As a nuclear engineering graduate student, I expected to understand most of what was discussed, but the book is highly technical and really requires a further understanding of quantum mechanics. If you haven't had an introduction to modern physics course, or have equivalent knowledge, you won't be able to appreciate the philosophical points. With some knowledge, an understanding of the original philosophical considerations of quantum mechanics is gained by reading this book. Additionally, expect this book to take a very long time to read--I took more than four months to finish and I can usually read even technical things of comparable length in less than a week.
Finally, I like the portrait of Bohr that is presented in this book. Usually he is shown as extremely abstracted and highly intelligent, but largely as a caring person--more the human side. This book helped me understand the level of his genius without showing him as inhumanly scientific or emphasizing his assistance to other scientists during the WWII.