Something I wanted to throw out here for discussion. Anyone else think the sub was just a prop?
A few episodes ago when Locke blew it up, Ben made a comment that having the sub there made the non-native Others feel like they could leave. They didn't feel trapped. Basically saying it was like a security blanket - they were happy to be there as long as they think they have a way home. His wording (like I posted above, I LOVE him as a character and love to analyze how he presents info) was more about how it makes people feel, not the actual function of the sub. And like I said, Ben doesn't lie, he's just very careful with his words. I find it interesting that he is very careful not to come out and say that the sub is how they get to/from the island, only that it makes people feel like they can go to/from the island.
So, they had to knock Juliet out to take the sub to the island? Because it's such a rough entry? What about everyone else there? Why didn't they have to be knocked out? I think there's another way to/from the island that they're not giving up. The sub is a prop - people think it's how they got there, people think it's how they can leave so they don't go searching for any more answers.