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Percy Jackson & the Olympians: The Lightning Thief (2010) Poster

Goofs

Incorrectly regarded as goofs 

When Percy sees the final pearl in the Lotus Casino, on the spinner, it is on slot 33. When Percy picks it up later, it is on slot 15. While the number did change where the pearl was located, Percy was away from the table to rescue Grover and Annabeth. It is highly probable that the dealer collected the pearl and spun again as he would in a "regular casino" to keep up the illusion.
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Character error 

The substitute teacher, Mrs. Dodds, writes, "I understand a fury in your words But not your words" on the blackboard, when the actual line from Othello 4.2 is, "I understand a fury in your words. But not the words".
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Continuity 

In the Capture the Flag scene, a warrior of the red team shears off the blue horsehair plume on Percy's helmet with his sword. However, in all of the following scenes the plume is complete again.
After Percy enters the Lotus Casino in Vegas, the designs on his blue shirt are suddenly gone.
At Auntie Em's Emporium her lip color changes between scenes from red to purple.
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When Percy is in the Demigod infirmary after the fight with the Minotaur, there is a shield seen leaning against the table next to him as he sleeps. He is then woken up by Grover, the camera angle return to Percy sitting up, and the shield is gone.
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In one scene, when Percy is new to the camp, he & Chiron are talking alone by the lake. When the camera is on Chiron, Chiron's arms are folded. But, when the camera switches to Percy, Chiron's arms are suddenly down.
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After Percy beheads Medusa, her body is on the ground as Percy is wiping the sword clean. On her arm is the green pearl in plain sight, but when Percy bends down to pick up her head the pearl is covered by her sleeve.
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Pigeons outside the window of Percy's house disappear and reappear between shots.
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Factual errors 

When Chiron in centaur form walks, he looks strange - but it's not because of bad CGI. It's because a horse, like all four-legged animals, walks with a four-beat gait; whereas whoever animated Chiron clearly didn't know this and tried to force the "walk" into a two-beat, unnatural gait.
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Incorrectly regarded as goofs 

The ancient Grecian Perseus was the son of Zeus, not Poseidon. However, Percy here isn't supposed to be the Perseus from original mythology; he was given his name in honor of Perseus. It is revealed in the books and deleted scenes from this movie that Percy's mother had named him after the original Perseus because he was the only demigod to have a happy ending (instead of a tragic death) in hopes that Percy would also have a happy ending.
Both Percy and Annabeth are teenagers and in a real Las Vegas casino would not have been allowed to roam unaccompanied in the gaming area without someone over the age of 21. However, Lotus isn't a "real Las Vegas casino," it is an illusion specifically there to detain people, including underage demigods.

Revealing mistakes 

When Percy, Annabeth and Grover come to Luke to ask for help he is playing Call of Duty with a Playstation 3 controller while on screen Xbox 360 buttons are seen.
In the scene in Auntie Em's. Where Annabeth first runs into Medusa, she is wearing a turban. According to lore, Medusa has a head full of snakes, rather than hair. In that scene there is a small piece of blonde hair visible peeking out of the right side of the turban. Uma Thurman has blonde hair.
The woman who is in Auntie Em's Garden Emporium opens her eyes and turns into stone, her hand is resting on Annabeth's arm, but in the next shot, it is closed tightly around it.
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The statue of Athena in the Parthenon in Nashville is not the actual statue. The real statue is gold plated, has a different headpiece and is holding Nike not a spear.
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During the fight with Medusa, she knocks over a row of statues which fall on Percy, trapping him. As he tries to free himself it is clear that he was not stuck; none of the statues was even touching him.
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While the pearl is spinning on the roulette, and the pearl is behind the handle that sticks up, you still see the green pearl reflection as if it never moved.
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Annabeth is not able to release her arm from the hand grip of the woman turned into stone by Medusa but when Grover cuts off the stoned statue's arm with his sword, Annabeth is able to remove the stoned hand grip by simply shaking it off although it is clear that it was not broken.
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In the scene after Percy severs Medusa's head, there is no blood on his sword. After when walking to meet his friends he is seen wiping blood from it.
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In the final shot, the leaves on the small trees in front are noticeably being blown by the wind, but the leaves on the taller trees in back are perfectly still.
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See also

Trivia | Crazy Credits | Quotes | Alternate Versions | Connections | Soundtracks

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