How the sciences connect. The four cardinal virtues sit at the center as the throughline. A gold link is a real dependency in the code; a gold-dashed link is partly derived, its structure proven but its exact mapping still doctrine; a cyan-dashed link is asserted, canon awaiting your derivation. Tap a node to trace it.
Courage, Wisdom, Temperance, Justice. Every science either measures them, is built to serve them, or maps its own structure onto them. They are the spine the whole engine turns on.