Plot hole: When the group is walking through the jungle for the 2nd time, they have nothing more than their backpacks and a horse to accompany them. Suddenly we see them rowing down a river on a boat and raft. After making peace with the savages, when they have to let a group member go to get medical help, they have been washed ashore as they have been traveling on a single raft since the canoe was damaged by spear attack. How is it that they had a horse and an Indian guide to send away with their injured man? (01:16:55)
Plot hole: There is no logical reason to switch off the Bombe at midnight when the codes change. Firstly, Turing's proving the concept of automated code breaking, so even if it only finds the right settings days or weeks later, the experiment is worth doing, then you can work out how to speed it up to be operationally useful. Secondly, even in steady state operation, cracking "yesterday's" settings (and thus intercepted signals) is still going to be pretty useful in most cases. Threatening to smash the Bombe up at midnight is good stuff to add some movie tension but, in reality, it's nonsense.
Plot hole: When Ritchie appears at a pizza party sponsored by a local radio station, his manager Bob Keane is handing out copies of Ritchie's first album. In reality, the album had not been released until April 1959, two months after Ritchie's death. As the actual LP includes his biggest hit "Donna", Ritchie had not yet recorded (or even composed) the song in this part of the movie until a few scenes later.
Plot hole: When John retrieves the mail from the postman, Iris dashes outside. Less than 10 seconds after she closes the door, a car is heard, off-camera, honking a horn. Wouldn't John have found Iris so soon after that noise is heard? She doesn't seem to have enough time to allow for a search for her.
Plot hole: In the scene where William takes Murron for their initial ride, he shows up in pouring rain, yet all further shots show the two of them totally dry. The tone of her mother's voice when they get back suggests they did not spend the night together, and the whole sequence appeared in a couple hours. They could not have gone from soaking-wet to bone-dry that fast.
Plot hole: When Annie Sullivan, as Helen Keller's teacher, gives Helen a doll that makes a sound, when they are alone in the small house, Helen upends the basket that holds all her dolls, but when the doll makes a sound, Helen grabs the doll and makes the sound the doll makes; but Helen is deaf, so how could she have learnt to imitate it?
Plot hole: When Erica crashes at the Huston Raceway Park a helicopter from the University of Utah lands to pick her up, it doesn't make much sense to fly a trauma patient over three states; At least not until she is immediately stabilized at a local hospital. We even see a truck from the Huston International Raceway drive up to the accident.
Plot hole: Joan of Arc is called to save Orléans from the siege of the English. But if you look In the scene where we see a bird's eye view of the city, you will notice that there are no guards on its walls. A siege is the means enemy soldiers try to cut a city from its supplies and contacts. Those soldiers should be guarding it day and night, and sometimes even shooting arrows or rocks in it, until the city resigns. The siege we see at Orléans is nothing but a lonely catapult which shoots once a week.
Plot hole: When Pumpkin is telling Sayuri about Hatsumomo talking to Dr. Crab, she says that she was waiting outside during the conversation, and while she could hear it, she couldn't see them. However, at one point Pumpkin describes a facial expression of Dr. Crab.
Plot hole: How did Glabrus know about Silesian pirates aiding the slave army's escape? He informed the senate of this and yet was not made aware of it at the time of his capture.
Plot hole: In the scene where Jason has his 5th birthday party, after the party it's night time and Bev is sitting on her front step alone when she is startled by her old friend from high school. They begin to walk and talk. She says to him at one point that she is 22. Now when Jason is born, it is stated by her dad that she is 15, so if it is Jason's 5th birthday that would make Bev 20 years old, not 22.