We mere muggles know that a lot of who we are has to do with how our brains develop. No two people will have identical brains. The brain is a physical part of the mind.
I can accept that if you polyjuice into somebody, your mind itself doesn't change, at least in the short term. But does the brain? If you polyjuice into somebody who has hyper-sensitive hearing, will your hearing change? If you are clumsy because of neurological problems, and you polyjuice into the body of somebody who doesn't have those problems, who is gifted physically - will your own ability to move alter while in that person's body?
Here's the pertinant question: If your brain also alters shape somewhat, and the chemicals within the brain as well (why not), then will you suffer lasting effects if you stay in somebody else's body too long?
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We mere muggles know that a lot of who we are has to do with how our brains develop. No two people will have identical brains. The brain is a physical part of the mind.
I can accept that if you polyjuice into somebody, your mind itself doesn't change, at least in the short term. But does the brain? If you polyjuice into somebody who has hyper-sensitive hearing, will your hearing change? If you are clumsy because of neurological problems, and you polyjuice into the body of somebody who doesn't have those problems, who is gifted physically - will your own ability to move alter while in that person's body?
Here's the pertinant question: If your brain also alters shape somewhat, and the chemicals within the brain as well (why not), then will you suffer lasting effects if you stay in somebody else's body too long?