9 comments

  • delichon 1 hour ago
    I had one of the best sleeps of my life on a bed of soft sand, in the curve of a dry creek that I really should not have slept in due to flash flood risk. Since then I've wondered if ancient people might have made mattresses of sand, but they were so simple and evanescent that they left no trace.
  • Aardwolf 12 minutes ago
    Rope is one thing that I wonder how to make from scratch if you'd be dropped somewhere in nature. I know it's about weaving plant fibers, but, how can it get so long?
    • MSFT_Edging 8 minutes ago
      Same way you weave together yarn. The individual fibers bind together with weaving and friction and form a longer chain.
    • WalterBright 10 minutes ago
      I've wondered the same thing. The fibers aren't that long.
  • jakzurr 3 minutes ago
    The rope-making video clip is very cool. Sounds plausible.
  • rich_sasha 16 minutes ago
    It would be in fact quite amusing if the technology the Neolithians were actually most proud of had nothing to do with stone, just didn’t last. Better fabrics? Waterproof clothing? Elaborate wooden tools made using “dumb” stone ones?
  • alexpotato 43 minutes ago
    There is a great quote:

    "The Egyptians built using stone but wrote day to day on papyrus.

    The Sumerians built with mud and wrote on clay tablets.

    This is why we have lots of Egyptians buildings but not much of their writing and the opposite with the Sumerians."

  • MengerSponge 13 minutes ago
    If you've never watched Clickspring's Youtube videos you're in for a treat.

    He has a long-running series where he works to make a new Antikythera mechanism using ancient (bronze age) technologies. He's a master machinist, so he has fabulous insight into workholding, precision, etc. https://www.youtube.com/show/VLPLZioPDnFPNsHnyxfygxA0to4RXv4...

    His skeleton clock build is one of my favorite pieces of internet content ever, up there with Bartoz's gorgeous webpages: https://ciechanow.ski/cameras-and-lenses/

    • incomplete 4 minutes ago
      omg, thank you SO much for the rec on clickspring's antikythera mechanism! i watched the first two episodes years ago and the algorithm never brought the channel back to my feed. now i'm subscribed and will have to watch this again.

      i was also lucky enough to visit athens years ago and see the mechanism in person at the national archaeological museum... it's an amazing exhibit, and if you're ever in that neck of the woods i cannot recommend it any more. :)

  • ajoski9 25 minutes ago
    Let me guess, it's the boring stuff.
  • AmenBreak 25 minutes ago
    [dead]
  • lostNFound 40 minutes ago
    Of important note, they don't mean the NYC AI company https://en.wikipedia.org/wiki/Invisible_Technologies.