Continuity: 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.

Continuity: The way Sun is holding the puppy change between the shots.

Revealing: When Jack and Kate run from the bees, they enter the cave, and when they remove their tee shirts Jack's back and sides are perfectly visible. There is not even the slightest hint of any kind of scar, on the left side of Jack's back, from the nasty cut that Kate recently sewed up with the black thread.

Deliberate "mistake": After Jack brings some survivors back to the cave, there is a shot of Hurley turning on his CD player to listen to Willie Nelson. In the next shot of Jack, as he fills bottles with water, his large tattoo is on his right upper arm, but normally it is on his left. The shot is flipped.

Continuity: When Jin comes home, he heads straight for the bathroom and washes blood off his hands. Blood stains on his white shirt change between shots, including one rather large blood stain on his right sleeve which disappears.

Visible crew/equipment: In the scene where Kate asks Jack if she is checking her out after he walks past her, in the top left corner you can see a black boom microphone appear in the shot for a second. (Not visible on DVD.)

Deliberate "mistake": Sun's left earlobe has a cleft, but while Jin is still cuffed to the wreckage, Sun watches Michael head off through the trees (to cut firewood) and in this close-up it is Sun's right earlobe with the cleft. The shot is flipped.

Continuity: When Jack is packing water bottles in to the sack and Locke says "I think one of us should stay and help Charlie salvage the wreckage", you see Jack putting a bottle in to the sack. His hands are now empty, but when it cuts he suddenly has a new bottle in his hand which he puts in to the sack.

Visible crew/equipment: When Charlie and his brother are arguing backstage, as his brother rushes out shouting "P*ss off," you can see a crew member move in the mirror on the left and the right side. If you watch closely you can see the producers tried blurring the mirrors, but still they weren't able to remove the crew member.

Continuity: When Charlie speaks to Liam outside the church, Charlie's long scarf has a mind of its own, while round his neck, as it goes from behind his shoulder to in front, and so on.

Continuity: When Charlie visits Liam at his home, the pitcher, glasses, etc, on the table change positions between shots.

Deliberate "mistake": In the episode where Shannon is having asthma attacks, Michael get some eucalyptus plants for Sun, but the plants he gives her aren't eucalyptus.

Revealing: After Sayid stabs Sawyer, in the wideshot when Jack pushes Sayid away, as Sawyer lies with his right arm outstretched the knife is nowhere to be seen. In the next close-up, the large, long-handled knife is protruding from Sawyer's upper arm at about a 90º angle. Given the angle and position of the knife, it should have been seen in the previous shot.

Continuity: When Sayid stabs Sawyer, in the close-up there are considerable blood stains on Sayid's white shirt, yet when Jack pushes Sayid off Sawyer all the blood has vanished. This continues to happen in all the following shots, when Jack tells Sayid to get his bag, and the amount and pattern of blood also significantly changes.

Continuity: While Sawyer is tied to a tree in the "jungle of mystery," Sayid throws water on Sawyer's face to wake him. The amount and pattern of water stain on Sawyer's tee shirt differs significantly in the following shots.

Continuity: When Claire is writing in her diary, in the close-up the large decorative bookmark hangs down from the book, yet in the next shot, as Charlie walks over, the bookmark is on the other side and under her fingers.

Continuity: After Sawyer admits to Kate that he doesn't have the inhalers, Sayid and he get into a tussle. In the first shot, the back of Sayid's white shirt is fairly clean as he is standing, but in the next wider shot the back is completely filthy - before he and Sawyer ever even hit the ground.

Continuity: Just after Sayid has woken Sawyer up by throwing water in his face, there is a shot of Sayid from behind the tree Sawyer is tied to, and you can see a bit of Sawyer's hair. However, it is hardly wet, if at all, and when the camera cuts back to Sawyer his hair is drenched again.

Continuity: At the start of the episode, Sawyer tells Jess he has $140,000. Later, when Sawyer is talking to his boss in the bar while playing pool, his boss says that he had $160,000.

Continuity: When Sawyer is in bed with his girl, he puts his finger on her chin and says "What do you want right now?". When it cuts his hand is gone.