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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 19 Apr 2018
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      The Raven Paradox: under most theories of scientific induction, observing a purple eggplant (a non-black non-raven) is evidence that all ravens are black. Most/all attempted solutions depend on random object sampling, which seems impossible. https://en.wikipedia.org/wiki/Raven_paradox …pic.twitter.com/p5waFK5VHg

      5 replies 7 retweets 40 likes
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    2. Fakey Fakeson‏ @admittedlyhuman 19 Apr 2018
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      Replying to @Meaningness

      I know you hate bayesianism but doesn't it solve this particular problem quite cleanly?

      1 reply 0 retweets 2 likes
    3. David Chapman‏ @Meaningness 19 Apr 2018
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      Replying to @admittedlyhuman

      Only if you make a bunch of sampling assumptions, which are not realistic in general. This explanation is not great, but it’s a start: https://en.wikipedia.org/wiki/Raven_paradox#Role_of_background_knowledge …

      1 reply 0 retweets 0 likes
    4. Fakey Fakeson‏ @admittedlyhuman 19 Apr 2018
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      Replying to @Meaningness

      ok but if there are very few non-black things and tons and tons of ravens, shouldn't we actually bite the bullet?

      2 replies 0 retweets 1 like
    5. David Chapman‏ @Meaningness 19 Apr 2018
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      Replying to @admittedlyhuman

      If you somehow know ahead of time how many things there are, and how many of them are likely to be black and/or ravens, then this sort of argument can work. But most scientific induction cases are not like that.

      1 reply 1 retweet 3 likes
    6. Fakey Fakeson‏ @admittedlyhuman 19 Apr 2018
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      Replying to @Meaningness

      well why not state the paradox about something that we don't have a pretty good sense that non-black things outnumber ravens?

      2 replies 0 retweets 0 likes
    7. David Chapman‏ @Meaningness 19 Apr 2018
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      Replying to @admittedlyhuman

      Another problem is that, by the same argument, seeing a purple eggplant is evidence that all ravens are green. (Right? I’ve had a long day, maybe I’m not doing this correctly.)

      3 replies 0 retweets 0 likes
    8. Sam Burnstein‏ @GrumplessGrinch 19 Apr 2018
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      Replying to @Meaningness @admittedlyhuman

      This seems true. Just, y'know, weak evidence.

      1 reply 0 retweets 1 like
    9. David Chapman‏ @Meaningness 19 Apr 2018
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      Replying to @GrumplessGrinch @admittedlyhuman

      My prior is that approximately measure zero of working scientists would accept this.

      1 reply 0 retweets 0 likes
    10. Fakey Fakeson‏ @admittedlyhuman 19 Apr 2018
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      Replying to @Meaningness @GrumplessGrinch

      working scientists are not epistemic philosophers

      1 reply 0 retweets 0 likes
      David Chapman‏ @Meaningness 19 Apr 2018
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      Replying to @admittedlyhuman @GrumplessGrinch

      Right. On the other hand, most professional epistemologists also think purple eggplants being evidence for green ravens is ridiculous.

      6:29 PM - 19 Apr 2018
      2 replies 0 retweets 0 likes
        1. New conversation
        2. Fakey Fakeson‏ @admittedlyhuman 19 Apr 2018
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          Replying to @Meaningness @GrumplessGrinch

          people have a tendency to neglect negligibly small numbers and round them off to zero

          1 reply 0 retweets 0 likes
        3. Fakey Fakeson‏ @admittedlyhuman 19 Apr 2018
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          Replying to @admittedlyhuman @Meaningness @GrumplessGrinch

          generally not a problem except when people come up with paradoxes. see also: motion is impossible

          0 replies 0 retweets 1 like
        4. End of conversation

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