Maybe the Fraud-Psychic who convinced Claire to get on the plane to Los Angeles was actually convinced to do so by Christian who wanted his daughter to meet her half brother Jack ..?

Integrated i think that is a good ponit and maybe so Claire can have someone to help her look after her baby with her and so Claire can have a family again because her mother and father are dead.

Well, we don't know for sure if her Mother is dead.

Uncle Jack has a nice ring to it. (:

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" I push this button every 108 minutes, I don't get out much."

"Theres a time for living low down, theres a time for getting high. A time for peace, a time for fire. A time to live, a time to die."

The real art of conversation is not only to say the right thing at the right time, but also to leave unsaid the wrong thing at the tempting moment.

Jack saw his dad's body in the hospital or morgue or w/e.

I'm wondering if claire will have a vision of Christian. Maybe if Jack and Claire are ever together at some point, and he shows up, they'll both be like "Dad" that would be a confusing moment for both eh?

I really wonder if Sawyer knows - from the bar - or surely ana-lucia might have known and told somebody. There has to be a way for Jack and Claire to discover they're siblings - OH NO! It's going to be that stupid Ben Linus or Juliet with their thick files on everyone that's going to tell, and probably in a mean, manipulative way.

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`Dear, dear! How queer everything is to-day! And yesterday things went on just as usual. I wonder if I've been changed in the night? Let me think: was I the same when I got up this morning? I almost think I can remember feeling a little different. But if I'm not the same, the next question is, Who in the world am I? Ah, that's the great puzzle!'

-- Alice, from “Alice’s Adventure’s in Wonderland”

yea i think that when jack is ready to leave the island one of the others tell him that claire is his sibling and then he might have a reason to stay on the island.

Oh Fate!!! That is a TERRIFIC thought! I bet that's what it's going to be. Jack's about ready to leave and the creepy Isabel, or Juliet will say, "One thing Uncle Jack..." and Jack won't leave.

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`Dear, dear! How queer everything is to-day! And yesterday things went on just as usual. I wonder if I've been changed in the night? Let me think: was I the same when I got up this morning? I almost think I can remember feeling a little different. But if I'm not the same, the next question is, Who in the world am I? Ah, that's the great puzzle!'

-- Alice, from “Alice’s Adventure’s in Wonderland”

This is getting more interesting... Someone must know that Jack and Claire are siblings. "The Others" know so much about Jack, Kate etc. so they must know that they are siblings.

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How will Jack and Claire know they are slibings?
I think that the black smoke will turn into jack's father and tell him not to leave because claire is your slibing