Mathematicians try to build a universal moral rulebook for fairness

This paper uses math to build a formal system for judging fairness in how things are distributed. It aims to create a single rulebook for ethical decisions, like how to share resources or deal with difficult choices.

For decades, discussions about fairness and ethics have relied on informal arguments and examples. This paper tries to turn those arguments into precise mathematical formulas. If successful, it could provide a common language for economists, policymakers, and AI developers to design systems that are provably fair.