Continuity mistake: In the very last scene when Bo is hugging Stanley before the game it reveals his "Never Back Down" tree tattoo on his lower left arm. Yet right after in the closing credits and presumably depicting that same game it showed his left arm after taking a shot with the tattoo removed.
Continuity mistake: During the time Sean and Kunle are talking to Bianca after class, Sean is wearing two gold necklaces but only the longer one is showing a few times. (00:04:30 - 00:05:41)
Factual error: While playing soccer in the background, Ali's "credentials" were displayed across the screen. Under "Academics", Ali is listed as "MEMBER OF THE NATIONAL HONORS SOCIETY" - but "Honors" should be singular ("Honor"). It is also odd to state "All 'A' honor roll." With a GPA of 4.3, something to the effect of "Highest Honors with Distinction" would be more likely. [It is possible to receive a "B" in an Advanced Placement course yet have a GPA above 4.0.]. (00:17:00)
Deliberate mistake: After Sam freed Gary from being tied up by the aliens, Gary pulled off the cast he got earlier that day and was able to use his left arm as though it had never been broken. (00:45:43)
Continuity mistake: During the "Quiet Game," the taser model changes when Rachel licks it and finishes the challenge.
Continuity mistake: The patch of dirt/mud that Briggs had on the left side of his face near his eye when he woke up tied to a chair in Gus' barn disappeared and reappeared (in a different shape) a few times (e.g, when he knocked over his chair, when he stood up, and when he was inside Gus' house). (00:33:12 - 00:36:08)
Continuity mistake: Honor's laptop is on the bed, behind her back, with the screen lit. It automatically goes into timeout. Honor doesn't move from where she is sitting on the bed or turn around, but the screen is lit again (display is showing) without her waking it up. (00:51:35 - 00:53:26)
Character mistake: Nolan said, "Everybody knows that no sharks swim in freshwater" and Spencer said, "They don't come into freshwater", but there are freshwater sharks (e.g, river sharks) and bull sharks (not true freshwater sharks) can survive in saltwater or freshwater. Jacob Harper (National Aquarium) pointed out eyewitness accounts of sharks swimming up the Mississippi River and "bull sharks have kidneys that recycle salt" but did not mention the glands near their tails that help keep salt in their bodies. (00:08:08 - 00:29:50)
Other mistake: Laura's Arizona license plate (G 652P) was, understandably, a combination or blending of the design from Jan 2008 - Apr 2020 (blue/white/yellow horizontal colors) with a serial format closer to that of the mid-1950s, but improper for either time period. The 2008 - 2020 plate serial format was "ABC 1234." Laura's 1955 plate - when the serial format was "A - 12345" - should not have had a letter ("P") on the far right. ("G" could be the code for Gila, Graham, or Greenlee County, but which one?). (01:24:19)
Deliberate mistake: Elizabeth will not be able to save Mateo from falling backwards into the fire pit by grabbing his hand or pulling him back after his whole body is suspended over the edge. (01:13:47)
Continuity mistake: The orange feather toy that was in the cat bed with the cat when Sam got to the bookstore was not there a couple camera shifts later. (00:25:33 - 00:26:25)
Deliberate mistake: Abraham is sitting to the right of and slightly behind the cross he hammered into the ground, but is about 3' away. When there is a close-up, Abraham is much closer to the cross - the end of the crossbar to the right is directly above his shoulder and his knees appear to be close to the vertical bar. (00:45:15)
Continuity mistake: There are orange traffic cones about 3' from each side of the front bumper of Sarah's car, but they are not always visible when they should be. In the right-rear view of the car, the left cone is not visible, but the car cannot conceal it. The traffic cone is visible before Aden is walking around the front of the car, but not when he is walking to the door. The tip of a cone is visible some distance opposite the rear passenger door, but cannot be the one near the front bumper. (00:01:52 - 00:02:55)
Continuity mistake: The placement and angle of the "Not Friendly" sign on the dead security guard's upper right body changes from when Elvis is looking at him down the hall to when Elvis is kneeling next to his body. Initially, the words are perpendicular to the guard's right leg (angled outward to the right), then to the top of his right shoulder. (00:44:45 - 00:45:19)
Continuity mistake: The position/angle of the telescope that Ronald uses to watch the nude lady and spot Sky in Chris' house doesn't match how the telescope was supposedly redirected. The telescope (which is already oddly angled toward the side window sill and initially corresponding to about 8:10 on a clock) would sometimes correspond to roughly 9:17 but awkwardly between 10:20 and 11:20 other times. Despite the different angles, Ronald was watching the same nude lady. (00:41:56 - 00:44:36)
Revealing mistake: This happens in the second ceremony when Wolf didn't press the button to shut off the lights to steal the golden dolphin because of the good comments. Few seconds later, the lights shut off, and you can see that the meteor on the top disappears at the time.
Factual error: It's winter in Montana, yet there are rattlesnakes out in the cold.
Continuity mistake: Marge had her left hand on a Win Fall ticket that (supposedly) was coming out of the printer on the side of the machine. Marge moved her hand away without removing the ticket. When the camera shifted, the ticket was not there. (00:54:10)
Continuity mistake: The way Banshee's bangs are combed back vary a few times in a couple minutes (elevator fight scene). Sometimes, the left side is higher than the right side and other times the highest point is near the middle of her forehead. The "curve" at which the bangs are combed toward the right side also vary, from little to no curve to wavier toward the right. (00:06:36 - 00:07:57)
Continuity mistake: Kol shouts, "Stop the car!" Adam slams on the brakes from a cruising speed, yet miraculously, the car is bumper-to-bumper with a parked red SUV. When Kol gets back into Adam's car, the red SUV should be visible. However, outside of the windshield, there is a white blur. A car drives close by on a perpendicular road that wasn't there before Adam stopped. (00:15:48 - 00:16:20)