I read this volume in a weekend. It's a pleasant read (though it wanes a bit in the final chapters). It *does* fill, to a modest extent, a niche typically only addressed by relevant journals, conferences, online dialogues, etc. Despite the authors' apparent experience in applied research and design (in the business world, not the classroom), ultimately, IMHO, the book fails to correctly address (nor reflect experience with) the nitty-gritty, messy nature of designing products in the real-world (or the environs within which they operate). It also fails to seriously address anything about human experience, and how the most successful products on the market, and in history (e.g., Da Vinci, Ben Franklin, Edison, Robert Jarvik), almost always "rose from the field research and observation" ashes. Innovation breakthroughs do not occur by assembling a group of smart people, sitting around a table. Product breakthroughs occur when these smart people leave the office and learn from current and potential customers. Perhaps I'm mistaken and if I took a class or workshop with these fellows, I'd learn otherwise. Positive is that they propose a couple of simple strategic planning / conceptual models. However, I would have much rather read (and discussed) such models via a 10-page journal article or 2-hour conference break-out session. These models are insufficient to build an entire book upon. To their credit, there really isn't any contemporary book that takes this challenge on (and likewise eeks by, or otherwise), though I might suggest Kelley's "Art of Innovation," and even foundational readings such as Pine & Gilmore ("Markets of One," etc.), an occasional reprint from the IDSA Journal "Innovation", or even classic Peter Drucker or Tom Peters (who in their own unique ways address the all-important business and human context & culture from which product innovation can and will emerge).