i make up theories like that often or at least i used to while i was in class's at school
but i'm not in school anymore
and i have less time to think about taht stuff unfortunatly. i used to put alot of thinking into gravity like artaficial gravity
.
isn't the theory go that 2 gravity sources of the same strength cancle each other out ?
anywayz also i'm a bit of a star trek fan
i also put alot of thought into the "replicator" ideas.
but i think your ideas would be more closer to the mark then mine.