this post was submitted on 17 May 2025
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Medieval construction crane (infosec.pub)
submitted 8 months ago by PugJesus@lemmy.world to c/historyillustrations@lemmy.world
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[–] PugJesus@lemmy.world 13 points 8 months ago

The dangling donut was actually an innovation of the Dutch (who invented the donut); before that, hamster wheels had to make do with only 12% the efficiency of later hamster wheels.