Continuity mistake: In the beginning of the movie just after the East India Trading Company soldiers have ambushed Sao Feng, Barbossa and the others, Jack the monkey lays a rocket on the side of the bridge, if you watch closely, the rocket moves/rolls to its left, yet just before it flies through the air it's straight again in this shot.
Other mistake: When Beckett walks through the ship which is being destroyed by cannon fire in slow-motion, you can see things like banisters and railings exploding right by him, and yet no cannonballs are seen, the ship just spontaneously explodes.
Continuity mistake: When the Flying Dutchman and the Black Pearl destroy the Endeavor, they work their way from the front to the rear of the ship. Yet the wave of destruction is actually shown to be moving forwards along the ship following Lord Cutler Beckett down the steps from the wheel.
Other mistake: After the ship goes over the waterfall, the entire crew is seen crawling from the ocean onto land, completely soaked. However, Mr. Gibbs' beard is completely dry.
Continuity mistake: When Elizabeth is holding a knife to the Chinese man's throat, the other man whistles to alert them of soldiers on the bridge. Elizabeth then grabs hold of her large hat, as she is turning and moving back against the wall, yet in the following shot her hand is down.
Continuity mistake: When Captain Vallenueva says, "I still agree with Sao Feng," and slams the pistol down, things on the table change position in following shots.
Continuity mistake: After Jack and crew are brought back to life, Elizabeth looks out to sea and says "it's a sunrise". Then there is a shot of Barbossa looking at the sunrise. In the next shot he quickly turns around and points his pistol at Jack. The lighting in these two shots changes significantly, where the first is warm, red, sunrise-type light, and the next shot looks as though it was filmed in the middle of the day.
Continuity mistake: Close to the beginning of the film when Barbossa is explaining to Will about the green flash, look closely at the chinese man's hat, it has two icicles on the front of it, and in one particular shot just after Pintel interrupts Gibbs you can see that one of the icicles has been broken or dropped off, and then in the following shot it has reappeared again.
Factual error: Singapore seemed to be predominately East Asian when in fact it should have been predominately Southeast Asian. Totally different race. The Chinese only started settling there in modern times.
Continuity mistake: When the pirates arrive at the island and Barbossa cries "It's Jack!", Elizabeth's face swaps from spotless to covered in hairs.
Continuity mistake: During the maelstrom battle when Will stabs Davy Jones, his shirt is noticeably soaking wet. But after he is knocked to the side of the ship, his shirt is nearly completely dry.
Continuity mistake: When the ship is sliding through the white desert there's a close-up of Jack in awe putting a funny face. He's got a bang of hair on his left cheek. A shot later from a different angle the hair disappears.
Continuity mistake: In the scene on the Dutchman where Bootstrap runs through the Admiral, he stabs him from front to back, but when it shows the Admiral lying on the deck he is run through from back to front. (01:27:15)
Continuity mistake: When Jack uses the cannon to propel himself back to the Pearl and everybody runs up the stairs, Will is holding a pistol and his hands are free, however in the next shot he's still chained.
Continuity mistake: Near the end of the film, during the close haul battle with the Endeavour, the East India Trading Co flag on the back of the Endeavour changes during the scene from initially being blue with white letters into white with black letters. This is first noticeable during the last overhead shot of the ships before everyone yells "fire!"
Continuity mistake: When Elizabeth is giving her speech about the crew of the Pearl, her arm is either straight or bent depending on the angle. (01:56:00)
Answer: He agreed to do a job in exchange for eternal life, with a few limitations. If he refused to do that job he'd be cursed until he fulfilled his duties, but that doesn't excuse him from the details of the previous enchantment. He didn't simply choose not to walk on land, he couldn't.
Phixius ★