Science started in the middle. Visions of the wise, and "revelations" from "rapid-eye-movement" sleep, when the mind is released from beliefs we think we know, were passed on and repeated indefinitely to become dogma. A gene is a self-replicating organic complex. A meme is a self-replicating concept, which likewise may propagate through generations.
Astrology starts with the time and date of birth. Calculations establish the relative positions of the planets and the zodiac constellations. So far so good.