"Brilliant," said Hermione, "this isn't magic, its logic, a puzzle. The greatest wizards haven't got an ounce of logic in them, not including dumbledore, of course".
"You know what," said Harry, who was looking thoughtful, "that actually explains a lot"
"Really," asked Hermione, "what does it explain?"
Harry blinked. "It's fairly obvious, Hermione, I'm astounded you haven't picked it up. Dumbledore's the only wizard powerful wizard who can be counted on to crack this riddle because he's been obliviating every magical being with logic."
"Don't be silly harry, dumbledore wouldn't do that."
"Okay," said Harry, shrugging, "let's go back to completing this dangerous yet easy scavenger hunt."
"lets,"