I actually had a discussion about this last night. We came to the conclusion that you can't invalidate an argument solely because it might be biased. Otherwise you'd probably invalidate all arguments due to some bias found somewhere. We agreed you must take biased arguments with a grain of salt, recognize and assess bias, etc. but the presence of bias does not alone invalidate an argument. Even "scientific research" is biased, ask Kuhn.
Because you just mentioned the title and that's what popped up.
> I mean the currently bestselling:
That it is bestselling does not make it true and that particular author has a stench around him you can smell from a mile away. The last thing I'll do is send the cretin my $.
Ironically, and I'm saying this without having read the book as you already know, but I would not be surprised if for once the title actually accurately conveyed the contents of the book.
That one? You're joking, right?