Why said that astrology is the official patent

From astrology is the official patent, and belongs to the official officer duties within the scope of things.It is believed that this period have relationship with astrology are Kings will be similar big man, which is astrology is not so popular one of the reasons why the augury and convinced.Astrology is generally used in estimation of state affairs, and human relations is not big, so just appeared in astrology is the official patent.