Continuity mistake: When Mr. Gold brings the town charter to Mary Margaret's apartment, he puts the binder on the table twice; once before he sits down, and then again after he sits down. (00:19:10)
The Heart is a Lonely Hunter - S1-E7
Continuity mistake: After Emma punches Regina, Regina has a wound by her mouth. For the rest of the episode, the wound keeps changing appearance and position. (00:34:40)
The Heart is a Lonely Hunter - S1-E7
Continuity mistake: When Emma is talking to Mary Margaret in the morning, as Emma says "Tell me, what do I do?", Mary Margaret's left hand jumps from the bowl of sugar to her teacup between shots. (00:09:40)
The Shepherd - S1-E6
Continuity mistake: When Mary Margaret is sitting at the bar with Doctor Whale, the straw and lemon slice in the empty drink in front of her keep changing position between shots. (00:39:40)
That Still Small Voice - S1-E5
Continuity mistake: After Regina tells Emma to clear the crowd away after Henry is rescued from the collapsed mine, Regina's hand goes from being on Henry's face to his side/waist between shots. (00:34:35)
Continuity mistake: When Henry lies on the bed, the position of his legs goes from one leg being crossed over the other, to being parallel to each other, between shots. (00:38:40)
Snow Falls - S1-E3
Continuity mistake: As the trolls search through Prince Charming's belongings, one of them is seen pulling out Snow White's wanted poster from the bag, but in the previous overhead shots, he was already holding it in his hands. (00:27:45)
The Thing You Love Most - S1-E2
Continuity mistake: When Emma is walking Henry to school, there are several instances where they walk past the same building more than once. For instance, as Henry says "Luckily, I have a plan", they pass a shop with a wooden rudder on display in the window. When he says "Don't let her see these pages", they walk past the same shop again. (00:12:40 - 00:14:00)
The Thing You Love Most - S1-E2
Continuity mistake: When Regina is talking to Sidney by the apple tree, as Sidney says "Bounced around all over", Regina is picking an apple. In the next shot, she's already holding it in her hands. (00:11:10)
Tallahassee - S2-E6
Continuity mistake: As Snow and Mulan fight, Snow's pink cardigan gets covered in straws. The amount and position of the straws keep changing during the fight, and afterwards. Also, when Snow tackles Mulan, in the first close-up of them fighting, you can see straws from previous takes on Snow's cardigan, even though she has not come into contact with the ground yet, and the cardigan was perfectly clean in the previous shots. (00:37:40)
Tallahassee - S2-E6
Continuity mistake: When Anton throws the compass to Emma, the compass changes position on the floor between shots, seen from the lines/cracks in the floor. (00:33:45)
The Doctor - S2-E5
Continuity mistake: When Emma is questioning Hook while the group is gathered around the bench, the folds in the cloth/bundle lying on the bench keep changing between shots. (00:14:30)
Continuity mistake: While Emma is talking to Mary Margaret on the phone, an extra (lady with a purple shopping bag) comes from behind Emma. The scene then switches to Mary Margaret, then back to Emma, and we see the exact same extra walking behind her again. (00:14:40)
Continuity mistake: After Charming gives Rumpelstiltskin his cloak, the cloak keeps changing position on Rumpelstiltskin's table. (00:22:05)
There's No Place Like Home - S3-E22
Revealing mistake: After Snow White hugs Red Riding Hood goodbye, there is a wide shot where Snow walks toward Charming. If you look at her face, it it not Ginnifer Goodwin, but a body double. The body double's face can also be seen in the wide shot where Snow walks away. (00:19:20)
Continuity mistake: When Mary Margaret and Henry are being teleported out of Granny's Diner by Nimue, they aren't wearing any outdoor clothing. However, when they emerge at the pond with the others, Henry is wearing a jacket, and Mary Margaret wears a coat and a scarf.
Revealing mistake: When Rumplestiltskin is screaming at Snow and Charming about their unborn child's name, he speeds up for a few seconds and looks comically fast forwarded.
Continuity mistake: As Ashley tries to break into Mr. Gold's safe, which is hidden behind a painting, in the first shot, she's moving the painting with her left hand. In the next shot, her right hand is up by the painting, and the lever on the safe has changed position, even though there was no time to turn it. (00:09:55)
Snow Drifts - S3-E21
Revealing mistake: When future Hook is trying to stay hidden while Emma is making out with past Hook, there is a wide shot where future Hook sneaks past a corner, and you can see the face of Colin O'Donoghue's body double. (00:33:20)
Continuity mistake: When Elsa is walking down the middle of the street through Storybrooke, she is leaving a trail of ice on the road behind her. Shortly after seeing a wedding dress in a store window, she walks towards the store, and the trail of ice behind her is gone. (00:07:00 - 00:07:35)
Chosen answer: Even if one can see the future, it can be somewhat vague and left open to interpretation.
raywest ★
He can sees the future all jumbled up. It is like a puzzle, it is hard to put together, but even when he does put it together it is not set in stone the future can change.