Factual error: Semi-automatic pistols, rifles and fully-automatic rifles and machine guns never eject spent shell casings in the show.
Factual error: In the last minutes, the show looks forward to future challenges, in effect a preview of the never-made 3rd series. The oracle says they must find "the golden fleece, woven long ago by the Stygian witches." But the golden fleece, or indeed any fleece, is not a woven fabric. (Today's fleece is a modern invention).
Factual error: Through the entire episode, the nightwatcher sand worm is moving through sand like a whale does through water. It's a large, massive creature. Yet almost no sand is really displaced or moved around by it. Only a bit of shading is used and some bits of sand are shown thrown up when it surfaces, but there should be large "waves" or wakes of sand as it moves through it, especially in the faster moments. The most we see is it fills in BB-8's sand trail as it moves under it at one point. (00:00:43 - 00:02:25)
Factual error: Will is asked by Jai to place his wrist watch - which is filled with explosives - against a wall. He does, and it somehow sticks to the vertical concrete wall. An adhesive back would have been noticed by Will, as it was against his skin on his wrist. Not to mention that an explosion in a contained space that small would have deafened them both, or worse. (00:35:05)
Factual error: The group finds an underground sea and there is a flock of pterosaurs flying overhead. The professor identifies the pterosaurs as the missing link between pterodactyls and archaeopteryx. This is not true as archaeopteryx (and other birds) did not descend from pterosaurs but from a branch of theropod dinosaurs.
Kill Oscar - S2-E5
Factual error: When Katy takes out the chart with the OSI board, the word 'Management' is misspelled as 'Managment'.
Episode #1.1 - S1-E1
Factual error: There is a view of the night sky in southern Africa. However, both the Big and Little Dippers (along with Polaris) are visible. In general, these constellations are not visible in the southern hemisphere, and where they are (North of 1° South latitude) they are very close to the horizon. The Big Dipper (Ursa Major) is to the left of the screen and Polaris (part of the Little Dipper = Ursa Minor) in near the top-center. This occurs shortly after the lion cub scene. (00:44:00)
Factual error: Every episode in the first half of this series begins with the same phrase and the same map of the Italian peninsula. Said map though misspells, in a very Japanese way, the north-eastern city of Trento, wrongly appearing as Torento. (00:00:01)
Factual error: At the end when Skeksis enters the crystal chamber, in the overhead shot you can see 22 arcane symbols around the crystal when there should only be 18, one for each exiled skeksis. (00:45:53)
Chapter 10: The Passenger - S2-E2
Factual error: The premise of the episode is that Mando needs to travel at sublight speed or else the fragile eggs will die. They need to travel to a nearby star system, though, not just a planet. Stars can't be too close together, so Mando is in for a trip that would take him literally years, which is not reflected at all by what is shown in the episode. (00:08:00)
Factual error: When the X-Men are surfacing after crashing their jet into the dam, Shadowcat is shown phasing through the jet and pulling Wolverine and Beast through with her. Since Wolverine's bones are coated with a heavy metal, he wouldn't be able to float to the surface. He would sink instead. (00:14:57)
Factual error: Sir John Franklin, Francis Crozier and James Fitzjames all wear a crown over an anchor on their epaulettes, the rank badge for a captain with over three years in rank. This is correct for Franklin and Crozier, but Fitzjames only held the rank of commander, and should therefore only be wearing an anchor on his epaulettes.
Factual error: When Jane is putting up the lost poster, the number to call is 1-800-saw-him. However, this is only a 6-digit phone number when it needs to be 7-digits (not including the 1-800 part).
Factual error: A passerby tells Sheldon Sampson that the stock market has just gone "tits up." This is a British expression that you would likely not hear in the United States, and you certainly wouldn't hear it in the 1920's.
What If... Captain Carter Were the First Avenger? - S1-E1
Factual error: In the intro, we are shown how Nazi Germany spreads across Europe - but after showing Denmark being conquered, it is shown to start spreading across Sweden. Sweden was never occupied by the Germans in WWII.
Suggested correction: I feel like this falls under the "Not a mistake because it's an alternate universe" umbrella. We're in an entirely different universe with a different timeline in this episode.
The show also makes a point that the only difference should be the minor choices or events befalling the MCU characters, and how these minor things have huge consequences for them, basically creating a new, alternate timeline. Basic world history before these events is not affected by the new timeline.
Suggested correction: The black spot spreading is not representing territory physically conquered by the Nazis, but more of their sphere of influence expanding. It is a steady spread and not a true representation of the war's progression. You can notice how Switzerland is also covered by the black, even though it was neutral during the war. Nor was Italy conquered, but their ally instead.
Factual error: Dario Brando dies in 1880 (date on the gravestone) but when he was screaming at his son from his bed, Dio was reading "The Rise of Silas Lapham", which while being appropriate for his character, would be published only 5 years laters (started serialization in 1884).
Reptiles in the Rose Garden - S1-E1
Factual error: After the White House is teleported to the Mushroom Kingdom, the President can be seen still using his phone, but it would not work as it would be disconnected from the landline. (00:03:44 - 00:07:19)
Factual error: In s01e08, "Q and A", when Yelena is playing chess, we see her use the touchscreen which represents the chessboard. However, the bottom left corner is a white square when it should be a dark square. The board is orientated incorrectly, even though the board on the floor isn't.
Factual error: In the giraffe scene, the Salt Lake LDS Temple can be seen in the background. However, this view of the temple is as it looks today. The building has been undergoing earthquake and stability renovations for a few years (as of 2024), and is completely shrouded in scaffolding. That is the view shown here, and not what the temple would have looked like when "abandoned" in 2003. Also, many of the tall downtown buildings shown in these shots did not exist in 2003.
Factual error: Season 1, Episode 10: Lee is trying to get out of the underworld on his capsule with the rescued others. They all get in, and he closes the top hatch by turning the hatch wheel clockwise. Trying to take off, a wire becomes disconnected outside, and Lee has to go out again. He turns the hatch wheel clockwise, and this time it opens instead of closing. If it was clockwise for close, it should be counterclockwise to open.