What are some times Gandalf as been completely wrong?
In The Hobbit and Lord of the Rings, when was Gandalf proven to be factually wrong?
The Lord of the Rings (creative franchise): Why did Saruman not join forces with Gandalf? Could Dumbledore defeat Gandalf? Should the Hobbit be considered a canonical Tolkien work? Did Gandalf know Bilbo had the One Ring? What powers does Gandalf actually have? Versus: Who would win in a duel between Gandalf and Dumbledore? In The Hobbit, why was Gandalf and other people so keen on taking back Erebor but not Moria? Was The Hobbit written before The Lord of the Rings? If so, should it be read before TLotR? Why does Gandalf the White choose to fight with his sword, instead of casting spells? What is the worst change Peter Jackson made to Tolkien's plot in LOTR? Who would win in a fight: Dumbledore or Gandalf? Why do orcs in The Hobbit look different than in The Lord of the Rings? Why are the Nazgul depicted as ghostly spirits in The Hobbit, but appear more substantial in The Lord of the Rings? How old is Gandalf? Does Gandalf ever show fear? What powers does Gandalf possess? Why the Lord of the Rings series is considered good? Lev Grossman: Who would win in a fight between Gandalf and Dumbledore? Why do some people think that Lord of the Rings is satanic? How was Gandalf imprisoned at the end of The Hobbit: The Desolution of Smaug and the beginning of The Hobbit: The Battle of the Five Armies? What are the connections between "The Hobbit" and "The Lord Of The Rings" other than the same author? If Gandalf defended against all nine Nazgûl at Weathertop, why does the Witch King believe he can beat him at Minas Tirith? Why did Saruman not join Gandalf? Is the Bible historically accurate? Why is Harry Potter and the Cursed Child not in the form of a book? What does Gandalf say when he falls? Why does he say that? How does The Elder Scrolls series compare to the ﻿Lord of the Rings? Will the Lord of the Rings ever be remade? How does Gandalf power his spells in LOTR? What are some inconsistencies between The Cursed Child and the main Harry Potter books?