Solid scientific foundation for his claims.
I love how he opens up with how reporters and politicians reacted to his book with hyperbole after hyperbole on how terrible and wrong it is, when it is evident that most of them never read the book since it wasn't even available yet.
It just shows the sad state of journalism where plagiarism is rampant, actual research rare. It also shows that politicians who in Europe are supposed to know better than regular citizens also known as commoners don't even bother to form their own opinion, but rather just parrot whatever the party and mainstream media is screaming.
It is a dry read.. And if German isn't your native language it can be a bit of a challenge. Why isn't there an English version of this book anyway?