Suggest me non-fiction books that are untrue/ridiculous.

I was talking to my friend about wanting to start reading more, and they mentioned they found a book on diagnosing ailments using clairvoyance. I found that intriguing. So I'm looking for books that feature crackpot theories, wholly flawed premises, and/or insane reasoning. The more unintelligible and complex, the better. by Dependent-Track208