4. It was Harry’s fault that the Dursleys were so mean to him.
This theory states that the Dursleys treated Harry so terribly because they were exposed to the same sinister influence of the Horcrux that Harry was. Here are some thoughts to consider:
A Horcrux may be the darkest magic artifact, only achievable by murdering someone. It’s the sort of magic only sinister witches and wizards engage in. Whether they’re objects or people, the consequences they have on their surroundings, are the same: They make others hostile, intimidating, and even enable them to control others thoughts.
An example of this is Ron. Just remember how he abandoned Harry and Hermione in the woods after wearing the locket for only a few days. Harry was one of Voldemort’s 7 Horcruxes. If Ron left his friends after a few days, imagine how bitter and awful the Dursleys must’ve been after living more than a decade with a Horcrux.
5. We knew about Dumbledore’s death since the third book: Professor Trelawney predicted it.
In The Prisoner of Azkaban, Professor Trelawney is hesitant about sitting down to enjoy a Christmas dinner with other students and professors because she saw 12 people seated at the table. She explained that when 13 people dine together, the first person to rise will be the first of them to die.
But there were already 13 people dining at the table. No one noticed Peter Pettigrew disguised as Scabbers the rat, hiding inside of Ron’s pocket. Albus Dumbledore was the first of them to rise to welcome Professor Trelawney, and he was the first of the party to die.
6. Hogwarts was, in reality, an insane asylum.
Some believe that the Harry Potter world is so supernatural, that the explanation for it is that it was all imagined by the characters. There were all sorts of imagined things like talking paintings, ghosts, and characters hearing voices or talking to animals. But, apart from all the magic, here are some clues on why Hogwarts may have been an insane asylum:
In The Philosopher’s Stone, Harry becomes obsessed with the Mirror of Erised and manages to sit in front of it while he’s eating every night. One of these nights, Dumbledore warns him that “men have wasted away before it, entranced by what they have seen, or been driven mad, not knowing if what it shows is real or even possible.”
The books portray many kids acting aggressively, even murderously, in the case of Draco. This is something only seen in children who undergo intense disorders.
The moon has long been considered a symbol of lunacy. Lupin is a werewolf who undergoes his transformation every full moon. Harry is also very close to him, for which we can associate this pair with the moon and therefore, with insanity.
The most compelling evidence might be in one line spoken by Dumbledore. When Harry “dies” and meets the professor at Kings Cross, he asks his mentor: “Tell me one last thing. Is this real? Or has this been happening inside my head?” And Dumbledore responds: “Of course it is happening inside your head, Harry, but why on earth should that mean it is not real?”