Continuity mistake: When Sawyer helps push the minivan, there are small holes on his tee shirt's collar and a large hole on the seam of his left sleeve. When he walks back into camp with the beer, the large hole is now on his right sleeve, and the left is intact. Neither are flipped shots.Super Grover
Other mistake: Ethan kills one of the survivors. Sawyer thinks it's Steve but Hurley corrects him and tells him that it was actually Scott. They make a point of Scott being the deceased and Steve being the one people mix him up with. According to the actors playing Scott and Steve it was in fact Steve who got killed but the producers messed it up.
Continuity mistake: After Kate and Jack dig up the marshal's body, Kate opens his wallet. In this close-up, as the pocket for bills is at the top, the vertical slit with his ID is on the right and the horizontal slits with laminated cards are on the left. However, in the close-up when Jack holds it, as the pocket for bills is again at the top, this time the vertical slit with his ID is on the left and the horizontal slits are on the right. Surprisingly, neither are flipped shots. Two different wallets were used in each close-up, though similar in style, the storage slits are on opposite sides. (00:28:05)Super Grover
Revealing mistake: When Shannon carries and drags the luggage (some of Boone's) she breaks down and Sayid speaks to her. When he says, "It won't be too much if I carry it for you," he strokes her cheek with his left hand - note the watch. After he says, "I have a hike to lead," in the next wideshot he's still holding her face with his "left" hand. But, note the lack of watch, and her large suitcase is now backwards. They flipped the shot so his right hand would appear to be his left, to keep hand continuity, but it doesn't work. (00:17:10)Super Grover
Continuity mistake: After telling Danielle what is written on the back of Nadia's photo, Sayid steps closer to Danielle. When Sayid says, "The only way off this place..." in the shot facing him Danielle holds the gun up high and points it straight at Sayid's chest. Yet, in both the previous and following shots facing Danielle, the gun is pointing down towards Sayid's legs. She then lowers the gun and sits down.
Continuity mistake: When Marshal Mars pulls behind Ray's pickup, as the third vehicle beeps, the camera pans to the back of the cab. The cab window, behind Kate and Ray, is slid open to allow a clear view of the marshal pulling behind. In previous and following shots, the windows behind them are closed. (00:30:15)Super Grover
Factual error: The version of Brixton underground station is very lazily reproduced: the 'U' and 'D' of the 'UNDERGROUND' roundel have been the same size as the rest of the word since before Brixton station was built; the white circle is not part of the roundel; the station appears to be accessed through a plate-glass window; there is no reason for a black cab to be parked at the side of the road; also, the cars are all parked along the right-hand side of the road, which they would never be in the UK.
Continuity mistake: When Tom removes the toy airplane from the lunchbox, the three propeller pieces are completely broken off of the left wing engine (all are intact on its right wing). Yet, earlier on the island, when Kate twirls the airplane in the air, before Charlie joins her, the left wing engine has grown one piece of propeller that is unbroken. There are other moments such as this, in other episodes. (00:02:40 - 00:23:50)Super Grover
Continuity mistake: When Jin is packing to leave the cave, his backpack is wide open and unzipped when he swings it onto his right shoulder and then carries the fishing net. After a brief cut to Sun shouting in English, Jin is walking away carrying the net, and the backpack is still on his shoulder, only now it is zipped closed. (00:32:15)Super Grover