Quote Originally Posted by Kam
i'm curious if Smokey can "hide" within Locke, because Miles didn't seem to be able to penetrate the disguise or know that the real Locke was dead.

Which means....

Were all the apparitions of the past really just Smokey? Walt included?
Ooooh! You bring up an interesting point. Miles and dead Locke haven't been together yet. Maybe Locke will speak to Miles at some point. I mean, there has to be some bigger reason for Miles to be on the island than what we've seen so far.

In addition, I think that there has be certain things in place for Miles to speak to dead people. I recall two occasions where he told people, "it doesn't work like that". The first was when he was asked by a dead kid's father whether his kid knew that the the father loved him. The kid had been cremated and his ashes scattered. He told the Dad that "it didn't work that way" and Miles couldn't talk to him (although he pretended to). And then when Sawyer asked Miles what Juliet wanted to tell him, Miles responded the same way (only this time it worked (pardon the pun )).

So if the deceased doesn't want to speak to Miles, then maybe Miles can't hear them.