Continuity mistake: Will walks into the blacksmith shop, takes his jacket off and tosses it onto the stones near the fireplace. His jacket lays differently on the stones in some shots throughout this scene. These two shots are examples: when Jack says, "Crossing blades with a pirate," and when Jack jumps off the stones after spraying Will with the soot. (00:22:55 - 00:26:20)
Continuity mistake: When the barrels are being tossed off the Interceptor there is a shot of a crewman in an orange jacket holding a cannonball in his hands and passing it to someone on his left. As the shot pans to the side, behind that crewman that passed the cannonball, we see part of the head of someone and also see Will's shoulder and arm - he just climbed out from below deck. Yet in the very next shot, Will is just coming up from below deck. (Perhaps better in slow motion.) (01:22:40)
Continuity mistake: Elizabeth has a light tan and her hair has lighter streaks running through it, in the shots on the island with Jack. In the following scene, on the Dauntless, her tan is gone and her hair is normal again. Confirmed on commentary. (01:35:00 - 01:40:00)
Continuity mistake: Will runs down the stairs at the prison and says, "You! Sparrow!" and Jack responds, "Aye." In the following shots Jack's hair with red ties and the white shirt string, both on his left side, change position, arrangement, or even existence in the wide shots, and close-ups while the two talk. Earlier, after Jack saves drowning Elizabeth, the position of the red scarf around his head differs between shots - note the beads over his eyes. As a matter of fact, the positions of his red scarf ends, strings of beads, bone, etc., in Jack's hair, ALL change in consecutive shots many times throughout the film, from the moment he is first seen on the Jolly Mon, to the moment he makes his dramatic exit. (00:42:25)
Continuity mistake: When Jack and Will are under the bridge, and Jack says, "We're going to commandeer that ship. Nautical term," his right cheek is clean. When he turns to ask Will "One question about your business..." there is a broad black smudge running from his right cheek to the right side of his nose. As he turns around after Will's answer and says, "No worries..." his right cheek is again clean, without ever having touched his face. (00:44:35)
Continuity mistake: At the blacksmith shop, there is a wicker basket with rope lying at the top of it located near the steps and the cart. This rope is positioned differently in the basket throughout this scene. Some examples are: in the shot right after Will says, "You threatened Miss Swann," then when Jack tosses Will's red hot sword away, and in the close-up of the cart slipping off the broken bench. (00:23:00 - 00:25:10)
Continuity mistake: Aboard Interceptor, when Jack causes the boom to slam into Will, in that wide shot the belaying pin on the rail across from Will is seen. When Jack says, "But I can't bring this ship into Tortuga all by me onesy, savvy?" behind him to his left, the belaying pin is seen again. The lines hanging from that belaying pin differs in both shots. (00:49:35)
Continuity mistake: After the cutting of Elizabeth's hand, the knife's blade is shown six times. 1st- a wide shot from behind, the blade has no blood on it. 2nd- a close-up, as Elizabeth lets go of the medallion. 3rd- a front shot, as Barbossa lets go of her hand. 4th- when Barbossa puts the gun back into his belt. 5th- when he holds the blade up to his face, we see both sides. 6th- when he grabs the medallion out of the chest. In each of these shots the blood on the blade differs in amount and/or position on either side. This has nothing to do with the 'dripping' of the blood down the blade. (01:12:15)
Continuity mistake: When Jack is in the Fort Prison, he's trying to get the dog to bring him the keys. When he says, "Good boy. Come get the bone," the handle sticking out of the pail on the floor is leaning away from the cell. When the dog comes closer, and Jack says, "That's it, doggy," the handle in the pail is facing towards the cell door. (00:36:10)
Continuity mistake: In the blacksmith shop, next to the fireplace and anvil, there is a table with a variety of tools and other objects. The variety and placement of the items on that table changes when the table is shown. Some examples are, as Jack puts his hat down, then when Will notices Jack's hat, and later when Jack says, "Ta." (00:21:00)
Continuity mistake: In the blacksmith shop there's a table with asst tools. In all these shots a few of the tools are arranged differently and in some shots they're completely different tools. 1 - when Jack notices Mr Brown. 2 - behind Jack when Will starts to come into the shop. 3 - when Will says, "Right where I left you." 4 - behind Will, when he and Jack duel. 5 - behind Will, when Jack holds the gun on him. (00:21:55 - 00:26:30)
Continuity mistake: Aboard the Black Pearl while watching Interceptor explode, Elizabeth runs over to Barbossa and yells, "You've got to stop it." While Barbossa holds Elizabeth, in the first shot behind her, the left shoulder of her burgundy dress is on her shoulder. In the next front close-up shot, her dress is off her left shoulder, then in the next shot behind her, her dress is on her shoulder again. (01:30:55)
Continuity mistake: As Will stands on top of the rail of the Black Pearl, holding the gun, in the close-up and in the wide shots of Elizabeth, her appearance - the neckline of her dress and slip, differs. (01:31:30)
Continuity mistake: When Mr Gibbs shouts what sounds like, "Do it you gobs, or it's you we'll load into the cannons!" while the Region 2 DVD subtitles read "Do it you gobs!" which matches his mouth movements, the Region 1 subtitles say "do it you dogs..." yet his lips clearly form a B not a G. A bizarre difference between versions. (01:24:10)
Continuity mistake: Near the beginning of the film, after Jack rescues Elizabeth and her father gives her a jacket, she stuffs the medallion down her shirt, Jack then takes her hostage, where the Medallion is visible around her neck. (00:17:00 - 00:19:00)
Continuity mistake: When Jack is knocked out by the bottle he has one hand raised with a gun to shoot Will but when he is seen on the ground both his hands are up by his head. The gun-hand yes, fine, but the other one would be by his side or in a different position at least.
Continuity mistake: Will has a small tear in his shirt at the right shoulder. Sometimes it's bigger, sometimes it's smaller, and the shape changes throughout the movie. (00:48:30 - 01:22:50)
Continuity mistake: As Jack and Will are duelling while standing on the cart, and then up on the beams, in wide shots, Will's hair is pulled back perfectly in the ponytail, but in the close-up shots he has loose hair on the sides that is not held in the ponytail. This type of thing occurs numerous times in the film. (00:25:20)
Continuity mistake: In the scene when Jack is on the Interceptor for the first time a white X is formed with straps on the guards' uniforms. A few minutes later the strap moves up 3 buttons.
Continuity mistake: Just after Jack and Will have duelled, Jack gets knocked out by the drunken Mr Brown. Norrington looks at Mr Brown and says his line, yet when the camera cuts to a different view, he is now looking at Jack and not at Mr Brown. (00:25:55)
Answer: The curse needs the blood of everybody who took a coin from the chest. All the other pirates have already contributed so, as the movie opens, the only blood needed is Will's, substituting for his father. During the finale of the movie, Jack takes a coin from the chest, adding himself to the curse, so his blood is now required as well as Will's.
Tailkinker ★
But I didn't see any blood on the coins, and none of the pirates cut themselves, even before Will became part of the mix.
Yes, the other pirates did cut themselves before Will came into it, off-screen. The lack of blood on the coins can simply be explained as most of it dripping to the bottom of the chest, it being washed away by storms blown into the cave, or by the fact that they didn't drop that much blood on it in the first place.
When they had Elizabeth they believed she was Bill Turner's daughter, but they all thought the curse had failed, none of them had cut themselves so it makes zero sense.
They had been collecting back the coins for years. During that time they repaid their own blood. All they needed was the last coin and the blood of Bill Turner to break the spell.
lionhead