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The authors are not short on details and their recollection of personal experiences during their scientific endeavors makes the book most interesting. These authors are not merely reporting on what others are doing but rather reflecting on their own personal critical investigations and presenting their opinion on subsequent research endeavors. They have been observers and critics of the evolution of cosmological investigations for essentially their whole careers. Thus they have strong opinions which are expressed unambiguously. I would expect that some would disagree with their opinions but to me this clear expression of these opinions is refreshing. But to their credit these opinions are presented clearly as their opinions so that the reader can explore the issues and disagree to their hearts content.
As a non-physicist, I had read enough to understand that the abundance of the light elements was created according to the Big Bang theory during the primeval evolution of the universe. And further that the heavier elements up to iron were created in the heart of collapsing stars but had never quite understood why this was the case. The authors discussion and presentation of data on the binding energy of the elements made this reasonably understandable to me. I mention this because I want to emphasize how the authors present a broad overview of a very complex physics problem with clear discussions but in addition give sufficient data to support understanding by the layman. Thus this book is not an easy read for the layman but rather is a challenging and invigorating experience for the amateur physicist who loves to try to understand the universe we live in.
The book includes an expert review of most of the evolving developments in the field of cosmology since their seminal work in the late forties. They present a broad overview of the concept of inflation in the early universe and express their view that this remains an open question. For those interested in the "why" question, there is a brief chapter on the Anthropic Principle. But to me it seems clear that the authors are by far more interested in the "how" issues rather than the "why" issues.
This book is by far the best overview of this subject I have ever run across.
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