Continuity mistake: In the scene right after Pan has fallen, the same pirate grabs Wendy twice, once right after Hook takes Pan by the throat and once after he hits Pan on the head with his hook. (01:27:50)
Continuity mistake: When Wendy says, "But...this is yours.", Hook pulls her up by her arm onto her knees and her hair goes from being straight down over her right ear, to the next shot, when it is again tucked behind her ear as it appears throughout most of the film. (01:29:20)
Continuity mistake: During Wendy's farewell to Peter, when Hook pulls Wendy up she says, "Tis just a thimble," and right beside Wendy a pirate grasps John at the neck with his hand. In the next side shot as the pirates laugh, the pirate holds John around the shoulders with his arm, however, in the next shot the pirate still clutches John at the neck with his hand. (01:29:25)
Revealing mistake: After receiving Wendy's real kiss aboard the Jolly Roger Peter quickly flies up and proceeds to fly back down. As he swoops down to the deck and lifts up two swords, most of the kids' eyes are not in sync with Peter's movements. (01:31:45)
Revealing mistake: After having been kissed by Wendy, Peter flies towards Hook, who is tangled up in the rigging of the Jolly Roger and slashes the lines of the rigging thereby releasing Hook. As Peter swipes at the lines it is very apparent that he only touches a few of the pre-cut lines and the rest simply fall away. (01:31:50)
Continuity mistake: In the scene after Wendy kisses Peter, Peter comes back down from the sky and cuts the ropes binding Hook. Hook is still tangled in the ropes when Peter tosses him a sword, but in the next shot, Hook flies away from the ropes as if he wasn't ever tangled in them. There wasn't enough time in between shots for him to cut the ropes himself. (01:32:05)
Revealing mistake: Jason Isaac's stunt double is easily seen in quite a few shots, for example when Hook duels with Peter on the Jolly Roger. His hairline is lower and the shape of his beard is different. (01:32:25)
Continuity mistake: When the children return home, the first exterior shot pans closer to show Mrs. Darling sitting in the red chair which is angled towards the window. In the next interior shots the angle of the red chair differs. (01:34:55)
Continuity mistake: When Wendy, Michael and John return to the nursery, Michael kneels down in front of Nana. In the next wide shot, the bear, etc., on Michael's back differs, as well as Nana's position on the floor. (01:35:05)
Continuity mistake: When Wendy, John and Michael return home, in the wide shot as they look around the two swords in the toy chest, at the foot of Michael's bed, are visible. When they go to their beds Wendy places her Neverland sword into the toy chest, but the two originals' positions differ - the boys' Neverland swords are visible on their beds. When Aunt Millicent walks in with the Lost Boys, as the Darlings hug, the toy chest is visible and the swords are gone. (01:35:10)
Continuity mistake: When the children return home, in a wide shot as they look around the nursery while their mother sleeps in the chair, the table's two legs are positioned near the outer edge of the small red rug. When Mrs. Darling walks out of the room the table is pushed farther back, close to the bookcase. The little rug near the corner curio changes between shots as well. (01:35:15)
Continuity mistake: After Wendy, John and Michael return home, from the shot of Wendy as she puts her sword in the toy chest, to the following shots, the amount of space between Wendy's bed and the corner of the wall on its left changes drastically. (01:35:20)
Continuity mistake: After the children's arrival from Neverland, they are in bed as Mrs. Darling, unaware of their return, stands and walks out of the nursery. In this shot there is a set of eleven identical books and another red book on the top shelf of the bookcase. However, when Mr. Darling hugs John now there are actually fourteen in the set of identical books along with the red book on the top shelf. (01:35:45 - 01:37:15)
Continuity mistake: When Mrs. Darling rushes back to the nursery, realizing that her children are home, she stands at the doorway facing Wendy, John and Michael and the blankets on Wendy's bed are very messy. However, when she hugs the children the blankets on the bed are spread quite neatly. (01:36:20)
Continuity mistake: After the children return, the shadows cast within the room change drastically in the following shots. For example, when the wall behind John's and Michael's beds is visible the shadows cast by items, such as the clock and light fixture, are very different throughout this last scene. (01:36:25 - 01:37:55)
Continuity mistake: When the children arrive home, John does not have a mark on his forearm. As John shakes his father's hand there is a long black mark above his wrist. During the family hug while they kneel on the floor the mark is smudged. When John is on the floor with his father and the Lost Boys, Michael dumps the treasure onto the rug and in the next shot as John holds one of the twins the mark on his forearm is long and clear now. The mark changes position as well. (01:37:15 - 01:38:55)
Visible crew/equipment: Upon seeing the children when they've returned home, Mr. Darling hugs John and Michael. As John turns his head to look at Wendy clearly reflected in both lenses of his eyeglasses are four-square studio lighting. This occurs numerous times, with different types of lighting equipment visible in both John's and Mr. Darling's eyeglasses, as well as other's eyes throughout the film. (01:38:30)
Continuity mistake: After the children return home, when Mr. Darling welcomes the Lost Boys to the family the boys all jump on him and then Michael pours the treasure onto the floor. In these and the rest of the shots the small red rug is in the middle of the floor, a completely different position than the previous shots, where it was under the table. (01:38:45)
Deliberate mistake: As the Darlings and the Lost Boys laugh in the nursery, the narrator says, "There could not have been a lovelier sight...except a strange boy who was staring in at the window." When the camera pans out through the window Peter's back is visible at the right of the window. This is not Jeremy Sumpter. (01:40:00)
Revealing mistake: After Peter watches the Darlings and the Lost Boys through the nursery window, he begins to fly off. The camera pans onto the rug to show Peter's exiting shadow on the long bright spot of light coming through the window, which Wendy notices. This lit area on the rug is much larger and brighter than in the previous or following shots. (01:41:35)
Answer: It's not that you never age, it's that you never grow up, i.e. pass into puberty and become an adult.
Myridon