Even this isn't necessarily a good thing. Part of the value of a judge is having an empathetic element in the position of final arbiter. Decisions aren't always "GUILTY / NOT GUILTY"; they're often long-form essays discussing the merits of the case, the factors under consideration, the logic and reasoning behind the ultimate conclusion and so on.
Math is nice because it can be reduced to a symbolic language. We're not at the point where we can reduce human beings to symbols yet.