I believe Lost of all shows would be open to interpretation and thought. It was stated many times (by I believe even the writers) that every question leads to another question. Throughout the series (right up til the end) many things never had definitive answers. And even when answers were given they were often misdirections to both viewers and character. So what was Christian supposed to say, "Jack everything that happened which helped resolve your life and helped resolve the lives of those you love happened in your minds?" Think Jack would have quietly moved on with that? Why is it that thoughout the series the motivation of Dharma, Jacob, the Others, the Island, Richard was always filled with misdirection and suddenly because it was the ending we are supposed to take everything said literally. Lost was fantasy and we are trying to tie it together with a nice little bow as a finished package when the writers obviously left much of the rest of it up to interpretation. Funny I thought the Polar Bears arrived because of the island moving during last season. Was it ever said Dharma brought them or this is another thing we figured out for ourselves?