Vedic astrology like any other branch of vedic knowledge is aimed at enhancing human welfare by a meliorating suffererings.
Astrology is like any other science how ever its practice would always remain an art as the parameters of man's environment and times lead to different interpretation in different parts of the world.
The principles of Vedic Astrology are intricate and yet simple. At times during initial intrepretation they may seem to be contradictory but really they are not, and at this stage, the teacher(the Guru) plays a key role and no book can replace him.
On earth Vedic astrology as many people know, has been perfected & interpreted by Rishi's like Maharishi Parashara, Maharishi Agsthya, Maharishi Agsthya , Maharishi Bhrigu, Varahamihira, Sage and many great saints & holy purposes.