Geometry because bitcoiners will inherent the Earth and land will be divided among them. Pythagoras learned the 3-4-5 triangle and more from the Ancient Egyptians. Back then the Nile used to mess with their borders from time to time and order must have been restored among the survivors. If you were not from the priest class to know in advance when the flood was happening, at least you knew how not to be scammed afterwards.
Algebra because counting the sats it's extremely important. However, never count your money while at the poker table (Kenny Rogers Wisdom)!