This book is a compilation of a number of essays and papers by Kuhn dealing with additional factors of change in the fields of science. As a historian of science he spent much of the book dealing with why the history of science has been treated like such an orphan not welcome in science departments and not welcome in departments of history. Although a great deal of additional information relative to understanding changes in science and fields of scientific exploration was presented, I found his other work, (Structure of Scientific Revolution) more meeting my needs and I found Barkers’ work on Paradigms much more practical. I do recommend this book but more for completeness and depth of understanding the other two works cited here.

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