s advice echoes the principle of the bottom line, that the effectiveness of our decisions is determined only by whatever evidence and processing we did in first arriving at our decisions—after you write the bottom line, it is too late to write more reasons above. If you make your decision very early on, it will, in fact, be based on very litt
... See moreEliezer Yudkowsky • Rationality
Your strength as a rationalist is your ability to be more confused by fiction than by reality. If you are equally good at explaining any outcome, you have zero knowledge.