The Goal is using a novel format to share with us the basic concept of Theory of Constrain (TOC). It’s a very interesting story. My gut feeling is TOC is not widely used due to its complexity, at least, as widely as MRP. Well, I can be wrong. Besides, it is more suitable for industries which require certain level of agility, with, e.g. constantly-changing demand, or too many options for production or transportation.
However, its basic concept refreshed my mind a little bit (from overwhelming influence of SAP); and help me back to the state of “stay foolish, stay hungry “. I still believe that those simple and basic concepts are the most powerful tools.