If there was already an entry about this, please direct me to it. Otherwise, I'll ask it here:
Would Miles be able to detect a Nemesis transformation like Flocke? Since the body of Locke is on the Island, would Miles "get a sense" from Locke's spirit and thus know that the person walking around is a fake?
As a follow up, say in the first episode of Season 6, the Dharma Losties return to the present. How long after they meet Flocke do you think they will be fooled? Will Richard and Ilana immediately fill them in on the situation, or will Jack and the rest meet Flocke first and spend a lot of the season following his plans unintentionally? If Miles can detect the fake, he would prevent this scenario from happening.