Since the late '90s, Harry Potter and the wizards of Hogwarts have been a global phenomenon, first with the acclaimed novels and then joined by the award-winning film franchise. Those films - all eight of them - have been seen by millions of viewers all over the world. But that level of success also comes with a certain amount of scrutiny. In a vast, complex world of magic and fantasy there are bound to be some plot holes, and dedicated fans have spotted quite a few of them. For example, many people have pointed out that having a time travel device like the one used in The Prisoner of Azkaban would probably have solved a lot of Hogwarts' problems had they kept using it. Others point to inconsistencies regarding Horcruxes, the basilisk, and thestrals. There are even some plot hole theorists that wonder why Harry has to wear glasses with so many magic spells available. To learn them all, check out this wizarding list of plot holes Harry Potter fans have uncovered.
Cedric Diggory's Death Should Reveal The Thestrals
From Redditor /u/Chuckgofer:
In Order of the Phoenix, we learn that the magic horseless carriages aren't actually horseless, but drawn by thestrels, A sort of magical reptilianesque pegasus. One of their main traits is that they are invisible to anyone who hasn't seen someone die. Luna can see them, and Harry can see them in Book 5.
I get why he couldn't see them in the first 4 years at Hogwarts. Lets assume he didn't really SEE his mother die as a child. Or even if he did, wasn't really aware of it.
However, at the end of Goblet of Fire, during the last event of the Triwizard Tournament, he witnesses Cedric Diggory get killed by Voldemort.
It stands to reason, then, that Harry should have seen the thestrels pulling the carriages back to Hogsmead station at the end of Book 4. He had just witnessed Cedric die.Can't be unseen?
Practicing Magic Outside Hogwarts
From Redditor /u/leashkid:
So the Ministry of Magic keeps insisting that students cannot use magic out of school and yet at the start of the third? movie Harry learns Lumps Maxima under his bed covers. How is he allowed to do that? I mean he almost gets expelled because Dobby levitated pudding in the second book...Can't be unseen?
Prefects And Point Docking
From Redditor /u/Duplakk:
In the 9th chapter, "The Writing on the Wall" of Chamber of Secrets, there is this part:
“You don’t care about Ginny,” said Ron, whose ears were now reddening. “You’re just worried I’m going to mess up your chances of being Head Boy!” “Five points from Gryffindor!” Percy said tersely, fingering his prefect badge. “And I hope it teaches you a lesson! No more detective work, or I’ll write to Mum!”
This shows, that Percy as a prefect was able to dock points. Whereas in the 28. chapter, "Snape's Worst Memory" of The Order of the Phoenix:
“Now, do you really want to finish that sentence, Granger?” Draco Malfoy had slid out from behind the door, followed by Crabbe and Goyle. His pale, pointed face was alight with malice. “Afraid I’m going to have to dock a few points from Gryffindor and Hufflepuff,” he drawled. “It’s only teachers that can dock points from Houses, Malfoy,” said Ernie at once. “Yeah, we’re prefects too, remember?” snarled Ron. “I know prefects can’t dock points, Weasel King,” sneered Malfoy;
So... What's the deal? Plothole? Did Rowling ever tell anything about this?Can't be unseen?
An Easily Breakable Lock
From Redditor /u/Chgr:
In the first movie, on the very begining when Harry and Hermione are Hogwarts students just for a few weeks, they roam through Hogwarts, they come to the door behind which there is something valuable as they believe. But then, Harry sadly notices that the door is locked. So then a Hermione do a spell "Alohamora" and unlocks them. Why in the Earth would anyone, especially wise wizards leave anything valuable behind locked door as a security when anybody, even those who are students there just for few weeks, can just do freaking alohamora?Can't be unseen?