Muad'dib

Not if the ring curves inward at the edges, conforming to a section of a sphere.

Here’s another fun fact: A ringworld exerts zero net gravitational force on anyone inside of it. It’s one of the implications of shell theorem.

Using the wrong engine cleaning solvent is a terrible sin and he’s being punished for his hubris

Well that’s how it works in Larry Niven’s Ringworld and also Halo. They just thought the earth was a ring.

Ban it until the hard problem of consciousness is solved.