Here's a weird thought, and completely against the Lost canon that they aren't dead. But...Clair was in a house that got blown up, Christian drank himself to death, and in the preview after this episode it showed the guy that said "I've been dead for 12 years". What if Clair died in that explosion and that's why Christian came and got her? I know, that's not it, but why else would she leave her baby? The whole thing with Miles being able to talk to dead people proves that on LOST, just because you're dead doesn't mean you're gone. I'm starting to think that Smokey and the dead people are NOT one in the same.