text: A second book written by Paul Polak and Mal Warwick that will officially come out on September 9, 2013. The key to this book is what Paul Polak and Mal Warwick call Zero-Based Design: starting from scratch to create innovative products and services tailored for the very poor, armed with a thorough understanding of what they really want and need and driven by what they call “the ruthless pursuit of affordability.”Polak has been doing this work for years, and Warwick has extensive experience in both business and philanthropy.