Jeffrey Pfeffer is an exceptional management author, who has written twelve great books, among which The Knowing-Doing Gap, Hidden Value, The Human Equation, and Hard Facts. His new book, What Were They Thinking, is based on a series of columns Pfeffer wrote for the magazine Business 2.0. In it, he covers a wide range of topics, from people centered management strategies to creating effective workplaces, using power strategies, thinking differently about success, executive pay and corporate ethics. The great thing in all Pfeffers writing is that whatever he says is so well argued and facts-based. If you're familiar with his earlier books, you will surely recognize many of the points he's making in this book. At the same time, however, there is a certain freshness in this book, maybe due to the fact that it is based on columns. Another reason is there are new examples from the corporate world, and there are many new research references. Friend and colleague of Pfeffer, Bob Sutton, has said this about him: "And no matter how strongly you disagree with him, he has this annoying habit of basing his arguments on the best theory and evidence in peer-reviewed academic publications. Plus when he writes about an unstudied topic, his logic is often so compelling that refuting his arguments is extremely difficult." When reading this book (and practically anything else he has written) you'll find it easy to agree with Sutton: it is very hard to disagree with Pfeffer once you follow his reasoning and evidence. Some of the chapters I liked best in this book were: The courage to rise above, Dare to be different, More mister Nice guy, Curbing the Urge to Merge, In praise of organized labor, Stopping corporate misdeeds. A great book. I think every student of organizational effectiveness should read it.