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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 11 Jan 2019
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      Pit-traps for rationalists: the seductive appeal of seemingly-universal frameworks that hardly ever work in practice. You can waste your entire career on one. You can waste an entire academic discipline and billions of dollars of research funding on one. https://www.ribbonfarm.com/2019/01/10/remembering-pierre-kabamba/ …pic.twitter.com/GDMTGUSyTg

      9 replies 37 retweets 145 likes
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    2. David Chapman‏ @Meaningness 11 Jan 2019
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      Black holes in idea-space: singularities at the bottom of gravitational wells that suck in any vaguely similar concept. Cox’s Theorem, e.g.: once you begin to characterize uncertainty in terms of real numbers, inevitably you fall into probability. https://meaningness.com/probability-and-logic …pic.twitter.com/ORnXfsYA8o

      1 reply 6 retweets 24 likes
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    3. David Chapman‏ @Meaningness 11 Jan 2019
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      If you start to “represent knowledge,” you inevitably fall into predicate calculus, a supermassive galactic attractor. In which case “reasoning” is logical deduction. Which… almost never works. Probability theory sometimes works, but *most* uncertainty doesn’t work like that.pic.twitter.com/BdYnZeL4ad

      3 replies 6 retweets 25 likes
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    4. David Chapman‏ @Meaningness 11 Jan 2019
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      Project: a list of rationalist pit-traps, with a brief explanation the circumstances in which each works in practice. • Decision theory • Function approximation • Objective-function maximization • State-space search • Kalman filters • … add your favorite here?

      7 replies 5 retweets 46 likes
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      David Chapman‏ @Meaningness 11 Jan 2019
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      Some AI people got sucked into Kalman filters back in the 80s. You can see *anything* as a Kalman filter, somehow! “You’ve reinvented Kalman filters!” they said about my thesis, despite there being no continuous quantities in either the system’s domain or the AI agent.

      12:05 PM - 11 Jan 2019
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      • aiju Pasha Kamyshev Corn Woman 🌽 Blessed & Lucky GRIT Nilam Guidi Which Way, Western World? stupid twitt account Andrew Cutler Stephen Pimentel
      2 replies 2 retweets 11 likes
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        2. David Chapman‏ @Meaningness 11 Jan 2019
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          A rationalist pit-trap has a formal domain of applicability, though it mostly doesn’t work well even there. If you fall into the pit, you apply your pet framework well outside its formal domain, by wishful thinking & metaphor. Hallucinating Kalman filters in discrete systems.

          2 replies 2 retweets 9 likes
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        3. David Chapman‏ @Meaningness 11 Jan 2019
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          If all you have is hammers, all you see is nails, obvs. Someone who actually understands the situation needs to decide whether you have nails, rails, snails, or pails. This is what “meta-rational competence” means. They don’t teach it in STEM school.https://meaningness.com/metablog/meta-rationality-curriculum …

          5 replies 3 retweets 28 likes
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        4. End of conversation
        1. Antti Rasinen‏ @arsatiki 11 Jan 2019
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          Replying to @Meaningness

          This blows my mind. It’s like going nuts about fire or the wheel

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