Oh wow you're right why didn't the funny cartoon think of this

I don't know if you're serious or sarcastic, but I wasn't trying to correct the cartoon but meant it as a suggestion for an irl protest sign

FYI: 100% sarcastic XD

I'd wager it's a closed loop

The drones can just lift the end and the water will flow back - the slide doesn't even need power.

The water is going to be an issue. Instead of a water slide, why not a really good Teflon coated slide? Or use that stuff Clark Griswold invented.

that's really cool

Wait is the part about the "actual" measurements true???

It is actually true that the measurements used for lumber refer to the "unfinished" size and commercial boards have been milled to different dimensions. It's like how a "1/4 lb burger" refers to the pre-cooked weight and if you order one in a restaurant, it will be smaller than 1/4 pound.

(In the old days, you would buy rough-hewn boards that actually were 2x4 or whatever and then the carpenter would cut the board down to make it nice and square and smooth. Industrialization led to them selling boards that had already been finished, but they needed to be smaller for reverse compatibility)