By definition that would be a rather difficult thing to falsify. I tend to find the answers in my own academic fields (philosophy and psychology) to be accurate and impressive.

Admittedly that rarely requires asking for direct passages from texts: usually more the refinement of basic principles, application of such principles, or creating new theories by combining previous ones.

When I ask for philosophical quotations, it hasn't produced an error I've observed yet: presumably it often combs the many quotation websites for such things.

Can you give me an example of a question I can ask it where it will misquote and/or rewrite something?

I am not an expert in Magic The Gathering but perhaps I can somehow see what you mean.