Some kind of transport system involving vacuum tubes. You know those little tubes used to send written messages? It would be so cool to have a human in one! Very speedy because there’s no friction in a vacuum.
The wheel! Where would human kind be without it?! Not only is it used for transport, but also for moving water, the water wheel and used in agriculture to grind crops. I think it’s a pretty fundamental invention.
Technology wise, either the internet or the mobile phone!
Sadly, I don’t think I’ll ever invent anything quite that cool, I’ll keep trying!
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