Your wife's a very smart lady…
"-My wife—who's reading a book about time travel right now—pointed out that the generation of alternate timelines makes logical sense, because there has to be an existing version of these people who set off Jughead. Otherwise, the paradox is irresolvable."

One of the best episodes yet.
This was probably one of the top 5 episodes of LOST for me. So many revelations and so many intriguing new questions. A successful season premiere should dig its hooks in so deep there's no way you could leave, and this definitely accomplished that!