I will say, this was a good episode for Juliet... after the inane "I changed my mind" line.
But I still found it FRUSTRATING - even though they spent so much of the episode showing Jacob, all we learned was that he interacted with them in the past.
We still don't know who he really is, or why or how he ... is what/who he is...!?! Grrr.
At this point, I'd be satisfied and amused if they all end up boarding the plane as strangers and landing in LA. But I'm pretty sure that won't happen.