Astrology
I always thought of astrology as pure superstition and pastime. Then at one point I read about five different types of Taurus, with ascendant Gemini (my own), Leo, Virgo, Libra and Sagittarius. And each description matched with surprising accuracy to me and the four people present.
Then I forgot about the topic for a long time, but a few days ago a woman who is very close to me influenced me to download this new app and I have to admit I was shocked once more by its accuracy.