I don't understand why everyone is raving about this book! Yes it is fine to make split second gut decisions BUTas MG points out in the book each example is due to the person's specialization in the field requiring nearly two decades! This book says you should thin -slice ONLY after years of analyzing the subject matter! Big Deal.
Well, in software engineering it often happens that a design just "doesn't feel good" to experts. I saw many cases where this was judged insufficient to change the design: managers were requiring to "prove with data" that the design is not right, which of course was impossible.
like anything else in life, you take it for what it is. It's a book about our instincts and provides examples and a compelling case of trusting our instincts. And more importantly provides a platform of discussion - are our instincts more powerful and more successful in judging how a product will succeed, an idea will fail or should we rely more on numbers/statistics? An absolute must-read!