Superstructures – giant, impossible machines or buildings, popular in science fiction, more or less impossible in reality – are the absolute best. They are my jam. The Dyson Sphere is the best one.
The Kurtzgesagt—In a Nutshell runs down what a Dyson Sphere is, and how you, entrepreneurial future inventor you, would go about building one.
Well, what are you waiting for? Superstructures don’t build themselves. It just takes time, and ingenuity, and solving several intractable problems. Get to it.