Moral Luck, Free Will, and the Justice System

Prompt: Most of the world's justice systems presuppose free will, but is that right?

While the argument of whether or not humans truly have free will has been raging on for centuries with no definitive answer in sight, it is true that much of our society functions on the assumption that we are each in control of our own actions and therefore responsible for their consequences. If this could be proven partially untrue, or even completely false, would this require us to change how we punish crime? This discussion relies heavily on the essay Moral Luck by Thomas Nagel and should be read first.