Everyone else is normal people. Harry is a wizard.
Forumghost's reply answers this better than I could.
And yes, if you are in an abusive relationship and you know it and you allow it, part of the wrong is with you. The only exception to this is if the abusive relationship is between a parent and a child or something like that, with the parent aka the one with the greater power as the one who is dishing out the abuse. When the abusive relationship is with people of equal status, there is a problem with both parties.
I will do you the courtesy of assuming you don't know how abusive relationships work, because otherwise this reflects rather negatively on you as a person.
If anything, the power balance between Harry and Murphy leans more on Harry. Harry is the one with greater power and knowledge.
Murphy is an officer of the law with the ability to arrest Harry. She is also his primary source of income, without which he will starve. Harry's ability to exercise power over Murphy is sharply limited, because if he does exercise it, it means that people will be hurt or die. Murphy's power over Harry does not suffer from the same limitation.
If he is the one who kept being manipulated, there is something wrong right there.
This is what I meant when I said you are not comprehending what I've posted. I have
never claimed that Harry has kept being manipulated by Murphy throughout the course of the books. I have said that he was manipulated by Murphy in Storm Front (which he admits in the beginning) and is badly treated and assaulted in Fool Moon. Then, at the end of Fool Moon, Murphy realizes how much she screwed up and
stops manipulating and treating Harry badly. Then, during Cold Days, when Murphy has some reason not to trust Harry and when Harry is emotionally extremely vulnerable, she starts manipulating Harry again. I have also stated that my interpretation of Cold Days is not what Jim intended--I simply cannot manage to read it differently, and I have tried.
It is not that I don't understand you. I just do not accept the reasoning. A wizard of Harry's caliber should not have made such a low level mistake, even under those circumstances and issues, not after 6 years.
Harry didn't flub a magic spell! I don't see what him being a wizard has to do with anything.
If he is that ggullable, Mab would have turn him into an obedient puppet by now. Or do you think Mab is less ccapable than Murphy.
I think that Harry is specifically vulnerable to manipulation from those he cares about, in a way he is vulnerable to no one else. It's a weak point in his defenses. Obviously, he does not care at all about Mab.