Lost!

[bewitched]

Originally Posted by Ghoulish Delight

If they remain consistent with previous instances of time travel, they vanished.

I meant to point out earlier that Locke is an example of this...he is dead in the real world and alive on the island. Both places at one time (well, really 3 years apart, but time isn't moving at a parallel pace). Granted, the circumstances are different but I think it is clear that TPTB's version of "time" travel allows for a person to be in more than one reality (place and/or time). That's part of what I meant earlier when I wondered whether the Others who "left" the island (and then returned) didn't actually just inhabit 2 different realities at the same time.