Lon Fuller famously argued that for a legal system to command fidelity, it must abide by certain principles of legality. If a government consistently violates these principles, it ceases to be a true system of law and loses its claim to the citizens' fidelity. These principles include making sure laws are: General and publicly known. Clear and understandable.

As courts use algorithmic risk assessments and governments deploy automated decision-making, new fidelity questions arise. Can an algorithm be faithful to law? Only if it incorporates legal values like due process, explanation, and appeal. But algorithms do not possess intentional fidelity—they follow code. The human operator must ensure that automation does not sacrifice the reflective, interpretive loyalty that defines genuine legal fidelity.