Interesting book, not a page-turner like The Goal (which many people can't put down once they've started it) - this one is more about exploring the psychology of the normal manger's mind. Sure we want to get to the root cause, but too often when we think we are there, we do not explore things any further, so we stop or compromise - unlike Goldratt who approaches business problems as a scientist, looking for all possible outcomes with their (re)actions and implications. The book seems to build on the Viable Vision work he was doing a few years ago (recommend reading "Achieving a Viable Vision: The Theory of Constraints Strategic Approach to Rapid Sustainable Growth" by Dr Lisa Lang for an overview if not already familiar). This work challenged us to think bigger, rather than aiming for modest profits (eg 10% growth), aiming for massive increases then breaking down all those barriers 'we' put up - i.e. the reasons why we think it would 'never work'. The book is written as a series of conversations between Eli and his daughter Efrat, how much are Eli's words and how much are Efrat's does not matter - she acts as a sounding board on the readers behalf .... when Eli mentions things like 'abstract entities', 'circular logic', 'inherent simplicity' etc, Efrat (an organizational psychologist herself) asks the questions we would ask if we were there talking to him, asking him to clarify his thinking and provide examples - which he does, case studies mentioned include a textile / apparel manufacturer, a fresh baked bread operation, and an FMCG company having the huge distribution network in India to contend with. It contains moments of humanity, like when Eli gets distracted by his grandchildren to play, or when he stops to re-light his pipe or have a coffee. Worth reading, because like most of his work, I'm sure many readers will have a few of those eureka moments when we think to ourselves "of course, it's so obvious now, but I'd never really thought about it like that before.