Astrology.
Most of us are aware that "Libra: You should feel as though you're making headway over a previously tricky situation. However, romance might be hard work today!" is complete and utter bullshit. (If you weren't aware, you better hurry because the last rainbow back to Brigadoon is leaving in ten minutes.)
But before we get too snotty about primitive people who believed the stars foretold important events, we should probably stop and consider that THEY DID. The stars knew when the animals were going to be moving. They knew when it was going to get cold and all the plants would die. Those are some seriously important events. If you're a hunter/gatherer, that's about as important as it gets.
Of course they didn't really predict the assassination of one hairless ape called Caesar by another called Brutus, that was the work of other hairless apes related to Caesar making a calculated effort to make particular human events and the rise and fall particular humans seem as important as the animals moving and the winter coming was to their ancestors. But if we look beyond the silliness ("Leo: Danger today. Don't breathe!") and understand how the idea came about in the first place, IT MAKES SENSE.
Consider the much maligned double standard. Throughout the centuries, men, married and not, could shag anything that moved and no one considered it a blemish on their character, while any woman not reaching her wedding night a virgin and not remaining unquestionably faithful to her husband was voted off the island.
Why? No, not because men are shits, because we can ALL SEE where the baby comes out. There is no question who the mother is. The father, not so much. And when the kid is going to inherit the farm or the kingdom, that's kind of IMPORTANT so you want to select a bride accordingly.
Understand how the ideas came about in the first place, it's fun.
