This episode is well done. As in well done steak, a bit overcooked. I am not going to pretend I understand everything 100%. Maybe that is what the writer wants us to feel. Feel as confused as the actual characters. Even after they (and we) learn that there are at least 2 alternate universes, this episode was hard to follow. They even color coded the kids for us with their outfits and different hats. I liked the Schrödinger touch. Although I was surprised that a cat would stay alive with nobody around to feed it. As far as I know they didn't bring a cat with them. I was waiting for a scare jump with the cat for the entire episode. Too bad they don't that kind of stuff anymore. The father is a generic father in each universe. I guess this is what they mean by "men don't change" ;)
There was one point where I said "continuity director fell asleep". Because, probably intentionally, events started jumping a lot.
They kept playing the mommy/mama card a bit longer. I kept thinking of family guy episode.
"Mommy, mama, mommy, mama, mommy, ma, mama. What? Hi!"
In short lots of tension, drama. Maybe universes will collapse or something in the last episode. In may go in any direction. Not sure why I cannot give 10. Maybe they tried too hard.
My review is like the episode itself: all over the place.
Edit: Spelling mistake and an excuse for my badly written review.