WIKIPEDIA:
This means that anything which entered the accelerated wormhole mouth would exit the stationary one at a point in time prior to its entry.

CPPAH:
Prior? So wormholes can only be used to travel back in time, but not forward? I thought wormholes were a two-way street. Richard Feynman explains wormholes, in his book, Six Easy Pieces, with a drawing of a piece of string pulled taut, and an ant standing on the string at one end. He brings the two ends together, with a fold or a loop of time below and out of the way, and suddenly the ant can walk from a to b in a fraction of the time it would have taken him before.

How does the Wikipedia idea that time travel is a one-way street jibe with guesses people here have made that Ben can only go forward in time, and not backward? More importantly, why would anyone try to time travel at all, if "the universe has a way of course correcting," as Mrs. Hawking noted to Des?

I know, I know! I think time travel is going on in Lost, too, I just don't get why some people seem to be able to do it without consequences (Ben) and some can't (Des). Could it be that not making changes to the future/past is one of the "rules" that Ben and Widmore have agreed to, but Widmore breaks the rules while Ben keeps to the rules?


WIKIPEDIA:
if clocks at both mouths both showed the date as 2000 before one mouth was accelerated,

CPPAH:
So one side is not _always_ accelerated? That means sometimes time travel is possible between the two points and sometimes it's not. Is a magnetic force what kicks it into acceleration?


WIKIPEDIA:
and after being taken on a trip at relativistic velocities the accelerated mouth was brought back to the same region

CPPAH:
"Region" in space rather than in time, right?


WIKIPEDIA:
as the stationary mouth with the accelerated mouth's clock reading 2005 while the stationary mouth's clock read 2010, then a traveler who entered the accelerated mouth at this moment would exit the stationary mouth when its clock also read 2005, in the same region but now five years in the past.

CPPAH:
So how come in Daniel's experiment with the payload on the island, the two clocks show different times, rather than the same time?


FROM QUEENBEESTEPH:
"...if you were to drill through the earth from around Fiji (the last location we heard about 815), you would come up roughly around Tunisia. It is possible that some of the diagrams in Daniel's notebook detailed this.

CPPAH:
How do you know for sure which plane, which slice through the earth from one point to another is the important one? I mean, you could start at Tunisia, going through the earth, and end up in a variety of places on the globe. Why is Fiji more important than any other? I mean, I could see that Fiji would be significant if the earth were a perfect sphere, then a Tunisia-to-Fiji slice might make a perfect diameter (I haven't looked on a map), but the earth isn't a perfect sphere. Far from it. It's an oblate spheroid, which makes things a lot less exact.