The review suggests that harmonics could throw a new light on such questions, but concludes that "what John Addey wrote is only the seed. The theory of harmonics in astrology needs more research and development in order to see how can be better applied in practice. Unfortunately it didn't made much progress since 1976". Critique of traditional astrology Addey's view was that constructs such as the twelvefold zodiac and house systems were unable to evaluate many of the effects of cosmic periods. Twelvefold systems allow patterns of 2, 3, 4, 6 and 12 to be easily analyzed, but not cycles of 5, 7, 8, 9, 10, ll or greater than 12. The tools of astrology would have to be improved. He wrote, "We are all engaged upon the building of a science – a science which of course has practical application as an art. But what are the 'stones' with which this Science is to be built? This is an important question, for before any science can be truly unfolded, so as to realize its full potentialities, it must first be reduced to its fundamental concepts". These fundamental concepts, he thought, were at their simplest the qualities of number manifesting in time. The search for some way of understanding these lead to the formulation of his theory of harmonics. His harmonic techniques presented a far more subtle and refined way of studying the complex pattern of the numerous cycles that make up the world in which we live. It broke out of the limitations of the twelvefold system of astrology. The practical development of harmonics was facilitated by Addey's use of computers. Nevertheless, the initial vision of a basis for a rational astrology arose from a vantage point of Platonic and Pythagorean contemplation. For Addey, the value of astrology was as a way of seeing the great order of time as expressive of eternal forms and numbers. The value of the natal chart was that it was, in his words, "a diagram of the soul's contract with time and space"[9]. He was influenced by Plato's myth of Er described in The Republic, in which Plato suggests that the soul continually incarnates having made a positive choice to take on the opportunities and challenges of a particular terrestrial life, lived at a particular time, in a particular place. Cited research Addey's astrological research methods have been cited in mainstream publications. One