Despite the complex and extensive subject of the book is easy to understand even for beginners and easy to read (also in English). It is through practical examples the various aspects of the system 1 and system 2 (as well as the other concepts) are presented in a comprehensible and led me often find a teachable moment. Especially the first half of this book System 1 + 2 is very instructive and very interesting. Unfortunately for me the euphoria flattened in the second part of the book by varied repetition and behavior already described again-Erläuterns. For a star deduction. In sum a book should everyone read who wants to know why we (so many) bad decisions and of what we can influence us.