41. It took J.K Rowling 17 years to publish all of the books.
42. Muggles can't see Hogwarts because of the protective enchantments around it, and if they came anywhere near it, all they would see is ruins. They would also walk away remembering some sort of appointment they had to do.
But we'll find it.
43. Many people often forget that, before Harry's birthday, it's Neville's.
44. Hagrid was like Harry's father figure before and after Sirius died.
45. Any electronic devices would explode in Hogwarts.