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Harry Potter Plot Holes You Don't Need A Pensieve To See

List RulesVote up the most glaring and unforgivable plot holes from the Harry Potter movies.

First, let's get one thing out of the way: Harry Potter is arguably the greatest series in literary history. Not surprisingly, the films did not always live up the high standard set by J. K. Rowling. The plot holes in Harry Potter movies are often a result of the filmmakers deviating from the books. And sure, there are some logical inconsistencies in Harry Potter that may or may not have originated in the books themselves, but for the most part, the fault lies with the movies. 

These Harry Potter logic fails perpetrated in the movies might only offend book fans, but that doesn't make them any less egregious. What is Harry doing reading by wand-light in the Dursleys' house, Alfonso Cuarón? What happened to Snape's potion room protecting the Sorcerer's Stone, Chris Columbus? And when it comes to confusing things in the Harry Potter universe, everything with Polyjuice potion might take the cauldron cake. Sometimes it changes your voice; sometimes it doesn't. Either way, that's pretty sloppy filmmaking.

Here are a bunch of Harry Potter plot holes you'll want to obliviate straight out of your memory.

  • 1

    Harry Uses Magic Willy-Nilly Outside Of School

    Video: YouTube

    The opening scene of Harry Potter and the Prisoner of Azkaban is unforgivable. In the scene, Harry is in his room at 4 Privet Drive using the Lumos charm to read at night. There's just one problem – he's an underage wizard using magic outside of school, an act that's explicitly forbidden. What's more, he's using magic in a Muggle house. The Ministry of Magic would be on him like young Neville on a chocolate frog.

    Is this a major plot hole?
  • 2

    Does Polyjuice Potion Change Your Voice Or Not?

    Characters in the Harry Potter movies use Polyjuice potion numerous times. Whenever they do, they physically transform into someone else, but their voice remains their own. Except for one huge instance: Barty Crouch, Jr.

    Given the rules established in the films (and only the films) about voices remaining the same, Mad Eye Moody in Harry Potter and the Goblet of Fire should have, at the very least, a slightly different voice than the real Mad Eye.

    Is this a major plot hole?
  • 3

    Movie Dumbledore Is Dumb

    Video: YouTube

    Many fans think Richard Harris was an amazing Dumbledore who captured the character perfectly. Michael Gambon, on the other hand... not so much.

    The writing of this scene in Harry Potter and the Half-Blood Prince is probably the real culprit, but nothing Dumbledore says is consistent with the book. First, after they learn that a young Tom Riddle was indeed seeking guidance on making multiple horcruxes, Dumbledore says, "This beyond anything I ever imagined." Uh, no it isn't. In the novel, it's precisely what Dumbledore imagines. He had actually suspected Riddle's diary was a horcrux all along, and that there might be more given how careless he was with it.

    Then Dumbledore goes on to say the horcruxes "could be anything. The most commonplace of objects." Wrong again. They are only objects Voldemort viewed as extremely significant or important, another thing book Dumbledore understood about him.

    Is this a major plot hole?
  • 4

    The Death Eaters Just Walk Into Hogwarts

    Video: YouTube

    The entire plot of Harry Potter and the Half-Blood Prince centers around Malfoy fixing the Vanishing Cabinet so the Death Eaters can break into Hogwarts. He succeeds and a battle ensues, with students and teachers fighting Death Eaters in the halls of the school.

    Except in the movie, this doesn't happen. Yes, the Death Eaters are brought in, but they're literally allowed to walk through the school blowing everything up. Instead, the violence happens at the Weasleys' house, which makes no sense. It's not like Voldemort's whole plan was to commit arson against one wizarding family.

    Is this a major plot hole?