With Glass Onion: A Knives Out Mystery finally arriving in theaters, it promises to outdo the original movie with an even bigger ensemble cast and a multifaceted mystery that will require the viewer's full attention. Rian Johnson will be hoping he took account of all of the details whilst spinning so many plates, as the movie buffs on Reddit are always ready to point out a plot hole if one appears.

It wouldn't be the first great movie to have a massive plot hole, with beloved movies like Ant-Man and The Little Mermaid both having their issues. Meanwhile, huge movie franchises like Star Wars and Harry Potter haven't escaped the keen eyes of Reddit either.

The Airplanes In Die Hard 2 (1990)

Available On Starz

Bruce Willis on the poster for Die Hard 2

Where the first Die Hard movie thrived on its contained skyscraper setting, Die Hard 2 also found a decent amount of success putting John McClane in a Washington Dulles International Airport that's been taken over by terrorists. It's a race against the clock to stop them before the incoming planes run out of fuel meaning total catastrophe.

Redditor GiddyUp18 has a problem with that premise, however, and comments that "in that particular area, they are no more than a half hour from a dozen different airports." Rather than circling overhead and adding to the tension of a thrilling movie, the planes would probably have simply landed somewhere else.

Stealing A Plane In Wonder Woman 1984 (2020)

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Wonder Woman standing in a mall in WW 1984

Die Hard 2 isn't the only well-regarded movie with some airplane-based plot holes as Wonder Woman 1984 also had some issues that bothered Redditors in the same area. Redditor IamNobody85 wanted to know how "a display airplane [had] fuel" and also why Diana turning the aircraft invisible made it untrackable through modern technology as well.

Other Redditors also pointed out the unlikeliness of Steve Trevor being able to fly a modern jet plane given how much technology has changed since his era, no matter how good of a pilot he supposedly is. Having the pair steal a plane from the military base was a fun idea but one with some issues on scrutiny.

Hades Not Realizing Hercules Is Alive In Hercules (1997)

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Hades looking annoyed in Disney's Hercules

Despite its liberal approach to adapting the source material, Disney's Hercules is still easily one of the best movies based on Greek mythology. Whilst the fact it never took itself too seriously meant it could get away with a lot of silly moments, there was one issue that Redditor TheRealPyroGothNerd found that spilled over into plot hole territory.

According to them, when Hades sends Pain and Panic to murder the young Hercules and they fail, "Hades would have been able to check to see if Hercules actually died very easily." In fact, as the overseer of the underworld, it's hard to believe he wouldn't check that such an important task hadn't been completed properly, making the entire plot from that point on a little unbelievable.

The Tiny Tank In Ant-Man (2015)

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Ant-Man Mistake Tank Weight

Die-hard MCU fans will know that the Marvel franchise has its share of plot holes in all of its storylines, but it's usually just about vague enough about the powers at play that it can get away with it. Unfortunately, an attempt to actually explain Scott Lang's powers in the first Ant-Man movie meant it walked right into a giant plot hole.

That's because of a comment Hank Pym makes about things having the same mass even if they're shrunk. As Redditor PokemonGirl77 points out, "if this is the case, then how was Hank carrying the tank around if it still has its same mass?" If Ant-Man's mass stays the same, then so should the tank, suggesting that Hank would have to have already been strong enough to pick up a full-size tank beforehand.

The Marauder's Map In Harry Potter And The Prisoner Of Azkaban (2004)

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Peter Pettigrew groveling in Harry Potter.

The Marauder's map is one of the most powerful tools in the Harry Potter movies thanks to its ability to identify people even when occupying another form, such as Peter Pettigrew when disguised as a rat. Whilst that proves key to the plot, Redditor Megabot555 thinks it also undermines it slightly.

That's because Fred and George supposedly had the map since their first year but failed to see "the massive Peter Pettigrew on top of Ron’s name for years." It's hard to believe the pair wouldn't look at their younger sibling's location even once whilst Pettigrew was around and grow suspicious.

The Tether Cut Scene In Gravity (2013)

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Ryan Stone in space looking scared in Gravity

Whereas most science fiction movies don't have much claim to realism if any, it's the very fact that Gravity seems grounded in actual science that makes it subject to more scrutiny from eagle-eyed fans. That's why Redditors like rob5i think the movie was ruined by one particular scene.

According to them, the moment when Kowalski has Dr. Stone cut him loose to save herself is "complete nonsense as there is no physical force pulling him away. With the slight tug on the tether, he would have floated over to her." Interestingly, whilst some big names including Neil DeGrasse Tyson agree with this, NASA engineer Robert Frost told Washington Post that he believed the reasoning was sound, meaning it may not be the plot hole it seems.

Gordon Cutting Off His Foot In Saw (2004)

Available On Hulu

Cary Elwes holding a Saw in Saw

Saw is a movie franchise infamous for its brutally gory and punishing moments and one of the most vivid came in the first movie in the series. That was when a desperate Gordon, realizing the phone he needs is out of reach and still chained in place by his ankle, sees no other choice but to sever his own foot.

(Warning: The video contains graphic content.)

Redditor Constance-Morton wants to know why he didn't "just use the saw to get the phone that was just barely out of reach." Whilst other fans have their own explanation for this, with some suggesting he cut off his foot to confront Adam rather than reach the phone, it's just one example of how a healthy dose of suspension of disbelief is needed to enjoy the horror franchise sometimes.

Ariel's Stolen Voice In The Little Mermaid (1989)

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Ariel bathing in a pool in The Little Mermaid

Whilst it's clear that Ariel might not be the smartest mermaid in Atlantica after she trades away her voice with everyone's favorite Disney villain Ursula for the chance to live on land, there's still one oversight she seems to make that goes over into plot hole territory. As Redditor 25thNightStyle puts it, "Girl, just write things down."

Though that might sound difficult underwater, the fact that Sebastian is seen holding sheet music and Ursula makes a written contract in the first place seems to prove that written language and underwater writing are very much things in Atlantica. Perhaps the best way to suspend disbelief is simply to assume Ariel wasn't quite smart enough to ever have the idea.

Ben Kenobi's Memory In Star Wars Episode 4: A New Hope (1977)

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Ben Kenobi Luke Skywalker and C3Po in Star Wars

George Lucas had a challenge when writing the Star Wars prequels decades after the first movie had aired and, for the most part, he did a reasonable job ensuring the movies stayed cohesive. Unfortunately, there were still a few oversights that one Redditor considers plot holes.

They mainly want to know why Obi-Wan didn't "remember R2-D2 and C-3PO" when being reunited with the droids after the prequels showed that he'd known the pair for a long time. It's far from the only example in the movies, with others pointing out the absurdity of hiding Luke on Anakin's home planet and having him retain the Skywalker name when it could only make them easier to track down.

Nobody Believes In Alien Abductions In Independence Day (1996)

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Randy Quaid in Independence Day

The worst plot holes are ones that completely undermine the movie's central premise but, when movies are as ridiculous as Roland Emmerich's Independence Day, plot holes just add to the fun instead. That's why Redditor distantapplause can see the funny side in what they think doesn't make sense about the plot.

That's that "everyone looks at Randy Quaid like he’s crazy for saying he was abducted by aliens… as the world is currently being invaded by aliens." If there's anything that could make an abduction story believable, it would be the active alien invasion they're currently trying to survive.

NEXT: 10 Mystery Movie Endings So Bad They Ruined The Film, According To Reddit