Sundance, FTL isn't necessarily folding space and if we are being picky, FTL is just that Faster than Light, nothing more. The theory behind folding is near instantaneous and velocity really doesn't come into it. So Paul might be right. I don't think so tho

Personally my take is the 13 colonies existed millions of years ago and they destroyed themselves. The survivors found Earth II and settled. They bred with native humans and Cylons and the Cylon descendants were the only ones who retained that knowledge.
The happening again thing is a reference to how f*cked up humanity is. Like the end of the Tripods Trilogy.