I guess whole houses/signs is a prerequisite to traditional astrology
Hey the Greeks and the Arabs used it
Unfortunately this is quite incorrect! IT SHOULD BE CORRECT, but the fact is that whole sign was forgotten after the late 6th century, and except for Abu'Mashar, was not followed during the Arabic transitional period: they mostly used the quadrant Alchabitius house system, while the Greco-Roman practioners at the very end of the classical period were using the quadrant Porphyry house system. Even advanced astrology authors as late as the 1970's, did not know of whole sign-it was not re-discovered until the late 1980's in academic circles, and really did not enter (or should I say, re-enter) the astrological consciousness, until the mid-1990's. Whole sign IS STILL CONSIDERED QUESTIONABLE AMONG THE GREAT MAJORITY OF CONTEMPORARY TRADITIONAL ASTROLOGERS, although movement toward the whole sign format is slowly gaining ground among our traditionalist friends...