SPOILERS for everything up through "Ab Aeterno" follow:
OK, here's an interesting theory that I can't really claim credit for. Much of this was posted on the IMDb message board, but I've reworded it in my own words, and fleshed it out a bit with a few of my own ideas. First, here is the relevant bit of dialogue from Ab Aeterno on the wine bottle analogy:
Most viewers seem to have interpreted that to mean that the wine represents MiB. And Jacob and the Island are keeping MiB bottled up, so he can't reach the outside world, and spread evil to the world.
But Jacob never names himself in the analogy, nor does he name MiB. Instead, *the Island* is the cork. The thing it's keeping in is 'evil', 'darkness', 'hell'. What if hell is the bottle, the wine is the evil in hell, and the Island is the cork that sits atop Hell and prevents darkness from spreading across the Earth? Both Jacob and MiB are then the "defenders of the Island" in some way.
Jacob has the power to turn mortals into immortals and give them important tasks which they keep for all eternity, as we saw him grant immortality to Richard. What if MiB was just a mere mortal who Jacob granted immortality to and turned him into "Cerberus"? (Cerberus was a multi-headed dog who guarded the gates of Hades in Greek mythology. The Dharma Initiative also referred to Smokey as "Cerberus".) This would also tie into Rousseau calling Smokey a "security system"** and MiB saying that Jacob "stole his body". MiB was tasked by Jacob to take up defense of the Island, which is important because the Island is the only thing separating Hell from Earth.
MiB may have been happy to do this at first, but he eventually wanted out. He wanted to give up his job on the Island and "go home" (not clear where that is). But he can't do that while Jacob is alive, because Jacob has some kind of mental hold over him. This is presumably also why MiB can't kill Jacob directly, and why he doesn't just go around killing everyone on the Island willy-nilly. He's constrained by Jacob in some way.....he can't just do whatever he wants.
Part of why he wants to give up on his job is because he no longer thinks humanity is worth it. If humans are irredeemable, then what difference does it make if there's hell on Earth? This is why Jacob has been trying for centuries to convince MiB that he's wrong about humanity, and that's why it's worth saving. That's why he kept bringing people to the Island. He wanted to really convince MiB so that MiB would understand why it's so important for him to protect the Island.
Now Jacob's dead, and MiB is plotting to leave. This is bad not because (as most viewers seem to think) MiB himself would directly spread darkness across the world, but because his leaving would make the Island vulnerable and the Island (the "cork") is the only thing preventing Hell from erupting onto the Earth.
** In fact, go to the Lostpedia page on Cerberus:
http://lostpedia.wikia.com/wiki/Cerberus
and you find this excerpt from a scene in "Exodus":
OK, here's an interesting theory that I can't really claim credit for. Much of this was posted on the IMDb message board, but I've reworded it in my own words, and fleshed it out a bit with a few of my own ideas. First, here is the relevant bit of dialogue from Ab Aeterno on the wine bottle analogy:
Jacob: "Think of this wine as what you keep calling 'hell.' There's many other names for it too: 'malevolence'; 'evil'; 'darkness.' And here 'it' is:"
He whirls the glass bottle into swirling the wine within:
Jacob: "Swirling around in the bottle, unable to get out -- because if it did, it would spread."
He retrieves the cork and makes a show of plugging the glass bottle with it:
Jacob: "The cork 'is' this Island.
He thoroughly plugs the bottle with the cork:
Jacob: "And it's the only thing keeping the 'darkness' where it belongs."
Most viewers seem to have interpreted that to mean that the wine represents MiB. And Jacob and the Island are keeping MiB bottled up, so he can't reach the outside world, and spread evil to the world.
But Jacob never names himself in the analogy, nor does he name MiB. Instead, *the Island* is the cork. The thing it's keeping in is 'evil', 'darkness', 'hell'. What if hell is the bottle, the wine is the evil in hell, and the Island is the cork that sits atop Hell and prevents darkness from spreading across the Earth? Both Jacob and MiB are then the "defenders of the Island" in some way.
Jacob has the power to turn mortals into immortals and give them important tasks which they keep for all eternity, as we saw him grant immortality to Richard. What if MiB was just a mere mortal who Jacob granted immortality to and turned him into "Cerberus"? (Cerberus was a multi-headed dog who guarded the gates of Hades in Greek mythology. The Dharma Initiative also referred to Smokey as "Cerberus".) This would also tie into Rousseau calling Smokey a "security system"** and MiB saying that Jacob "stole his body". MiB was tasked by Jacob to take up defense of the Island, which is important because the Island is the only thing separating Hell from Earth.
MiB may have been happy to do this at first, but he eventually wanted out. He wanted to give up his job on the Island and "go home" (not clear where that is). But he can't do that while Jacob is alive, because Jacob has some kind of mental hold over him. This is presumably also why MiB can't kill Jacob directly, and why he doesn't just go around killing everyone on the Island willy-nilly. He's constrained by Jacob in some way.....he can't just do whatever he wants.
Part of why he wants to give up on his job is because he no longer thinks humanity is worth it. If humans are irredeemable, then what difference does it make if there's hell on Earth? This is why Jacob has been trying for centuries to convince MiB that he's wrong about humanity, and that's why it's worth saving. That's why he kept bringing people to the Island. He wanted to really convince MiB so that MiB would understand why it's so important for him to protect the Island.
Now Jacob's dead, and MiB is plotting to leave. This is bad not because (as most viewers seem to think) MiB himself would directly spread darkness across the world, but because his leaving would make the Island vulnerable and the Island (the "cork") is the only thing preventing Hell from erupting onto the Earth.
** In fact, go to the Lostpedia page on Cerberus:
http://lostpedia.wikia.com/wiki/Cerberus
and you find this excerpt from a scene in "Exodus":
They hid behind some large trees where Rousseau declared they were "safe". Jack asked Rousseau what had chased them and she referred to him as a "security system". Jack asked her what it did and she told him, "Its purpose is that of any security system; to protect something." Kate then asked what it protected and Rousseau replied, "the Island."