Unless i'm wrong, Rousseau's team reached the island in 1988, and they were almost immediately wiped out. Later on, Ben kidnapped Danielle's newborn baby, although he was ordered by Widmore to kill her. However, when the Purge takes place, in 1992, we clearly see that Ben is still working for the Dharma Initiative. So I keep wondering: was he a Dharma member and one of the Hostiles simultaneously between 1988 and 1992? Or is it all a continuity error?