The primary alternate hypothesis—that Hermione was transfigured to be his glasses—also requires there to be a transfigured object in his room that no one notices. It’s not a contradiction (since he would have the real ring and the Hermione ring, and wear the real one to visiting Dumbledore).
The primary alternate hypothesis—that Hermione was transfigured to be his glasses—also requires there to be a transfigured object in his room that no one notices. It’s not a contradiction (since he would have the real ring and the Hermione ring, and wear the real one to visiting Dumbledore).