I thought this was an excellent episode. True, some of it was set up. The characters learned the rules of this bubble they're in. It got the pieces into place. As I mentioned upthread, the authors bent over backwards to get a generation ship into the bubble through a convoluted process--so I assume that'll become important down the road. But, I found the entire process of exploring and surviving in the bubble to be interesting and entertaining by itself. We also learned about Melba and more about the conflict between Julie and Mao. Naomi is on her way back to the Roci. The Roci saboteur was unmasked and dispatched. I like how the three Roci guys have grown together despite have different perspectives, approaches, and sometimes looking insane! And, Anna's experiences on the other ship were interesting. We saw how different people responded to the ring differently--ranging from miracle to suggesting that God was not with them in space. For some, it was just a way to make more hazard pay. It feels like a real place. Not every episode is going to have a huge reveal. They lose their punch if you do that. But, I don't think revealing what the bubble inside the ring is like is trivial matter either. I'm sensitive to purely filler episodes that just mark time in a series. This episode is not like that.