People think that there are 12
zodiac signs. These signs come from the sun traversing the
solar ecliptic. So, if you followed old Sol's path along the ecliptic, it would pass through
Taurus,
Gemini, and all of the other friendly constellations. Unfortunately, the ecliptic also passes through Ophicus for two weeks in December. In actuality, there should be 13 zodiac signs, but 13 was an unlucky number. Therefore, it was conveniently ignored.
Another item that causes problems with the zodiac/astrology equation is it was created thousands of years ago. Polaris, or our present day aptly-named North Star, was not the north star then. The star that was relatively fixed in 4500B.C. was Alpha Draconis, which also throws off all of the calculations. In the year 7500A.D., Alpha Cephi will be our 'north star'. Again, it was conveniently ignored.
Some folks truly believe in astrology, and I say that's a fine thing. While I don't believe in it (and find it mildly entertaining), if folks wish to believe in such a concept, it's a question of faith.