This book has had the greatest impact on my life and business thinking. It's a masterpiece as it tells you exactly what you've been doing wrong and how to fix it with a system-based thinking that can turn your garage company into a real business.
- Andy

This book (and all its variations) has had wider application than any business book I can recall. It's principles are the forerunners of the "experience" oriented business models and easier to understand. I recommend it not only to entrepreneurs but to managers.
- Kevin Troy Darling