Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.
  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
Meaningness's profile
David Chapman
David Chapman
David Chapman
@Meaningness

Tweets

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

Tweets

  • © 2020 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Julia Galef‏Verified account @juliagalef 30 Jan 2019
      • Report Tweet
      • Report NetzDG Violation

      Julia Galef Retweeted Paul Graham

      For a long time I thought ppl were saying dumb things about rationality, until I realized they were using a different definition of rationality from me. I think their definition is something like "If social consensus is that an idea is unpromising, then that idea is irrational"https://twitter.com/paulg/status/1090608908534800384 …

      Julia Galef added,

      Paul GrahamVerified account @paulg
      Airbnb for example. What rational person would work on such an unpromising idea? But we could see that they were like us in being really into their apparently unpromising idea, so we suspended our disbelief.
      Show this thread
      26 replies 50 retweets 458 likes
      Show this thread
    2. Julia Galef‏Verified account @juliagalef 30 Jan 2019
      • Report Tweet
      • Report NetzDG Violation

      That definition of rationality leads to people saying things like... "Steve Jobs had the irrational belief that people could finish a project really fast if they tried. They didn't believe him, but he kept turning out to be right. That proves that irrationality can be beneficial"

      6 replies 2 retweets 76 likes
      Show this thread
    3. Julia Galef‏Verified account @juliagalef 30 Jan 2019
      • Report Tweet
      • Report NetzDG Violation

      The definition I'd been using is the decision science one -- forming beliefs about the world as accurately as you can, given your priors & the information available to you (epistemic rationality), and making decisions that maximize your expected utility (instrumental rationality)

      10 replies 9 retweets 148 likes
      Show this thread
    4. Julia Galef‏Verified account @juliagalef 30 Jan 2019
      • Report Tweet
      • Report NetzDG Violation

      Admittedly, under that definition, it's tricky to know for sure if someone's beliefs or decisions are rational. It's more of a normative ideal than an easily applicable criterion you can use to judge people's actual beliefs/decisions.

      4 replies 2 retweets 61 likes
      Show this thread
    5. Julia Galef‏Verified account @juliagalef 30 Jan 2019
      • Report Tweet
      • Report NetzDG Violation

      It's tricky because, e.g., you don't know what someone's utility function is. They might be more risk-seeking than you, or derive more utility from working on a weird/cool/unique project than you do. A decision that would be irrational for you might be rational for them.

      11 replies 2 retweets 75 likes
      Show this thread
    6. Julia Galef‏Verified account @juliagalef 30 Jan 2019
      • Report Tweet
      • Report NetzDG Violation

      Oh, another definition ppl use is "A decision is rational iff you can explain why it's good in a way that will make sense to other people." Problem is, our beliefs about the world are based on intuitions developed over years of experience, which we can't easily articulate

      5 replies 1 retweet 107 likes
      Show this thread
    7. Julia Galef‏Verified account @juliagalef 30 Jan 2019
      • Report Tweet
      • Report NetzDG Violation

      Anyway, all of this is part of why I've been increasingly avoiding the word "rational". Too many hard-to-resolve misunderstandings.

      20 replies 4 retweets 112 likes
      Show this thread
      David Chapman‏ @Meaningness 31 Jan 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @juliagalef

      Reflecting on this, and wondering if I should do likewise. What alternatives or workarounds have you come up with? (So far the best I’ve managed is to define “rational” explicitly and draw distinctions with several related concepts, eg “mere reasonableness.)

      8:49 AM - 31 Jan 2019
      • 6 Likes
      • The Effetist Noah Erlich will minshew Ian Hines against utopia 🏴 Carnun Marcus-Page
      0 replies 0 retweets 6 likes

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2020 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info