Let me see if I get this straight...
The original 12 tribes created humanoid AI. There was some sort of conflict, and this AI left Kobol, becoming the 13th tribe. They eventually settled on Earth, where they flourish in their new society, able to reproduce like humans. Then something happened, they had their own holocaust, and were wiped out, except for 5 that foresaw the end coming. These 5 backtracked to the 12 colonies, to try and warn the humans, except they were too late. So the made a deal with the Centurions: human-form bodies and resurrection technology in exchange for peace. Problem was, the Ones, John, didn't like the idea of being human and having peace. So they tricked the 5, wiped their memories, and tossed them into the 12 colonies. The rest is history.
The whole thing is both very revealing, and extremely confusing. All in all though, I like how Moore, Eick, and the writers have pieced it all together. It feels right, and makes sense. Looking forward to getting more information though...the whole thing is still a bit hazy, with too many gaps.
Speaking of gaps, poor Galactica! She's tearing apart at the seams. I guess even ships can be imperfect, no matter how heroic they seem. I liked Tyrol's quip about the cost cutting during her construction; really brings to mind the old saw about remembering that your gun was made by the lowest bidder. And now she's gonna be part Cylon...that should be interesting.
Excitement and action wise, this episode was lacking. But it did a good job of progressing the story, and tying together some of the hanging threads we've had. So for those of us that like character and story development just as much as bang bang action scenes, I think it was a good episode.
P.S. - Here's predicting that one of the Daniels escaped, and was Kara's father.