So Jack has the "upper hand" for about an hour before he has to either save Ben or let him die. After that, something's got to give one way or the other. The writers could sure do a lot with that hour if they choose to, and while I enjoyed "I Do", there wasn't much light shed on the bigger picture. I would think that Jack wants to know what exactly it is that these people are doing. I sure hope that he plays the "Tell me what's going on or Ben dies" card. Why all charades? Keeping them in cages and cells, etc. If Ben wanted Jack to operate on him, why go through this prolonged process of trying to "break" him? Why not send a party over after the plane crash to help and befriend these people? There's obviously a lot of history here that we don't know and I'm sure the others have reasons for doing it this way, but what are those reasons? There are a lot of good guesses out there, but to quote Hurley in "Numbers", "I want some friggin' answers!"