This show definitely keeps improving IMO. I really liked getting to learn more about Maggie, and after this episode I am disappointed to see her go. Overall I thought this was a really good episode. I'm very curious to see what exactly is going on with Charlie's mother.
As for the stuff you guys are debating. I honestly never really thought about any of that, and to be honest I don't really care about it. All I care about at this point is that I like Charlie, Aaron,Miles, Nora, and Capt. Neville and I am curious to see where their stories are going. At this point, they could just never explain the blackout and I really wouldn't care. The blackout was pretty much just an excuse to put these characters in the situation they are in, and I find that situation interesting. They could say that magic fairies came and sucked all of the electricity up their asses and I would just shrug my shoulders and go back to watching the current story play out.