True fairness is justice: Everybody involved agrees that everybody involved has the best possible material outcome for themselves, even under permutations of pe

True fairness is justice: Everybody involved agrees that everybody involved has the best possible material outcome for themselves, even under permutations of perspective. Concretely, imagine some judge Judy who is judging some dispute between some Alice and Bob. The article explores how we can evaluate Judy for fairness. However, justice is when Judy, Alice, and Bob all agree on an outcome which none of the three would change, even if they were to be forced to swap bodies in some unrelated way after the outcome is assigned.