Until it didn't. The eight models the Final Five helped the robots design were as close to human as they could get them, which always causes issues. The firstborn, John Cavil, was the favorite. He glimpsed the possibilities that had been denied him in his design, and that jealousy grew into a seed of rage, and that seed blossomed into horrors. First, jealous of the seventh son, Daniel -- named for a red-headed forefather of the Centurions themselves -- he wiped out every body and copy. Jealous of the stars and hating his own body, he gathered his Five parents together, and killed them, and when they downloaded into new bodies, he made them sleeper agents. Not like Boomer, not set to destroy, but simply to watch, from behind their bodies' eyes, as he took their lives apart. He rewrote the programming of his six brothers and sisters so that they would forget where they came from, and went behind the curtains of his own life, pretending to know no more than the others. He even rewrote himself, so that he'd never sleep or dream again.
Jacob is not a Wiki and I'm wrong as often as I'm right but this is fun. Let's follow it, so there's less to explainytell later. I've already written and rewritten this recap about sixty times, which is why it's late, but it turns out the first instinct was the best, like a fractal, telling it sequentially over and over until it's done. If you're a plotasaurus this is all you care about anyway, and have you heard about this show Lost because I think you might like it. So the first of John's parents to come back into the game was Saul Tigh, a drunk in a wig who fell in love with the first man who ever showed him kindness. Then came Ellen, the gazelle, the artist, in a body made for destruction. Galen Tyrol and Tory Foster, and Sam Anders, came next: the son of priests and oracles, with a gift for machines; the repressed pollster who cried in bed; the revolutionary jock.
Not sure, but I think then Brother John put his sister Sharon into a person they called Boomer to watch Adama, and sister D'Anna to tie up loose ends like Hera, and sisters Six (Sarah? Natasi?) into Caprica Six and Gina Inviere to facilitate the plan. Which was then carried out, resulting in the miniseries. So then, I think when Ellen got caught on Picon, he used other sleepers to get her onto Galactica. Obviously at that point the people to watch -- being the three leaders of mankind not stuck in the Colonies -- were Roslin, Adama and Cain. He couldn't have foreseen Adama's relationship with Tigh, which has always been a pivot point for the entire show, and will now save us all; he couldn't have seen the action of angels on Laura Roslin; he wouldn't have cared what happened to Gina. But that's what I think the Plan was. I guess we'll see a whole movie about it.