Lost!

[Ghoulish Delight]

Originally Posted by JWBear

The O5 were not supposed to leave The Island. Ben and Locke were.

I'm still hoping they tie everything back into a semi-plausible, practical explanation, not just a hand-waving "the Island wants it" mumbo jumbo explanation. I don't expect anything to be scientifically sound or anything, but I won't be particularly satisfied if it all boils down to mysticism. As such, there needs to be a functional difference between those that time travel and those that don't, beyond "supposed to".