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The Balloons of Ancient Egypt
(lemmy.world)
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Because they definitely had a good supply of helium and/or hydrogen laying around to fill these balloons with, when levers and wheels were too advanced.
Right.
Clearly they used methane.
Crowds of farm labourers during flood season, all lined up just waiting for their turn to fart into the balloon.
It would be another age before they realized they could fill the balloons twice as fast using camel farts.