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Meaningness's profile
David Chapman
David Chapman
David Chapman
@Meaningness

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David Chapman

@Meaningness

Better ways of thinking, feeling, and acting—around problems of meaning and meaninglessness; self and society; ethics, purpose, and value.

meaningness.com/about-my-sites
Joined September 2010

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    1. David Chapman‏ @Meaningness 28 May 2018
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      Replying to @ESYudkowsky @juliagalef

      I misunderstood you as saying that it was a true account of reality (and not merely useful in practice). I guess I am missing your point if that is not the case?

      1 reply 0 retweets 0 likes
    2. Eliezer Yudkowsky‏Verified account @ESYudkowsky 28 May 2018
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      Replying to @Meaningness @juliagalef

      I'm missing your point because I don't understand what it means for decision theory to be a "true account of reality", and hence I can neither confirm nor deny that I believe this to be the case.

      2 replies 0 retweets 0 likes
    3. David Chapman‏ @Meaningness 28 May 2018
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      Replying to @ESYudkowsky @juliagalef

      Oh well. I guess we’re both talking past each other. It’s a bit puzzling. I can usually eventually understand other people’s worldviews, but I find yours unusually resistant :)

      2 replies 0 retweets 1 like
    4. José Luis Ricón (Artir)‏ @ArtirKel 28 May 2018
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      Replying to @Meaningness @ESYudkowsky @juliagalef

      (?) It sounds like 'true theory of reality' is something that could be occupied only by a final theory of physics. Decision theory just tells you the objectively best way of acting to satisfy a set of preferences.

      1 reply 0 retweets 0 likes
    5. David Chapman‏ @Meaningness 28 May 2018
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      Replying to @ArtirKel @ESYudkowsky @juliagalef

      “Objectively best” assuming a set of axioms is satisfied. There can sometimes be a bait-and-switch or motte-and-bailey here when you try to apply this to a concrete real-world situation.

      1 reply 0 retweets 2 likes
    6. José Luis Ricón (Artir)‏ @ArtirKel 28 May 2018
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      Replying to @Meaningness @ESYudkowsky @juliagalef

      Do you have a specific example in mind?

      1 reply 0 retweets 0 likes
    7. David Chapman‏ @Meaningness 28 May 2018
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      Replying to @ArtirKel @ESYudkowsky @juliagalef

      Well, to get decision theory to apply, you have to characterize the situation in terms of a set of well-defined actions, well-defined outcomes, well-defined goodnesses, and you need some meaningful way of estimating probabilities. None of those are objectively given.

      2 replies 0 retweets 0 likes
    8. David Chapman‏ @Meaningness 28 May 2018
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      Replying to @Meaningness @ArtirKel and

      Writing this tweet, I have an unbounded number of possible things to say; an inconceivable set of possible outcomes; no clearly-defined goals; and any numerical probabilites would be meaningless. Do you know about aardvark cucumbers?

      2 replies 0 retweets 0 likes
    9. José Luis Ricón (Artir)‏ @ArtirKel 28 May 2018
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      Replying to @Meaningness @ESYudkowsky @juliagalef

      That is, an epistemic, not ontological problem. One can hold that 1)DT is the best way of deciding, objectively 2)DT cannot be applied in its textbook form, just approximated As GA Cohen said, just because one cannot reach some tasty grapes doesn't mean they are less tasty

      3 replies 0 retweets 0 likes
    10. David Chapman‏ @Meaningness 28 May 2018
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      Replying to @ArtirKel @ESYudkowsky @juliagalef

      If you define “best way of deciding” simply as “deciding according to what DT says” then that is the best way of deciding. But if no physically realizable agent can do that, this is meaningless.

      1 reply 0 retweets 0 likes
      David Chapman‏ @Meaningness 28 May 2018
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      Replying to @Meaningness @ArtirKel and

      It becomes meaningful only if you can argue that approximating DT is both (1) practical and (2) approximately optimal according to some criterion other than “approximates DT.” That is true in some situations, and not in others.

      8:18 PM - 28 May 2018
      0 replies 0 retweets 1 like

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