Eli Goldratt is known by millions of readers worldwide as a scientist, educator and business guru. His Theory of Constraints (TOC) is taught at business schools and MBA programs around the globe. In this book, through a conversation with his daughter Efrat, he explains to her and the reader his fundamental system of beliefs in an engaging dialogue that brings the theory to life. This revised edition includes Efrat's Notes - these notes and logical maps are helpful tools that assist in visualizing and implementing the thoughts and ideas expressed throughout this book.