Obliviate não pode destruir uma Horcrux porque a Horcrux pode ser destruída apenas por algo que não permite que a Horcrux se conserte.
“It doesn’t have to be a basilisk fang,” said Hermione patiently. “It has to be something so destructive that the Horcrux can’t repair itself. Basilisk venom only has one antidote, and it’s incredibly rare—”
Harry Potter and the Deathly Hallows, Chapter 6, The Ghoul In Pajamas
Cérebro cientificamente falando armazena todas as memórias, mas baseado em Harry Potter e a Câmara Secreta, uma alma também possui memórias.
I AM LORD VOLDEMORT
“You see?” he whispered. “It was a name I was already using at Hogwarts, to my most intimate friends only, of course. You think I was going to use my filthy Muggle father’s name forever? I, in whose veins runs the blood of Salazar Slytherin himself, through my mother’s side? I, keep the name of a foul, common Muggle, who abandoned me even before I was born, just because he found out his wife was a witch? No, Harry — I fashioned myself a new name, a name I knew wizards everywhere would one day fear to speak, when I had become the greatest sorcerer in the world!”
Harry Potter and the Chamber of Secrets, Chapter 17, The Heir of Slytherin
Através dos livros, os encantos da memória são usados em humanos, mas não em outras coisas. Portanto, é difícil prever o que aconteceria ao diário de Riddle ou à pensieve. Mas você deve lembrar que o charme da memória não exclui (destrói) uma memória, ela apaga uma memória, mas magos poderosos podem quebrar o feitiço.
He tortured her until he broke through the Memory Charm my father had placed upon her. She told him I had escaped from Azkaban. She told him my father kept me imprisoned to prevent me from seeking my master. And so my master knew that I was still his faithful servant - perhaps the most faithful of all.
Harry Potter and the Goblet of Fire, Chapter 35, Veritaserum
Agora sabemos o seguinte:
- O Horcrux pode se reparar
- Oblivia como oculta / apaga a memória
- Voldemort era um mago poderoso que consegue quebrar os encantos da memória
Mesmo que o feitiço funcionasse no Horcrux, o Horcrux poderia se recuperar e recuperar a memória.
Quanto a pense, não posso arriscar um palpite.