Along those lines, did you know that between the time astrological charts were first drawn up (in ancient Sumuria?? Mesopotamia?? ) that the zodiac alignments have shifted over about one full "house", so that when someone is getting their horoscope as a Leo, for example, they're in reality getting a chart from the next sign in the sequence, whatever that may be.
Additionally, way back then, they didn't know that all those stars in the heavens were in varying distances away from the earth in ranges unimaginable, they thought that they were all equidistant from the earth and so all exerted an equal amount of influence on any individual. That's why when people are told that this planet is influencing them or that one is, the concept of percentage of its influence really doesn't come up. Then they'd have to answer why it is one planet a zillion miles away exerts the same influence as another planet that's 100,000 zillion miles away, or how could something that isn't there anymore or hasn't even existed for a trillion million centuries have any influence at all.
Yet, some people swear by it and even trade by it. And somehow, I manage to get by without it.