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.
    • mr_toad 16 minutes ago
      Sand is a pretty good heat conductor. It’d probably be ok on hot nights, but not so much in winter.
    • bell-cot 11 minutes ago
      Possibly - but if they transported the sand to where they slept very often, that would show up in archeological digs.
  • Aardwolf 31 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 27 minutes ago
      Same way you weave together yarn. The individual fibers bind together with weaving and friction and form a longer chain.
    • WalterBright 29 minutes ago
      I've wondered the same thing. The fibers aren't that long.
  • alexpotato 1 hour 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."

  • rich_sasha 35 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?
  • jakzurr 22 minutes ago
    The rope-making video clip is very cool. Sounds plausible.
  • MengerSponge 32 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 23 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 44 minutes ago
    Let me guess, it's the boring stuff.
  • AmenBreak 44 minutes ago
    [dead]
  • lostNFound 59 minutes ago
    Of important note, they don't mean the NYC AI company https://en.wikipedia.org/wiki/Invisible_Technologies.