I have to ask a question why is it whenever someone puts Harry into Ravenclaw that part of the password or sole the password is always Riddle? I mean just because the children are intelligent and my like to learn does not mean that they can answer a riddle look at Einstien he could not do basic math yet he created a nuclear bomb. So by making it a riddle is mean and cruel because like I said smart and intelligent does not mean they can answer a Riddle and they would get locked out at night.