At the end of the episode it is revealed that Jacob was looking for a replacement and his candidates were John Locke, Hugo Reyes, James Ford, Sayid Jarrah, Jack Shephard and either Jin or Sun Kwon. Jacob also assigned the mysterious numbers to these people: 4, 8, 15, 16, 23, and 42, respectively.

Footage from "The Incident" of Jacob meeting several of the characters is shown.

Sawyer says that he is on the Island because his plane crashed, his raft blew up, and the helicopter he was on had one too many people on it. These are all events shown in"Pilot, Part 1" and "Exodus, Part 2" and "There's No Place Like Home, Part 2" and "There's No Place Like Home, Part 3".