Continuity mistake: A sleepy Raven snuggles up to Charles and tells him to read something to her. He reads her his thesis. The way he holds his thesis and the way his left hand rests on the sofa behind her is different between shots. (00:13:40)
Other mistake: In the credits James McAvoy is listed as Charles Xavier (Age 24), then Laurence Belcher is listed as Charles Xavier (Age 12). The opening scene plays in 1944, while the rest of the movie plays in 1962 - a difference of 18 years, not 12.
Other mistake: Sebastian Shaw finds the mutants at the CIA outpost, removes his helmet and approaches them to deliver his monologue. When the shot cuts to the group of mutants huddled together, Havok can be seen making a goofy face at someone off set before turning his head forward and getting back into character. (01:05:48)
Revealing mistake: Watch when young Charles meets young Raven. Look closely and you can see the zipper on the child actress' costume.
Continuity mistake: The bartender points a gun at Erik, and his finger is inside the trigger guard. When Erik pushes the trigger using his superpower, suddenly the trigger guard is free of the finger. This is intentional, intended to illustrate the fact the Erik pushes the trigger, rather than the bartender pulling it. (00:24:40)
Character mistake: When trying to teach Banshee to fly, he is told to make his sound waves super sonic. Sound waves cannot be super sonic. Sound can only travel at the speed of sound, it always does. I guess they were trying to tell him to use a very high frequency, but the speed would still be the speed of sound.
Continuity mistake: When Erik is first attempting to lift the submarine, he'd using his left hand. In subsequent scenes, specifically when Riptide turns into heavy wind to break Erik's grasp, he's now using his right hand.
Revealing mistake: When Xavier saves Erik from drowning, the two have an exchange of words while floating at the water's surface. During these shots the water is churning violently around them but the two look stationary, indicating they are standing on a solid platform.
Chosen answer: He's not okay with it, but he knows that Erik's views appeal strongly to her. To all intents and purposes, she's already made her decision - to try to stop her would likely only lead to an argument, which is not how he'd want them to part. Plus there is the somewhat major side issue that Charles has just been shot, so it's not really the right time for a discussion on conflicting mutant philosophies.
Tailkinker ★