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    Wait But Why

    waitbutwhy.com · Personal blog · on HN since 2013

    Tim Urban writes illustrated, long-form explainers on topics like AI, procrastination, the Fermi paradox, Elon Musk, and politics.

    Visit blogRSSHN submissions
    Writing & ThinkingCulture & Society
    What HN says

    Commenters list it as a favorite for simple but deep explanations, especially the Musk series, though one thinks later posts declined.

    Stats for nerds
    797HN people shared it
    570linked in comments
    4.4Kstory points
    Aug 2026last shared
    2016people per year2026

    Top posts on HN

    1. 1
      How to Pick Your Life Partner (2014)
      11 people · 376 points · first shared 2014 · 209 comments on HN
    2. 2
      The Fermi Paradox
      53 people · 333 points · first shared 2014 · 165 comments on HN
    3. 3
      If Andromeda Were Brighter, This is What You’d See (2014)
      1 person · 272 points · first shared 2020 · 72 comments on HN
    4. 4
      The Road to Superintelligence (2015)
      90 people · 236 points · first shared 2015 · 60 comments on HN
    5. 5
      A Sick Giant
      5 people · 220 points · first shared 2020 · 128 comments on HN
    6. 6
      Neuralink and the Brain's Magical Future
      57 people · 190 points · first shared 2017 · 25 comments on HN
    7. 7
      Everything You Should Know About Sound (2016)
      4 people · 174 points · first shared 2016 · 39 comments on HN
    8. 8
      It's Going to Be Okay
      1 person · 138 points · first shared 2016 · 86 comments on HN
    9. 9
      Why Cryonics Makes Sense (2016)
      25 people · 136 points · first shared 2016 · 44 comments on HN
    10. 10
      All my thoughts after 40 hours in the Vision Pro
      1 person · 135 points · first shared 2024 · 135 comments on HN

    What HN people wrote when they linked it

    • ipnonNov 2022

      “Neuralink and the Brain’s Magical Future” by Tim Urban convinced me that neural laces and their development is feasible, probable and imminently worthwhile. It made it clear that visionaries like Musk seem like total lunatics unless you break problems down into their absolute atomic principles. His drawings are also really funny. He blows the brain up to the size of Madison Square Garden and shows that at this scale each cubic meter has 40,000 neurons in it, a complex system in itself that becomes near incomprehensible once you factor in the rest of the blown up cortex that would take half an hour to walk around. You get a sense for the immense difficulty and yet deterministic physics of the problem.

      https://waitbutwhy.com/2017/04/neuralink.html

    • toomuchtodoFeb 2024

      You do the work for the money, but you don't invest yourself in the work: you care about the people who love you back at home. In the end, the work (caveat edge cases) will be meaningless. You're converting time into fiat you need to pay for life. You can always make more money, time is non renewable.

      "Today is your last day." "Meh, whatevs, going home to my family."

      https://waitbutwhy.com/2014/05/life-weeks.html

      https://waitbutwhy.com/2013/08/putting-time-in-perspective.html

      https://en.wikipedia.org/wiki/The_Top_Five_Regrets_of_the_Dying

      (20+ years in tech, have been laid off twice, fired once, aware none of it really matters, we're all dead eventually, a blip in the cosmic timeline)

    • grishkaJul 2023

      > This notion of freezing ourselves into the future is pretty science-fiction, and it’s naive

      Being actually really dead, with your body physically no longer existing, is truly final. You won't be conscious ever again. No exceptions. This, on the other hand, gives you a chance to live again. The chance might be tiny, but it's still non-zero, so it's still worth pursuing.

      Tim Urban has a cool article about it: https://waitbutwhy.com/2016/03/cryonics.html, I agree with most of his points, except "No one ever will ever ever want to live forever". Because everyone actually does want to live forever, they're just afraid to openly acknowledge it.

    • somenameformeDec 2025

      It reminds me of WaitButWhy. [1] The guy had some awesome and insightful writings that eventually culminated in a story about SpaceX and Elon Musk that went way beyond viral. Everything after that went sharply downhill and I think the main reason is that the newfound minor celebrity status really impaired his ability to just sit down and casually shit post without worrying so much about what everybody else would think.

      It's quite ironic given this. [2] He simply needs to go mammoth hunting.

      [1] - https://waitbutwhy.com/

      [2] - https://waitbutwhy.com/2014/06/taming-mammoth-let-peoples-opinions-run-life.html

    • klik99Aug 2025

      Does anybody remember when Elon Musk said he created Neuralink because he was scared of AI and thought brain interfaces was the only way to mitigate that? (Amazing article on brain interfaces here: https://waitbutwhy.com/2017/04/neuralink.html)

      He’s always been a bit crazy but there was a time when he seemed genuinely thoughtful and concerned about the future. Now he’s constantly trying to bait people and intentionally create division for the sake of PR. Maybe he’s bought into accelerationism, but whatever it is is a far cry from his “we should tread carefully” approach

    • cadamsdotcomAug 2025

      Wait But Why says it best: AI is in the "ha ha look at the funny robot that can do monkey tricks" phase.

      https://waitbutwhy.com/2015/01/artificial-intelligence-revolution-1.html (it's towards the end of the article)

      Take a longer view. Google's AI slip ups are temporary and necessary when getting the product out, to be improved in the open. Tech companies did awkward stuff in the 90s and we loved it! It's cool that fail-in-the-open culture is back in!

      Besides, the real search results are still shown. They are right there, below the AI slop.

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