Dungeons and Dankness Part 3.5: Content with World Around Me

The more I think about the Hollow World, the less it makes any sense, which I guess is why it's discredited.  How does the day and night cycle work if the the sun is at the center?  Wouldn't it also mean that the inner shell is a completely uninhabitable desert?  How does gravity work if there are two centers of gravity?  Questions that make that make a plausible world impossible.  My best explanation is that some cosmic entity (a god if you will) put a minature sun at the center of the earth for reason, and is maintaining some kind of day/night cycle/gravity so that life can exist there.

I also organized the Content Bible, which gives an outline for creating a realistic world and a guide for creating a basic story outline.