Okay, here's something I have been wondering about for quite a while. Yoda and Mace keep talking about a prophecy of an individual who will bring balance to the force, like it's a good thing. Yet, from what I understand of religions that have the concept of balance, the general focus on a thoguht similar to yin/yen, which is that for every good, there needs to be an equal evil to balance out. Holding along that theory, since the sith were believed to be non-existent, and thus only good is present, why would they look forward to someone bringing balance (evil) to the force? I must be missing something here.