[whoshallsucceed]

Justice is not a binary thing. For example, given a same crime committed by 2+ different persons, punishment can't be the same because of the personnalities, the reasons that led each one to do what they did.

I've read that for 20 to 30 years, the US tried to make justice somewhat automated by providing some kind of grids the judges had to stick to. They stopped in 2005 because it was really not working.

You should read "Practical Wisdom" for a starter. There is more in this book than justice but everything is worth reading so you won't waste your time :)