Quantifying justice

While I've often said that morality is a function of individual preferences and cultural influences (which it is), there are certainly some things associated with ethics which are fairly objective. One of these is justice. Justice is just about universally considered to be "right". Justice can be quantifying: when a being receives a reward (penalty) proportional to the benefits (harms) they've created, the result is just. In our society, many people are not handled justly, and that's something to be concerned about.