Organizations live or die as systems not processes. Their success or failure is a function of how well the different component processes interact with one another. Real quality improvement isn't possible without the knowledge that comes from an understanding of the theory of knowledge, knowledge of variation, an understanding of psychology, and appreciation for systems. Goldratt's Theory of Constraints addresses best-selling author Eli Goldratt's unique approach to dramatically improving corporate performance, found throughout his books, The Goal (North River, 1992) and It's Not Luck (North River, 1994). This book thoroughly explains the theory of constraints, as well as detailing for the reader exactly how to problem solve using TOC.