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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 12 Jul 2019
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      A 🧵 on studies of formal logic as an embodied, situated, social, cultural, materially-mediated activity. This view contrasts with: 1 formal logics as Platonic mathematical objects 2 formal logic as an innate mental capacity

      7 replies 35 retweets 151 likes
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    2. David Chapman‏ @Meaningness 12 Jul 2019
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      🧵 inspired by @cdutilhnovaes’ _Formal Languages in Logic_, about why formality is useful. Her overall explanation of how formal rationality works is closely similar to mine in _The Eggplant_ draft, so it was exciting reading! https://amzn.to/2NQNsxa 

      2 replies 0 retweets 16 likes
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    3. David Chapman‏ @Meaningness 12 Jul 2019
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      The traditional explanation for the power of logic is “expressive precision,” but the experience of attempting to use logic in AI is that it totally fails for that. Specifically, whenever it encounters nebulosity, which is the main point of Part I of _The Eggplant_.

      1 reply 0 retweets 19 likes
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    4. David Chapman‏ @Meaningness 12 Jul 2019
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      Another traditional virtue of logic is truth preservation (true premises => true conclusions); but there are nearly no absolute truths in the eggplant-sized world, and deduction does not preserve mostly-truth. So that’s not the answer outside applications in math and CS.pic.twitter.com/JZBRjPqrUH

      4 replies 0 retweets 25 likes
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    5. David Chapman‏ @Meaningness 12 Jul 2019
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      David Chapman Retweeted David Chapman

      “Dual process theories” say we have an innate rationality module that does logic correctly, plus an irrationality module that messes it up. (This goes back to the Greeks.) In a recent 🧵 I pointed out several reasons this is wrong and has damaged cogsci.https://twitter.com/Meaningness/status/1079802460124766215 …

      David Chapman added,

      David Chapman @Meaningness
      Rationalism tends to lump all phenomena other than formal rationality as a single deficient category. “Dual process” theories systematize this error. pic.twitter.com/mCafGrQbpz
      5 replies 8 retweets 28 likes
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    6. David Chapman‏ @Meaningness 12 Jul 2019
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      @cdutilhnovaes’s book [quote below], and the others I’ll cite in this 🧵, treat logic as a culturally-evolved technology for particular sorts of reasoning. It’s something we do, not something we have or are. It’s also not something that lives in the Platonic Form Realm.pic.twitter.com/o4kxqx5KxN

      2 replies 5 retweets 34 likes
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    7. David Chapman‏ @Meaningness 12 Jul 2019
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      Mostly we do formal reasoning on paper, or a blackboard or whiteboard. Some bits are best done in the shower, but most of it critically depends on these external material technologies. Richard Feynman got this:pic.twitter.com/zAFeMumKm0

      2 replies 29 retweets 116 likes
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    8. David Chapman‏ @Meaningness 12 Jul 2019
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      Rationalism holds that rationality works by abstracting a concrete problem into an immaterial formal realm. This is a weird flex, inasmuch as modern rationalists are usually passionately committed to materialism. Can we do formal logic without spooks? Yes we can!pic.twitter.com/nOa4A8fFGZ

      5 replies 3 retweets 39 likes
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    9. CORVID-19  🦜 🐝 🦩 ☯️ 🐇  🧬  ❄️ 🦞 🧠 🦌 ☸️ 🦄 🦚‏ @harrisonpartch 12 Jul 2019
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      Replying to @Meaningness

      cough Vygotsky

      1 reply 0 retweets 1 like
      David Chapman‏ @Meaningness 12 Jul 2019
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      Replying to @harrisonpartch

      Yes, Novaes cites him, as do I.

      5:53 PM - 12 Jul 2019
      0 replies 0 retweets 0 likes

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