I’d give laser pointers to Neanderthals. Even if they did figure out some useful application for them (maybe hunting?) they’d run out of batteries eventually.

  • CanadaPlus@lemmy.sdf.org
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    15 hours ago

    One of those 3D printed non-round gear toys. They could immediately appreciate both the impressive technology that went into designing and manufacturing it, and that it has no use whatsoever. Which would be a trip.

  • tetris11@lemmy.ml
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    1 day ago

    oh I’d teach 'em modern english, and then dump a truck load of People’s Magazine’s outside their hut

    Going for a hunt today? Can’t. Need to know what Janniston said to Branjelo on page 4

  • chaosCruiser@futurology.today
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    20 hours ago

    A bottle with a highly concentrated solution of polonium, radium, plutonium or anything spicy and ionizing.

    Preferably coupled with something that glows nicely, like ZnS. Just pick a suitable fluorescent dye and make it blue or green for bonus points.

    • CanadaPlus@lemmy.sdf.org
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      18 hours ago

      I’m reminded of the real-life Brazilian scavengers that found some medical cesium, and decided to do body paint with their kids. :(

      • chaosCruiser@futurology.today
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        16 hours ago

        I can imagine the body paint story ended badly… No need to look up the facts with an introduction like that.

        Wasn’t there also a Russian RTG core that was so hot it would melt the snow around it? Some scavengers found it, and got immediately blasted with a lethal does of radiation—as you would expect.

        With this post, OP was clearly aiming for a minor annoyance or a frustrating little prank, but that story just gave me an idea that goes a fair bit beyond that… More like diabolical malice, but here goes anyway.

        Sending one of those plutonium cores back in time to the neanderthals would be a pretty good candidate too. It doesn’t really glow, which is a bummer, but it has other “magical” properties to compensate. The heat might still attract them to it, and the intense radiation would kill them within a day or two. If they somehow manage to touch the plutonium itself—a feat worthy of recognition—they could also experience its toxicity.

        • CanadaPlus@lemmy.sdf.org
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          15 hours ago

          Interesting, I hadn’t heard about that one. A little bit more caution around the mysteriously steaming machine would have been wise, even if you don’t know about radiation - they didn’t just get close, but made camp around it, and possibly wore it while working.

          The RTG in the accident was using Strontium-90; weapons-grade plutonium is actually not super lethal to handle, FYI. It’s mainly an alpha emitter, so a good pair of gloves is enough. Unless you eat it. Then you’re dead, same as Polonium.

  • ShaggySnacks@lemmy.myserv.one
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    1 day ago

    That singing fish animatronic. Convinced people it’s a god. Wait for the battery to die and the eventual religious crisis.

    • Anna@lemmy.ml
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      20 hours ago

      Hey this might help us out. If Neanderthals learn how to sit for hrs a day we would get that evolutionary advantage.

  • 6stringringer@lemmy.zip
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    1 day ago

    A snow globe from Niagra Falls, a clothes hanger, A Buttplug, a die cast Model of The General Lee, some Tide pods, an assortment of Weeble Wobble’s, The Complete Jane Fonda Workout (large print, hardback edition), A magnifying glass, A bag of Candy Corn.

    • CanadaPlus@lemmy.sdf.org
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      17 hours ago

      That one would actually make more sense if you’d never seen either part separately, but I like the spirit.

      • slazer2au@lemmy.world
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        16 hours ago

        My thought process was, this produces light only when there is light outside making it effectively useless.

        • CanadaPlus@lemmy.sdf.org
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          15 hours ago

          Exactly, although to a cave person that’s just an interesting device that redirects sunlight somehow. They’d have to understand it could have been stored up for night or used for something else, in order to feel ripped off.

  • AngryCommieKender@lemmy.world
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    20 hours ago

    Bicycles. If we could have gotten bicycles a few centuries before cars, I don’t think modern cities would be so damn car centric.

    • pmk@lemmy.sdf.org
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      19 hours ago

      If I may ask, where are you from? The city I live in is a nightmare for cars, the roads were made for horses and walking, narrow and winding cobblestone streets and the city tries its best to keep cars out of the center.

  • Olap@lemmy.world
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    1 day ago

    Something with gears. Like a cranked egg whisk. Huge amounts of science went into this, but all of it should be replicable in a few generations of experiment with even bronze working. And it should inspire inventors of the age too

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      18 hours ago

      Or wood. Mills used wooden peg gears to great effect for a long time.

      The bigger challenge is to have enough jobs worth doing with gears to keep craftsmen trained, since making a smooth turning gear by hand is a thing. If this is Rome, there will be, but they already had some knowledge of gears. If it’s cavemen there’s not a chance.

  • Salamander@mander.xyz
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    18 hours ago

    I would take a portable CD player, place a CD with Rick Astley’s Never Gonna Give You Up on it playing backwards, hook up solar panels, remove the ability to shut it on/off, and set it up a circuit that will:

    • As the device solar charges, keep it off until some voltage threshold is exceeded
    • Once the voltage is high enough, start a random timer (8 - 100 hours), so that it is not immediately obvious that the sun activated the device
    • When the timer ends, turn the music on on repeat mode
    • Sometimes turn the music off at random, and then turn it on again at random after a long delay, so that in some cases you can have turn ‘ON’ events without the device being exposed to the sun
    • When the voltage drops below a low threshold, turn the device off until it is charged again
  • CerebralHawks@lemmy.dbzer0.com
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    24 hours ago

    A Nintendo Switch running Animal Crossing. Assume it has some kind of perpetual battery, and they can figure out how to operate it/play the game, and read our modern English.

    I’m thinking they figure modern civilisation is about (or back to) fishing and farming… and that animals are intelligent. Like validating TF outta the Egyptian pantheon. You’re a human but you have a dog for a neighbor, here’s a koala, a gorilla, an eagle… and they all talk and wear clothes.

    (Of course, if we wanna blow their minds with a game AND we can assume they can play it, why not just go straight to Cyberpunk?)

        • CanadaPlus@lemmy.sdf.org
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          13 hours ago

          You actually can, although I don’t know how rugged the result is. You probably could make a heavy, one speed bike out of wood with like, wheels that are just big disks. I’m not sure if it would beat walking, especially before purpose built roads were common. That being said, they might at least think going down a hill at speed is fun, which is what the first bikes were made for.

          For a modern-style bike, the wheels are more of an engineering challenge, as is centering the various parts and ensuring a tight fit. Modern machine parts are made with micrometric precision, which involves surprisingly simple tools, but a whole lot of science and technique.

          If it was a few thousand years later after horses were introduced, they could copy the concept of tension wheels for their chariots.