In a recent interview, Lost masterminds, Damon Lindelof and Carlton Cuse explained the reasoning behind the three deaths on Tuesday’s episode of Lost.
Lindelof said that that the point of killing the Korean couple was to emphasize the point that Fake Locke is bad. “At least they got to die in each other’s arms, so they’d have some sense of victory,” he said.
And Sayid?
“Sayid’s entire season-long arc has basically been, if you tell him that he is evil, you can convince him he is evil. But if you tell him he is good, maybe you can convince him he is good. We basically decided that in a moment of pure instinct, if he did something, if he sacrificed his own life in favor of saving the other people’s lives, that would convey to the audience, ‘This guy was actually a good guy.'”
Credit: EW.com



