Continuity mistake: Ana-Lucia says that she never saw Nathan during the two hours the plane was in the air, which Cindy the flight-attendant agrees with, saying that she has a photographic memory for passengers. But the plane was actually in the air for eight hours before the crash, as revealed in the pilot, so, not only should Cindy remember him after that long, but they all should be able to tell the difference between two and eight hours.
Audio problem: When Sayid and Essam sit in the truck with explosives, Sayid says, "Her name is Nadia, they know where I can find her," and in the shot facing Essam, when he is done with that line Sayid's mouth continues to move, but nothing is heard. (00:06:35)Super Grover
Continuity mistake: When Boone is tied up, with the goo in his hair, Locke has only his backpack slung over his left shoulder, when he holds the sheath in his left hand as he raises his right arm to throw the knife. After a brief cut to shocked Boone, Locke is in mid-throw and suddenly his second bag is slung diagonally across his chest and shoulder. (00:14:55)Super Grover
Continuity mistake: As Kate and Jack head back to the beach, while Jack explains why they should move to the caves, when Kate lifts the bag and slings it round her shoulder, opposite sides of the bag face out between the first and second shots. Then, in the third shot it hangs from her shoulder very differently.Super Grover
Continuity mistake: In the scene where Michael and Sawyer are eating some fish on the beach (with Jin working on the raft) a pregnant Claire has a quick conversation with them and heads into the forest. About 20 seconds later Kate runs into Michael and Sawyer, and runs into the forest at full speed. Kate later finds Claire in labour, who somehow had gotten further out than Kate, even though Kate was running at high speed in the woods. There is no way a pregnant girl could have beat Kate to that position, even considering how long it took Jin to find them from the beach.
Continuity mistake: When Michael thinks Jin has set fire to his raft, he punches him in the face a couple of times. When Jin is leaving Sun later on, his face is miraculously unmarked. There is no sign of any swelling or bruising. He doesn't look like a guy who's just been punched in the face.
Continuity mistake: Towards the end of the episode, when Locke is preparing to shoot Ben, Ben starts talking about Charlotte and her team. Locke is then holding his gun in his right hand, and holding Ben with his left. As Ben is saying "Because I know what they're doing here", there is an angle change, and Locke is suddenly holding his gun with both hands.Twotall
Continuity mistake: When Jack wakes from his close encounter with Kate's sleeping pills, in the close-up his white pillow lies on the blue seat cushion, but in the next shot it lies on the grey blanket, which is spread over the cushions. (00:32:45)Super Grover