The book presents a new research method, endorsed by the best universities of the world, in which the disciplines of Economics, Sociology, Philosophy and Psychology converge; with one purpose: to place man at the center of the socially transforming processes. These pages also contain what became an indispensable tool and script in the Rectification Process that took place in Cuba between 1975 and 1985. We are in the presence of an essential text, which invites us to enhance critical thinking, to investigate, to question the eternal truths. It invites us not to seek unchanged answers, without variations, but to know how to navigate in this ever-changing world in which we live.