Apparently, if you weren't Caucasian, you died last night.

Sun and Jin, after a tearful reunion just last week following a two-season separation, died in a watery Titanic-like "I'll never let you go" fashion last night.

And Sayid, who was already dead but kind of like a zombie (I guess), turned back to his old heroic self long enough to do some good, and then die for realz this time. 

Apparently, if the previews are any indication, the producers are going for some black/white thing, which one could interpret as relating to moral values.  But maybe it's about skin color.  I mean, they killed off the olive-skinned Iraqi, and the "yellow" Asians, leaving the main charactors to be a bunch of whites.  Coincidence?

No, I'm kidding.

But seriously, one thing about Lost I've noticed: when a charactor goes through redemption, something bad often happens to him/her.  Like death.

I mention this because I think I've figured out "Lost".  I mean, really figured it out.  My theory is this: the plane crashed not on an island, but in a place between life and death.  I'm not talking about purgatory — that's between heaven and hell.  I'm talking about a place between life and death.

And the only way you leave the "island" is to redeem yourself against the past sins of your life, or fail to redeem yourself for your past sins.  Those are the two ways.  Once you've fallen into one of those two categories, that's when you "die".  But you don't really "die"; that's just how it appears from the island's perspective.  What really happens when you "die" on the island is that you go back to life, to live as you normally would.  But those who fail to redeem themselves soon die back in the "real world".

In other words, Sayid and Sun and Jin didn't necessarily really die. They just moved on as if the plane never crashed at all (some of which we may be seeing in the flash sideways).  I guess we'll find out whether they actually will die.

There are two gatekeepers of the "island".  We already know about them in a way.  They are black and white — and they decide the fate of everyone on the island.  They've been doing this for centuries.  One of them — the one in white, advocates for post-island life; the other — the one in black — advocates for post-island death.  It's like picking teams for a baseball game.  They work together on this, often in agreement, but they are also opponents.  Again, it's like two opposing teams in a baseball game.  You have to have two competing teams or else there's no game at all.

So what started as a friendly cooperative rivalry turned bad when the "black" island demi-god got ambitious and killed the "white" island demi-god (Jacob).  But then the "black" island demi-god realizes that he needs an opposing counterpart, so in the form of John Locke, he's trying to get a white counterpart replacement for Jacob.

In the end, my prediction is that the black demi-god will die as well, and will be replaced by Rose.  Jacob, the white demi-god (already dead), will be replaced by Rose's husband Bernard.  I believe this because Rose and Bernard are minor charactors and one of them is literally black and one of them is literally white, and neither one has shown an interest in leaving the island at all.  In fact, maybe they were "sent" as replacements, since we don't much about their past.

Oh, I forgot. Ooops.  Ahem.  Spoiler alert.