this post was submitted on 04 Oct 2025
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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.

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[โ€“] Olap@lemmy.world 16 points 17 hours ago (1 children)

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

[โ€“] CanadaPlus@lemmy.sdf.org 3 points 9 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.