I'm swinging back toward centripetal force; my problem with artificial gravity is explaining why it doesn't work like natural gravity. Imagine a sphere, and then inside it a cylinder whose edges extend to the sphere's latitudes of 60 degrees. The residents perceive it as a flat or slightly convex surface that rises at the poles into icy "mountains". (The artificial sun isn't that warm; maybe most of the heat comes from the ground, and the sun is effectively a lamp.)
Originally Posted by trechriron
The official religious position is that digging through rock eventually reveals the impenetrable Edge of the World. I was thinking that at some point natural caves would give way to cylindrical tunnels bored into stone, and then the high-tech remains of the Builders and the outer surface. I like the idea of a transit system, and a hidden layer that keeps the ecosystem going.
"On two occasions I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question."
- Charles Babbage (1791 - 1871)