Should I buy this book (details inside)

The book in question

On one hand, the concept of the book is really interesting, and the author provides maps and detailed research. I really like it when someone talks about something in a different perspective. But on the other hand, because the topic is rather controversial, there is the possibility that the author somehow misinterpreted his data and comes up with the wrong conclusions for his research in the book. This could mean I would then believe in the wrong things. I did read some critical reviews on Amazon. While no one is saying the author provides false information, people think he is kind of too proud of writing about something different, and it shows in his writing.

And it’s not like I have a lot of money to spare either. I want to really make sure my money is going into a good place, because I can’t afford buying a book just to later find out I have been fed with false information.

If you have read the book at least a little bit of it, do you think it’s a good book? And if you haven’t heard about this book before, do you think you would buy it according to the overall look of it and the reviews?