Are You Going to Go to Heaven or Hell?

In the Middle Ages, people like St. Thomas Aquinas said astrologers could genuinely predict some things because of the influence of the stars on things like the weather. What you could not do was use astrology to predict the fate of individuals because they've got free will. With the scientific revolution, we introduced a new methodology where we would more rigorously test predictions. And if you rigorously test astrological predictions, they don't have that greatest success rate.