Revealing mistake: 4-3: When Sayid closes the woman's eyes in the hotel room, it is clear he doesn't touch her.
Revealing mistake: Episode 4-4 "Eggtown": When Locke is in the basement hallway, he slams Ben's breakfast tray against the wall. The wall moves like it's thin plywood. Odd since basements are either thick wood or concrete over packed earth. (00:02:30)
Answer: He was eating a peice of an orange with the skin still on.
XIII