That’d be the Falkirk Wheel. Impressive bit of engineering – it’s balanced so well that it only takes 22 kilowatts to turn it, about the same as boiling eight kettles.
Can I just check? In the sword fighting thing…Are they monkeys or children? I only ask because it looks like children but only a society that NEEDS TO BE DESTROYED would pit children against each other with armour and swords so assuming we should continue with our world, it must be monkeys.
Any other explanation means we should all kill ourselves.