Obliviation of New York, and in general

Obliviation of New York, and in general - New Your City street with vast busy road between contemporary typical buildings on clear day

In the first Fantastic Beasts film, the entire city if New York is obliviated with a rain storm to wipe the memories of all Muggles who were witness to the events that nearly destroyed the city.

Later, in The Crimes of Grindlewald, we learn that Jacob didn't have his memories erased because it only erased bad or unpleasant memories, of which Jacob appat had none from the events in New York.

How exactly does obliviating someone work? This detail about it only eliminating bad memories would seem to indicate that Hermione using the spell on her parents may not have taken, right? So are there different ways to cast the spell, or are there different kinds of obliviations? If not, then wouldn't the spell been ineffective on Hermione's parents unless any memories they had of here were actually unpleasant?

Best Answer

This is because the Swooping Evil's venom was used in this particular Oblivation event, not the "Obliviate" spell. Swooping Evil venom only erases bad memories, Obliviate erases any memories the caster wants to, right up to almost completely wiping their memories like what happening to Lockhart in Chamber of Secrets.

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Can Hermione reverse the Obliviate spell?

Lockhart's memory loss is permanent, but the Memory Charm doesn't necessarily have to be. After Voldemort's death, Hermione is able to lift the spell on her parents.

Why does Hermione use the Obliviate spell?

She had to obliviate them because she didn't want them to get killed during the war, and made them want to move to Australia and have new identities instead of being Grangers. She was powerful enough to reverse any charm she put on them.

What is the memory spell in Harry Potter?

Obliviate is a spell used to erase the partial or complete memory of someone.

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