Overrated book. Despite of being interesting at first with the new angle to explain thing, it then shows the opinions of of the author more than telling facts. The author criticized the humanity, the revolution of agriculture because he thought they were bad. Which shouldn't exists in any book that have the word "history".
And most of all, where are the studies of what the author has claimed? The more you read, the more uncomfortable you feel. It is really hard to finish it.
If you're looking for a book that speak up another opinion, this is the one. If you want to read about history, stay away from it.