But within the logic of the LOST universe, I don't buy it either. Why? One reason is that all of Faraday's efforts to change the past failed. The Lostaways may well attempt to go through with his plan or some variant thereof, but I think they will end up in the same place--in fact, I think they will likely do something that will only make things worse when they inevitably return to the present, and help set up one of the major conflicts of Season 6.
Perhaps Widmore's actions towards Desmond can be explained in the same way that Eloise's towards her own son can: necessary steps to take in order to ensure that what is supposed to happen happens. And Daniel's journal may provide them with the requisite information to orchestrate those schemes.
Suppose that somehow the past has not just been changed, it has been erased. And thus the Lostaways are needed to go back in time and undertake actions to recreate a different past that nonetheless will produce similar outcomes. Under this half-baked theory, something always happened in 1977 to cause Ben to be taken to the Temple, but it wasn't Sayid shooting him. The lives of people have been manipulated in such a manner so that they will engage in actions similar to those that occurred in the now-erased past.
Inane? Of course. But I liked the "Hey Jealousy" tie-in so much that I had to come up with something.
1x22 "Born to Run"--the worst penultimate ever, IMO, it did very little to set up the finale, other than to finalize who would go on the raft as Kate's attempt to pin Michael's poisoning on Sawyer rather than herself and Sun backfired. Quite frankly, this was one of the weaker episodes of Season 1, despite the fact that I like Kate.
2x22 "Three Minutes"--we see Michael's time with the Others, which was really the first upclose look we ever got at the Others (although it was their B team of Tom, Klugh, and Pickett that got the most screen time, and they were conning Michael with the hillbilly survivalist act). This episode was very strong, and sets up the finale with the finalization of the attack plan, Hurley's decision to tagalong, Sayid's conclusion that Michael was betraying the group, and the arrival of Desmond and the Elizabeth at the end (it's still a shame no one ever told Libby that there was a Scottish guy named Desmond in the Hatch).
3x21 "Greatest Hits"--the best and last Charlie episode was a perfect setup for the finale, with Jack unveiling his "blow 'em all to hell" plan, Karl arriving to warn of the imminent Others attack, Charlie and Desmond setting out for the Looking Glass, and of course Charlie arriving at the Looking Glass to be promptly held at gunpoint by Greta and Bonnie.
4x11 "Cabin Fever"--more in the vein of "Three Minutes" than "Greatest Hits", this episode puts in place the essential action of the finale without doing as much to commence it. Most of the time is spent with Locke, Ben, and Hurley, with Richard Alpert's (and Widmore, too?) contact with Locke throughout his life (prompted by the events of "Jughead") making for an awesome flashback. Christian tells Locke to move the Island, and Frank tosses out the phone to track the helicopter.
What can we conclude from this? With the exception of "Born to Run", all of these episodes are quite strong, which is good news. In what could be considered a surprise, what with the plot threads coming to a head on the Island, the flashbacks (again, "Born to Run" excluded) were excellent. I learned a bit more detail about this week's episode than I had wanted to, but I'd say it sounds like the trends will hold.