THE FUTURE

It is a rare opportunity to see one's future and not act on it in the present.

In LOST, many of the main characters had a unique opportunity during the time flashes. When the crew was trapped in 1977 Dharmaville, they knew what their futures held for them . . . nothing really good on the island. Only one person seized the opportunity based on his future: Sawyer.

Sawyer took advantage of his future knowledge (being a prisoner of Ben's group) to leverage a position of power within the group (since he did not know whether he would ever return to his real time). He forged his position with his relationship with Juliet, which was non-existent in the real island time line. In fact, Juliet is the exact opposite of a person Sawyer would normally have gone after.

One suspects that this 30 year diversion was so strong a personal bond that Sawyer kept it in his heart until he died (and was reunited with Juliet in the sideways world). But if the characters were bouncing back and forth between time periods, both in the past and future, could Sawyer have actually known about Juliet's fate with the Incident/Jughead? "It worked," she said during the EM implosion - - - was that the final bond to her soulmate, James?

But then, it is fairly sad that Sawyer left the island and presumably lived a long life without Juliet AND a long life without another true companion. Sawyer would have been the type of man who needed company - - - both physical and mental challenges. (Which is why Kate, also a survivor, would have been his better match after leaving the island for the final time.)

It could be argued that Sayid was the one character who understood best what the flash back in time meant to changing the future. It was Sayid who met Young Ben before he turned into the monster dictator. So Sayid took it upon himself to shoot Ben in the chest, presumably killing him. By killing Ben, Sayid thought that the terrorism of the real island time would be extinguished . . .  but in all time travel lore, altering the past could have great repercussions on the future. For example, Young Ben was still naive child. But he may have found his true love in Annie or another girl, made childhood island friends, or even left the island for college and a more normal life. He may not have become the Ben who wanted to control the island.

It is more likely that Sayid's gunshot of Ben altered the course of history to actually create Evil Ben. Since the dying child was taken to the Temple by Alpert, who said he would be altered forever by the spring (as we saw in Sayid himself, an evil reincarnation). Sayid's actions in the past may have actually doomed Ben to the island maniac future, including the mass murder of the Dharma group.