I seem to remember, although I may be wrong, that the powers that be said time travel would not be used, and not it obviously is.
We could get semantical. Maybe they meant no time travel where your body goes back in time. If that's the case, they didn't lie lol. But if I try not to be a troll, I hear what you're saying. They once said the show would never have a root in science. Well there's lots of science in the show, but it's pseudo-science. So long as it sounds believable on screen they are willing to use it. So they lied there. They also said there would be no time travel, or well people claim they said it but I never saw an interview. On the contrary, I remember Hurley and Sayid listening to a radio and Hurley commenting it could be from any-time. I remember there was a big question about time and how it affected the island since early on. I remember that they used to debunk or go vague when met with questions that related to time and time-travel and they would joke a lot, obviously trying to keep it under wraps while making us insecure about what to think. But they said on two occcasions that the end-game won't be a cheap cop-out. They are not all dead, they are not all in purogatory.
I mean, if Jack and Kate are dead, how do they live together. We see Jack interact with an assistant or a co-worker or something. How could he, if he was dead? The theory holds no water.
Will be back, they said.
02. Locke's father appearing out of no where
He told Locke that he was kidnapped in the middle of the day. Dragged into a car and then the next time he woke up he was there. What more explanation do you need? The others kidnapped him. Look at Ben going to Iraq to kill people. I am waging that they kidnapped him. What Ben told Locke was a part of his attempt to discourage Locke's beliefs because Locke was "special", and the Others had been waiting for him.
03. The rest of the Others
Are at the Temple. What is the mystery? Who they are or where they are right now? The who is probably a bigger question that won't get answered yet, the where they are right now is a mystery that will obviously come back into play.
Will obviously be featured more. I thought the end of episode ten gave away lots of what episode 11 will be about. But Jacob is back in episode 11 so sit tight. However, I believe Jacob is a big piece to the mythology like the smoke monster, and won't be fully explained yet.
Will be explained by the end of the show, but not until towards the end. It's one they're sitting on for now. Probably because the reveal is supposed to go hand in hand with a certain event that can't happen before other things take place first.
06. Why people seem to heal and come back from the dead on the Island
????
Mikhail is the only one who came back from the dead so to speak, and he didn't literally. He was thought to be dead but was only wounded. As for why the island has healing abilities, that is part of the greater question of what the island is.
07. The time travel thing
Also a part of what/where the island is. What about time travel is a mystery to you? How it works, why it happens, how it happens?
08. Why pregnant women die on the Island
We know the basics. By their third trimester their uterus, when scanned by some machine, looks like that of an old women even if they are young. Towards the end of the pregnancy the body starts to treat the baby as a "foreign object" and it is "detached". The process kills the mother and the baby. Now why exactly this happens is, like with the "healing aura" of the island, a part of the question of what the island really is.
09. Why no one can find the Island
10. Where is the Island?
11. What is the Island?
These go hand in hand. If it's in another dimension, that explains the where and why, and the what, for example.
12. What was the black sand/powder around Jacob's cabin.
The circle of ash is a black magic sort of thing used to contain "something". It could be Jacob, the shack, or the power that lives within Jacob. The ash is there for some sort of confinement that we haven't been explained yet. It's part of the bigger question of who Jacob is, and what his relationship with Ben/the Others is.
13. How can Jacob's cabin move?
Same as above. I would think that the shack is there because Jacob is there. I don't think Jacob exits his shack and walks around on the island, I think the shack is like his holy church that he can make appear where he wants. Basically, I don't have a theory about this yet because what we've been given is so vague, but this is a very current "mystery", I don't get why you're scared they'll drop this.
14. What is Locke's purpose?
Maybe becomes relevant after all the O6 hoopla. In the end I don't think he has a "purpose". I believe it's more that he's a good asset because of him being "special". Remember Ben asked John about how his father pushing him out of the window made him feel, emotionally, when they were talking about the magic box. Maybe your specialness is not to do with your genes or anything, but with your psyche and the emotions you feel. Who knows, I have no theory here either. I don't think that, like with Heroes, they all need to fill in a role in some grand event in the future. Maybe there is, but Locke's purpose is another thing I don't get why you think you won't get an answer to. He's alive and around so.
15. One that will never be answered and was a good one was did Walt "make" things happen with his mind? I think they were going there with it but then Walt's growth spurt and axing on the show fucked up that plot point.
They claim they always knew Walt would grow. We can say a lot of things, but for all the things they may have lied about having planned, I would think they knew what would happen. They keep saying just believe them when they tell you that they knew Walt would grow and planned for it. They've also said that by the end of the season you're supposed to know what happened in between Michael and Walt sailing off and them being back in the world. Furthermore, they are not done with Walt on the show yet.
Between seasons 3 and 4 there were these mobisodes that were short 1-2 minute episodes from all across the timeline so far. One had Michael and Juliet talking in the tent they kept Michael in in the episode "3 minutes". In it, Juliet expresses that she's happy Michael is doing what they are asking and taking Walt of the island,
because he is special. As if his specialness coupled with being on the island was a deadly combination. In a later mobisode, there's a scene from the Hydra station where an alarm goes off. It's cause of Walt. Juliet comes to Ben and says they should give him back, Ben declines. Ben says he's just a child, Juliet says no one will take him food or go into his room. She takes Ben outside Walt's window where a bunch of dead birds are lying. They all flew into the window. Remember the episode where Walt is struggling for his mother's attention and a bird crashes into the window, making his step dad sort of eerily worried? They did this right prior to season 4, a whole season after we last heard of Walt. Sounds like they try to maintain the plotline so it doesn't die entirely. I wonder for what purpose