CONCEPT
Formal Rules and Informal Norms
North's analytical distinction between the explicit rules that can be legislated overnight and the tacit conventions that require generations to evolve — an asymmetry that determines which institutional disruptions are manageable and which produce sustained crisis.
North insisted that the distinction
between formal rules and informal norms was not taxonomic but analytical. Formal
rules can be changed through deliberate action — a legislature passes a statute, a regulator issues a rule, a court hands down a decision. Informal norms cannot. They are products of long processes of cultural evolution, transmitted through families and communities and professional cultures, enforced by social approval and sanction rather than by courts. The relationship between the two is one of the most consequential dynamics in institutional economics. Formal rules operate within a matrix of informal norms. A formal prohibition on bribery is effective where informal norms support public service; it is a dead letter where informal norms expect public officials to supplement their income. The AI transition is disrupting both simultaneously — but at radically different speeds. Formal rules evolve in years. Informal norms evolve in decades. The technology evolves in months. The widening gap is the deepest structural