This is a theory I developed years ago; I just couldn't think of a good way to put it into words to share it with others until now. Some parts of it might be a bit confusing if you haven't played KH1 in a while. I tried to be as clear as I could though
The theory is pretty long and has a lot of graphics (it exceeds the amount I'm allowed to use on this site)...so you can read the full theory here. (Sorry that I have to link to an external page...)
I'd love to hear what other KH1 fanatics think!