How David created in afterlife? he is just an idea in jack's mined? How david his mother was Julait? may be jack marry her in after life? they are not leave but moving on, but How are they stick in life? are they waiting for jack? Are the people in the Hospiatl real,the surgery for jhon locke real !,the vending machine !real !, the concert real !, if they aren't ? then How that happen ,are they travel on 815 and they was dead? How? if they are real How christan told Jack How you here? because they dead ,soooooooooooo all acianice 815 are dead like jack. IF JACK SAVE THE ILSAND, HOW is it sumberged?