Astrology is a deterministic and it is given to man to change the course of events to avert the misery, agony and disaster threatened by evil influences of certain inauspicious combinations or dispositions of planets by taking appropriate remedial measures in time. This approach is quite scientific and is in accordance with the modern time of thinking. Man is no doubt, a creature of destiny but he is not entirely or absolutely its slave. Man has some freedom of will and action also. If man has no such freedom how can he overcome his karma and attain salvation or how will his soul merge with universal soul.
Thus it should be accepted that there is no place for fatalism in astrology. Fate and free will are two blades of a scissor and we still do not know which blades operate in cutting paper. It is man's supreme duty to do his mite irrespective of result like a Nishkama Karmayogi. It is true that error of judgment creep in when we are destined.
Miscalculations occur and our reasoning faculty becomes inoperative and ineffective. The most important utility of astrology is to forewarn man to enable to forearm himself to face troubles and calamities and to take steps in accordance with remedial principles of astrology to overcome or at least minimize the evil effects expected. To illustrate, if rain is inevitable and we cannot escape from it or avert it, either we don't go out take steps to avoid getting wet by the use of a rain-coat or an umbrella. This is the precise scope and function of remedial measures in astrology.