yeah the whole thing with Claire wandering off by herself into the jungle and then later hanging out with Christian in Jacob's cabin is just weird and I think different from any thing else we have seen on the show.

Even her appearance to Kate in Aaron's bedroom was different.
Kate was dreaming right?
It is not like when
Walt appears to Shannon in the jungle
or
Christian and Libby appearing to Michael at different times on the freighter.
or even
the several times that Eko saw Yemi

If she is dead then I think this is the first time that several characters have seen a dead character all at once.
I am talking about her being with Locke, Hurley, Sawyer, and the rest from the time she was in the blown up otherville house until she wandered off in the jungle.

anyways.... the whole Claire thing since the attack on otherville is just weird.

There are a couple of things that make me think Claire is dead, but there are also some thing that are just so different from how we have seen other known dead characters interact with live characters. so... yeah weird

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Doctor playing golf. Woo, boy howdy, now I've heard everything. What's next, cop eating a donut?