Sojourn said:

Something specific they've said is that there were some moments in Season 1 that, after the show is over, will make it clear that they knew where they were going with the story (I think the Adam and Eve bodies are supposed to be one of them). I guess we won't really know until the show is over.

Again, this isn't proof. Any mystery they created in season 1 can be explained any way they see fit. That's the beauty of TV writing :)

BSG fell victim to the same thing, but the writers were open about the fact that they didn't have a set plan in mind and preferred to let show develop organically. Not everyone was happy with the conclusion, of course. I thought it was brilliantly open and agnostic myself.