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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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    David Chapman‏ @Meaningness 21 Aug 2015
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    🆕 “Probability theory does not extend logic”: I dispel some common rationalist misconceptions! http://meaningness.com/probability-and-logic … ∀

    2:58 PM - 21 Aug 2015
    • 8 Retweets
    • 16 Likes
    • Rajeev Ramachandran Javier Perez Alvarez JASR Samuel Gil Zorro guardapavos 🏠 Quedarse en casa peñi José Luis Ricón (Artir) Mike Slaton Member Of Species [no such person]
    7 replies 8 retweets 16 likes
      1. New conversation
      2. Abram Demski‏ @abramdemski 21 Aug 2015
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        Replying to @Meaningness

        @Meaningness I agree with everything in the article so far, and I work in the area of combining probability and logic. (skimming some)

        1 reply 0 retweets 0 likes
      3. David Chapman‏ @Meaningness 21 Aug 2015
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        Replying to @abramdemski

        @abramdemski good! Please let me know if you find any errors, or have other feedback!

        2 replies 0 retweets 0 likes
      4. 11 more replies
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      2. Vlad Tarko  🌐  🏗️  🚀‏ @vladtarko 24 Aug 2015
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        Replying to @Meaningness

        @Meaningness @themattsimpson This is based on misunderstanding. 'For all' and 'exists' are defined in prop. logicpic.twitter.com/C31gMNyUuX

        1 reply 0 retweets 0 likes
      3. David Chapman‏ @Meaningness 24 Aug 2015
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        Replying to @vladtarko

        @vladtarko @themattsimpson No. This equivalence only works in a finite domain.

        2 replies 0 retweets 0 likes
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      2. David Chapman‏ @Meaningness 21 Aug 2015
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        Replying to @Meaningness

        TBH, I’m not sure how common these misconceptions are—but they were foundational for the #LessWrong worldview, which has had some influence.

        2 replies 0 retweets 0 likes
      3. David Chapman‏ @Meaningness 21 Aug 2015
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        Replying to @Meaningness

        “Cox’s Theorem” is something you may have heard me ranting about obscurely. This, finally, is my explanation: http://meaningness.com/probability-and-logic …

        1 reply 0 retweets 1 like
      4. 3 more replies
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      2. @joXn@weirder.earth‏ @joXn 22 Aug 2015
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        Replying to @Meaningness

        @Meaningness I’d say you have to give a nod to the most important and useful thing that is “like” probability theory: quantum mechanics.

        1 reply 0 retweets 0 likes
      3. @joXn@weirder.earth‏ @joXn 22 Aug 2015
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        Replying to @joXn

        @Meaningness Aaronson (natch) has a good overview of what kind of generalization of probability quantum mechanics is: http://www.scottaaronson.com/democritus/lec9.html …

        1 reply 0 retweets 0 likes
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      1. David Chapman‏ @Meaningness 21 Aug 2015
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        @wargfranklin :-) any advice about how to proceed?

        0 replies 0 retweets 1 like
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      2. Vlad Tarko  🌐  🏗️  🚀‏ @vladtarko 24 Aug 2015
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        Replying to @Meaningness

        @Meaningness More intuitively: syllogisms are described with set th, which is expanded into fuzzy sets, & prob th is special case of fuzzy

        1 reply 0 retweets 0 likes
      3. David Chapman‏ @Meaningness 24 Aug 2015
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        Replying to @vladtarko

        @vladtarko No, fuzzy is a different, incompatible system.

        1 reply 0 retweets 0 likes
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