Since we are all atoms and elements of largely known nature, it shouldn’t be very difficult even for an empirical study to predict future.
Some people understand these elements extremely well and can have insights into the different parallel realities that could exist in future.
Fortunetelling was probably words of wisdom from such people for ones seeking wisdom. The play, the stars , the mathematics was maybe just a way of unlocking the mystery.
Thank you Anandi for your words.