-_Realistically_ ... no. These two posts _can't_ both be right. In itself, this isn't a problem: people change their minds sometimes, which is great! But when people _actually_ change their minds (as opposed to merely changing what they say in public for political reasons), you expect them to be able to _acknowledge_ the change, and hopefully explain what new evidence or reasoning brought them around. If they can't even _acknowledge the change_, that's pretty Orwellian, like O'Brien trying to claim that the photograph is of different men who just coincidentally happen to look like Jones, Aaronson, and Rutherford.
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-And if a little bit of Orwellianism on specific, narrow, highly-charged topics might be forgiven—because everyone else in your Society is doing it, and you would be punished for not playing along, an [inadequate equilibrium](https://equilibriabook.com/) that no one actor has the power to defy—might we not expect the father of the "rationalists" to stand his ground on the core theses of his ideology, like whether telling the truth is good?
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-I guess not! ["Doublethink (Choosing to be Biased)"](https://www.lesswrong.com/posts/Hs3ymqypvhgFMkgLb/doublethink-choosing-to-be-biased) is _still up_ and not retracted, but that didn't stop Yudkowsky from [endorsing everything Xu said](https://twitter.com/ESYudkowsky/status/1436025983522381827) about "whether some categories facilitate inferences that _do_, on the whole, cause more harm than benefit, and if so, whether it is 'rational' to rule that such inferences should be avoided when possible" being different cruxes than "whether 'rational' thinking is 'worth it'".
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-I don't doubt Yudkowsky could come up with some clever casuistry why, _technically_, the text he wrote in 2007 and the text he endorsed in 2021 don't contradict each other. But _realistically_ ... again, no.
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-I don't, actually, expect people to spontaneously blurt out everything they believe to be true, that Stalin would find offensive. "No comment" would be fine. Even selective argumentation that's _clearly labeled as such_ would be fine. (There's no shame in being an honest specialist who says, "I've mostly thought about these issues though the lens of ideology _X_, and therefore can't claim to be comprehensive; if you want other perspectives, you'll have to read other authors and think it through for yourself.")
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-What's _not_ fine is selective argumentation while claiming "confidence in [your] own ability to independently invent everything important that would be on the other side of the filter and check it [yourself] before speaking" when you _very obviously have done no such thing_.