I really liked last week's episode, but this one was absolutely sublime. I was getting chills all the way through. This felt like one of the best episodes of Season 2 — it was totally in that mode again.
SPOILERS
The depth of Nora and Kevin's dysfunction is actually clear throughout the episode. I'm scrolling back to random scenes, and you can see it on their faces the whole time.
Their fight in the hotel room strongly reminded me of Jack and Kate's fight in Lost 410: "Something Nice Back Home." It takes place in the flash-forward. Jack, drunk and losing his temper, delivers a similar gut-punch line that is so intimately hurtful that it ends the fight. It's also about motherhood.
(This episode also feels quite Losty because everyone has a mission.)
Just so we're clear: Self-immolating guy in the last episode answered no and got rejected. Nora answered yes and got rejected. Theories abound...
My guess is that the test is simply rigged. (Occam's Razor, right?) But if it's legit, maybe it's all about your reasoning, not the answer itself. Nora's reasoning lacked compassion: "what's one more?"