In this book, its author, Dr. Mustafa Mahmoud, tries in his style known as ease and extreme logic in understanding the theory of relativity of the physicist Albert Einstein so that it suits the understanding and perception of the general public, and in a strong objection to limiting information to a few scientists under the pretext of depth and specialization, which may lead to the isolation of science, supporting in his book what Einstein himself called for to spread science among people, Einstein hated scientific fortune-telling and fabrication of mystery, claim, and magnification, and he used to say that the truth Never mind.