QUOTE : Minerva drew unusual attention to herself on her very first evening, when she was revealed to be a Hatstall. After five and a half minutes, the Sorting Hat, which had been vacillating between the houses of Ravenclaw and Gryffindor, placed Minerva in the latter. (In later years, this circumstance was a subject of gentle humour between Minerva and her colleague Filius Flitwick, over whom the Sorting Hat suffered the same confusion, but reached the opposite conclusion. The two Heads of House were amused to think that they might, but for those crucial moments in their youths, have exchanged positions).