Podbean logo
  • Discover
  • Podcast Features
    • Podcast Hosting

      Start your podcast with all the features you need.

    • Podbean AI Podbean AI

      AI-Enhanced Audio Quality and Content Generation.

    • Blog to Podcast

      Repurpose your blog into an engaging podcast.

    • Video to Podcast

      Convert YouTube playlists to podcasts, videos to audios.

  • Monetization
    • Ads Marketplace

      Join Ads Marketplace to earn through podcast sponsorships.

    • PodAds

      Manage your ads with dynamic ad insertion capability.

    • Apple Podcasts Subscriptions Integration

      Monetize with Apple Podcasts Subscriptions via Podbean.

    • Live Streaming

      Earn rewards and recurring income from Fan Club membership.

  • Podbean App
    • Podcast Studio

      Easy-to-use audio recorder app.

    • Podcast App

      The best podcast player & podcast app.

  • Help and Support
    • Help Center

      Get the answers and support you need.

    • Podbean Academy

      Resources and guides to launch, grow, and monetize podcast.

    • Podbean Blog

      Stay updated with the latest podcasting tips and trends.

    • What’s New

      Check out our newest and recently released features!

    • Podcasting Smarter

      Podcast interviews, best practices, and helpful tips.

  • Popular Topics
    • How to Start a Podcast

      The step-by-step guide to start your own podcast.

    • How to Start a Live Podcast

      Create the best live podcast and engage your audience.

    • How to Monetize a Podcast

      Tips on making the decision to monetize your podcast.

    • How to Promote Your Podcast

      The best ways to get more eyes and ears on your podcast.

    • Podcast Advertising 101

      Everything you need to know about podcast advertising.

    • Mobile Podcast Recording Guide

      The ultimate guide to recording a podcast on your phone.

    • How to Use Group Recording

      Steps to set up and use group recording in the Podbean app.

  • All Arts Business Comedy Education
  • Fiction Government Health & Fitness History Kids & Family
  • Leisure Music News Religion & Spirituality Science
  • Society & Culture Sports Technology True Crime TV & Film
  • Live
  • How to Start a Podcast
  • How to Start a Live Podcast
  • How to Monetize a podcast
  • How to Promote Your Podcast
  • How to Use Group Recording
  • Log in
  • Start your podcast for free
  • Podcasting
    • Podcast Features
      • Podcast Hosting

        Start your podcast with all the features you need.

      • Podbean AI Podbean AI

        AI-Enhanced Audio Quality and Content Generation.

      • Blog to Podcast

        Repurpose your blog into an engaging podcast.

      • Video to Podcast

        Convert YouTube playlists to podcasts, videos to audios.

    • Monetization
      • Ads Marketplace

        Join Ads Marketplace to earn through podcast sponsorships.

      • PodAds

        Manage your ads with dynamic ad insertion capability.

      • Apple Podcasts Subscriptions Integration

        Monetize with Apple Podcasts Subscriptions via Podbean.

      • Live Streaming

        Earn rewards and recurring income from Fan Club membership.

    • Podbean App
      • Podcast Studio

        Easy-to-use audio recorder app.

      • Podcast App

        The best podcast player & podcast app.

  • Advertisers
  • Enterprise
  • Pricing
  • Resources
    • Help and Support
      • Help Center

        Get the answers and support you need.

      • Podbean Academy

        Resources and guides to launch, grow, and monetize podcast.

      • Podbean Blog

        Stay updated with the latest podcasting tips and trends.

      • What’s New

        Check out our newest and recently released features!

      • Podcasting Smarter

        Podcast interviews, best practices, and helpful tips.

    • Popular Topics
      • How to Start a Podcast

        The step-by-step guide to start your own podcast.

      • How to Start a Live Podcast

        Create the best live podcast and engage your audience.

      • How to Monetize a Podcast

        Tips on making the decision to monetize your podcast.

      • How to Promote Your Podcast

        The best ways to get more eyes and ears on your podcast.

      • Podcast Advertising 101

        Everything you need to know about podcast advertising.

      • Mobile Podcast Recording Guide

        The ultimate guide to recording a podcast on your phone.

      • How to Use Group Recording

        Steps to set up and use group recording in the Podbean app.

  • Discover
  • Log in
    Sign up free
LessWrong (Curated & Popular)

LessWrong (Curated & Popular)

Technology

"Yes, It's Subjective, But Why All The Crabs?" by johnswentworth

2023-07-31
Download Right click and do "save link as"

Some early biologist, equipped with knowledge of evolution but not much else, might see all these crabs and expect a common ancestral lineage. That’s the obvious explanation of the similarity, after all: if the crabs descended from a common ancestor, then of course we’d expect them to be pretty similar.

… but then our hypothetical biologist might start to notice surprisingly deep differences between all these crabs. The smoking gun, of course, would come with genetic sequencing: if the crabs’ physiological similarity is achieved by totally different genetic means, or if functionally-irrelevant mutations differ across crab-species by more than mutational noise would induce over the hypothesized evolutionary timescale, then we’d have to conclude that the crabs had different lineages. (In fact, historically, people apparently figured out that crabs have different lineages long before sequencing came along.)

Now, having accepted that the crabs have very different lineages, the differences are basically explained. If the crabs all descended from very different lineages, then of course we’d expect them to be very different.

… but then our hypothetical biologist returns to the original empirical fact: all these crabs sure are very similar in form. If the crabs all descended from totally different lineages, then the convergent form is a huge empirical surprise! The differences between the crab have ceased to be an interesting puzzle - they’re explained - but now the similarities are the interesting puzzle. What caused the convergence?

To summarize: if we imagine that the crabs are all closely related, then any deep differences are a surprising empirical fact, and are the main remaining thing our model needs to explain. But once we accept that the crabs are not closely related, then any convergence/similarity is a surprising empirical fact, and is the main remaining thing our model needs to explain.

Source:
https://www.lesswrong.com/posts/qsRvpEwmgDBNwPHyP/yes-it-s-subjective-but-why-all-the-crabs

Narrated for LessWrong by TYPE III AUDIO.

Share feedback on this narration.

[125+ Karma Post] ✓

view more

More Episodes

“Race and Gender Bias As An Example of Unfaithful Chain of Thought in the Wild” by Adam Karvonen, Sam Marks
2025-07-03
“The best simple argument for Pausing AI?” by Gary Marcus
2025-07-03
“Foom & Doom 2: Technical alignment is hard” by Steven Byrnes
2025-07-01
“Proposal for making credible commitments to AIs.” by Cleo Nardo
2025-06-30
“X explains Z% of the variance in Y” by Leon Lang
2025-06-28
“A case for courage, when speaking of AI danger” by So8res
2025-06-27
“My pitch for the AI Village” by Daniel Kokotajlo
2025-06-25
“Foom & Doom 1: ‘Brain in a box in a basement’” by Steven Byrnes
2025-06-24
“Futarchy’s fundamental flaw” by dynomight
2025-06-21
“Do Not Tile the Lightcone with Your Confused Ontology” by Jan_Kulveit
2025-06-19
“Endometriosis is an incredibly interesting disease” by Abhishaike Mahajan
2025-06-19
“Estrogen: A trip report” by cube_flipper
2025-06-19
“New Endorsements for ‘If Anyone Builds It, Everyone Dies’” by Malo
2025-06-18
[Linkpost] “the void” by nostalgebraist
2025-06-17
“Mech interp is not pre-paradigmatic” by Lee Sharkey
2025-06-17
“Distillation Robustifies Unlearning” by Bruce W. Lee, Addie Foote, alexinf, leni, Jacob G-W, Harish Kamath, Bryce Woodworth, cloud, TurnTrout
2025-06-17
“Intelligence Is Not Magic, But Your Threshold For ‘Magic’ Is Pretty Low” by Expertium
2025-06-17
“A Straightforward Explanation of the Good Regulator Theorem” by Alfred Harwood
2025-06-17
“Beware General Claims about ‘Generalizable Reasoning Capabilities’ (of Modern AI Systems)” by LawrenceC
2025-06-17
“Season Recap of the Village: Agents raise $2,000” by Shoshannah Tekofsky
2025-06-07
  • ←
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • →
012345678910111213141516171819

Get this podcast on your
phone, FREE

Download Podbean app on App Store Download Podbean app on Google Play

Create your
podcast in
minutes

  • Full-featured podcast site
  • Unlimited storage and bandwidth
  • Comprehensive podcast stats
  • Distribute to Apple Podcasts, Spotify, and more
  • Make money with your podcast
Get started

It is Free

  • Podcast Services

    • Podcast Features
    • Pricing
    • Enterprise Solution
    • Private Podcast
    • The Podcast App
    • Live Stream
    • Audio Recorder
    • Remote Recording
    • Podbean AI
  •  
    • Create a Podcast
    • Video Podcast
    • Start Podcasting
    • Start Radio Talk Show
    • Education Podcast
    • Church Podcast
    • Nonprofit Podcast
    • Get Sermons Online
    • Free Audiobooks
  • MONETIZATION & MORE

    • Podcast Advertising
    • Dynamic Ads Insertion
    • Apple Podcasts Subscriptions
    • Switch to Podbean
    • YouTube to Podcast
    • Blog to Podcast
    • Submit Your Podcast
    • Podbean Plugins
    • Developers
  • KNOWLEDGE BASE

    • How to Start a Podcast
    • How to Start a Live Podcast
    • How to Monetize a Podcast
    • How to Promote Your Podcast
    • Mobile Podcast Recording Guide
    • How to Use Group Recording
    • Podcast Advertising 101
  • Support

    • Support Center
    • What’s New
    • Free Webinars
    • Podcast Events
    • Podbean Academy
    • Podbean Amplified Podcast
    • Badges
    • Resources
  • Podbean

    • About Us
    • Podbean Blog
    • Careers
    • Press and Media
    • Green Initiative
    • Affiliate Program
    • Contact Us
  • Privacy Policy
  • Cookie Policy
  • Terms of Use
  • Consent Preferences
  • Copyright © 2015-2025 Podbean.com