This book is important in many ways. Unlike so many books on Critical Thinking, especially those written by people involved in examining it as a subject, this doesn't reduce the subject to a slow, mechanical process in which there is no intellectual excitement. The book itself makes you think: even when you think an argument is increasingly wrapped up (like in the example of trying to reduce deaths among albatrosses), the author will come back and get you thinking again, and again.
The material on decision-making will be useful in so many contexts, including business and public organisations. Different approaches to decision-making are considered, but I particularly liked the emphasis on using evidence and asking questions of it. The compelling question `what does the evidence tell us?' should keep being asked by decision-makers. For example, is Singapore's very low murder rate the consequence of their high imprisonment rate or is it due to other factors?
The section on `how do we know what's relevant?' raises questions that other Critical Thinking books ignore. This is typical of what makes this book so good. It takes you places and gets you to think of questions and problems that other books don't. If you buy only one book on advanced Critical Thinking skills, buy this one. It'll change you.