Best sci-fi movie character mistakes of all time
Character mistake: In the scenes in San Diego, all the scenes outside the sub are taking place during daylight hours. Immediately after the crewman relays the message about the mysterious telegraph transmission, the scene shifts to the sub. The commander asks what time it is in Melbourne and is told it is 1500 hours (3PM). But if it were that time in Melbourne, it would be 10PM in San Diego, and thus not during daylight hours.
Character mistake: In the scene where Steve and Josie prepare to leave to fight the giant robot at the beginning of the movie, Steve tells Will "Oh, Will, a reminder: a lot of the kids at Sky High will only have one super hero parent, not two." When he says "one super hero parent", he holds up two fingers. When he says "not two", he holds up only one finger.
Character mistake: Sarah is a trained expert with predatory animals. But when her jacket is covered with blood (and not just any blood, the blood of the infant T-rex), and they're in a forest surrounded with carnivorous dinosaurs, and she knows that they need to pass through Velociraptor territory, and she thinks that the T-rex might follow them, she doesn't think to take the jacket off. And the others, who also happen to be hunters who would surely know that the blood would attract predators, don't say anything about it.
Character mistake: The doctor diagnosing Will's illness tells Evelyn and Max that it's caused by "an isotope called polonium." Polonium is a chemical element, not an isotope. The word "isotope" refers to a form of an element (such as carbon-12 or carbon-14) not the element itself. It does not mean "radioactive substance", because many isotopes are stable. A doctor would know this.
Character mistake: Early in the story Dr. Gibbs rationalises the story to come by using two cars traveling the road at greatly different speeds to illustrate "Einstein's theory of relativity". He basically says that the slower moving car seems to stand still as seen from the much faster car's point of view. But in real Einsteinian relativity, just the opposite happens. When two reference frames are traveling with respect to each other, each sees the other's time advancing more quickly.
Character mistake: While Khan is "interviewing" Chekhov and Terrell, he stated, "On Earth, two hundred years ago, I was a prince, with power over millions." The official date for this movie is 2285. That would place Khan on earth around 2085 by this statement. However, it is made clear in the episode "Space Seed" that Khan and his followers escaped earth in the year 1996: nearly one hundred years earlier. Quite a way off to be a rounding error.
Character mistake: One of the top most taboo things for a super hero to do is reveal any aspect of another hero's identity to someone, especially a villain. But when Flash is trapped by the gray adhesive and the other Justice League members are about to take the villains away to disarm the bombs, Flash tells Green Lantern "Hal, go", calling Green Lantern by his first name right in front of Mirror Master.
Character mistake: When Will Riker comes to Troi's office and kisses her, Troi says that she has never kissed him with a beard before, but in the third season episode "Menage a Troi", Troi does in fact kiss a bearded Will Riker, while on leave at Betazed, in the Fifth season "The Outcast", and again in season six's "Man of The People."