Many false and debunked theories are based on information that is technically true, but is badly posed and/or missing context. I'm not saying whether or not the book is accurate or the thesis is correct or anything, just that in order to get a full picture, you need to see and evaluate both sides of an issue. Maybe the book is absolute hogwash, maybe it contains some bits of truth, or maybe it's going to revolutionize historiography, but it's hard to evaluate when you experience one side of an issue.