and out of the ring. The number "2" of the equation means a duel between a coach and student, by means of which the coach gains authority in the eyes of his mentee. Graceffo emphasized that while Cus D’Amato was able to subordinate and "defeat" Mike Tyson, he did not damage his personality. In his words the book is meant to develop a non-compromised approach and mind-set. NY Fights journalist John Gatling notes that the view of Non-compromised Pendulum is somewhere in the middle between what Muhammed Ali thought of Cus – the devil and what Mike Tyson of him – the God. John considers the book to be an elaborate psychological course into Cus D’Amato's approach in training and developing a lifestyle of a true champion. Boxing historian, founder of Boxing Hall of Fame, Inc (Las Vegas, Nevada) Steve Lott reviewed the book stating that the piece is something which was never done in the history of boxing. In his words, Cus would be impressed that the author understood that 80% of boxing was mental and emotional, with the physical being a small part. However at same time Steve notes that the book is way above the level of average boxing readers and the concepts might be too advanced to comprehend. Martin González a trainer at United States Boxing Association praised the analysis of the technical elements of style and an approach in studying mental processes and psychology. According to Martin Gonzalez, he himself used the style of Cus D'Amato in training boxing fighters. The president of the National League of Professional Boxing of Ukraine, , generally praised the book. However, he is ready to argue with a fragment of the book where it is said that without the instinct of the killer a boxer will not become king in the ring. In contrast, he refers to the current boxers Vasily Lomachenko and Oleksandr Usyk, who in his opinion, do not possess the killer instinct. The journalist of The Ring Lee Groves, examining the structure of the book, also noted its depth. Sports Illustrated review by Kaelen Jones states that Non-compromised Pendulum serves as a short and concise testament of authors’ commitment to adequately portray Cus D’Amato. The review includes authors’ quotes and striking ideas of certain chapters of the book, saying that it is an unconventional read with myriad lessons throughout it. It also points out the fact