If a Feruchemist using an aluminum metalmind stored their identity to zero, then filled a coppermind with all of their knowledge, would another Feruchemist with an identity set to zero be able to access the first Feruchemist’s coppermind?
[Paraphrased] I’m not going to tell you a definite yes or no, this is something that needs to be saved for future books, but you are thinking along the correct lines about how identity works regarding Feruchemists.
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