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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 23 Aug 2018
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    David Chapman Retweeted Ashley Smart

    We can’t accurately simulate the physical behavior even of pure water. (Yet; and from other reading about this I’ve done recently, it’s a long way off.) Therefore: Fantasies about simulating brains are fantastical.https://twitter.com/ashleythesmart/status/1032294373382340608 …

    David Chapman added,

    Ashley Smart @ashleythesmart
    My final piece for @PhysicsToday, a tale about the scientific process in all its messy glory: The war over supercooled water https://physicstoday.scitation.org/do/10.1063/PT.6.1.20180822a/full/#.W32FOPvzIcQ.twitter …
    Show this thread
    6:29 AM - 23 Aug 2018
    • 25 Retweets
    • 90 Likes
    • Pimpanicaillle eigenrobot TOM JAUNCEY Winning Emergence The Dark Matrix Daniel Nazer John Bergmayer Nathan Spears Andrew Kemendo
    8 replies 25 retweets 90 likes
      1. David Chapman‏ @Meaningness 23 Aug 2018
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        Water is a knock-down argument against reductionism as a theory of how rationality works. It’s astonishing what we DON’T know about water. We can’t even simulate individual isolated water molecules accurately. http://www1.lsbu.ac.uk/water/water_molecule.html …pic.twitter.com/TXhrCsw5HP

        3 replies 10 retweets 42 likes
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      2. David Chapman‏ @Meaningness 24 Aug 2018
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        Replying to @browserdotsys

        That’s because computers are human-built artifacts that millions of engineer-years have gone into making conform to the digital abstraction.

        1 reply 0 retweets 8 likes
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      2. David Chapman‏ @Meaningness 23 Aug 2018
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        Replying to @LexCorvus

        Fair; missing from my tweet are unstated observations about why brains are more difficult than water

        1 reply 0 retweets 5 likes
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      1. Derek. JUST "Derek. JUST "Derek. JUST "Derek. JUST‏ @PereGrimmer 23 Aug 2018
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        Replying to @Meaningness

        Oh, so this is why ai does not have fluid intelligence.

        0 replies 0 retweets 7 likes
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      1. Szymon Majewski‏ @brewingsense 23 Aug 2018
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        Replying to @Meaningness

        From the story it seems like they run MCMC simulations without checking if the stationary distribution is the one they wanted, just because it "made sense". Gotta love physicists.

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      1. John  👁 💚 🔮 ⚕ ⚡ ☀️ 🌳‏ @johnhanacek 23 Aug 2018
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        Replying to @Meaningness

        Yes this is so important! The fidelity of simulating genuine interacting physics (not abstracted approximations) is not here in classical computation! People are forgetting the astounding density of the analog chemical gradients at work in human brain.DNC https://arxiv.org/abs/1312.4455 

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      1. Erez Kaminski‏ @erez_kaminski 23 Aug 2018
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        Replying to @Meaningness @dougvk

        #quasistatic

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      1. Francesca Pallopides‏ @FPallopides 23 Aug 2018
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        Replying to @Meaningness

        Getting closer though 😋 (not to dispute your actual point) http://visualcomputing.ist.ac.at/publications/2018/WSW/ …

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