Board Thread:General Discussion/@comment-26189598-20150411152007/@comment-26189598-20150510130650

RedCreeper10 wrote: What this theory doesn't explain is: Why Earth? I mean, based on the fact that gems are alien in the first place proves that there is probably life on other worlds, so why choose Earth?

My theory involves Doctor Who, but I won't get into it unless you want me to.

(I'm not saying this isn't a good theory, but everything has its holes.) You must have a very different definiton of a theory then. Also, there must not be other lesser life forms besides Earth's for the gems to use otherwise it would ruin the story. The thing about developing story theories is that you gotta make sure they don't undermine or ruin the plot in any way.