Frankly, I think that there is no way to use the zodiac signs to draw a conclusion about the compatibility between two people. Zodiac signs, astrology, or tarot cards mean zilch when it comes to taking important decisions. However, for the people who strongly believe in astrology-based compatibility predictions, here's explaining to you about the intricacies of such a belief. If the predictions based on the zodiac signs were true, we could've had people hiring employees with sun signs that said they were hardworking and disciplined. Can you imagine asking people which zodiac sign they fell under, during a professional interview? Zodiac signs give generalized descriptions about people who belong to a particular sign. For example, people whose zodiac sign is say, Leo, are supposed to be aggressive, however I've come across many Leos who are anything but aggressive. It obviously takes more than one's zodiac compatibility to get along with other people. The kind of educational and cultural background of a person, areas of interest, professional aspects, upbringing, and life experiences, influences how he / she gets along with another. Cancer and Libra are supposed to be incompatible signs. My sun sign is Cancer and my best friend is a Libra; we understand each other and get along really well. Cancer and Aquarius are an unsuitable match, but I'm married to one after years of being in a relationship. Although our zodiac compatibility is weak, the years we have spent in enriching and enjoying our beautiful relationship has convinced me that zodiac-based compatibility predictions shouldn't be taken seriously.