Notes: Philosophy of Agency - The Hartian Social Rule
Core Definition
A Hartian social rule (pioneered by legal philosopher H.L.A. Hart) is a collective social practice where a group accepts a specific pattern of conduct as a common, authoritative standard of behavior.
The Crucial Distinction
Habit: A mere regularity of behavior. If someone breaks the habit, there is no social pushback (e.g., a group of people who usually drink coffee at 9:00 AM).
Rule: A normative standard. Deviation triggers criticism, social pressure, and demands for compliance (e.g., standing when a judge enters a courtroom).
The Two Sides of a Hartian Rule
1. External Aspect: The observable regularity of the behavior across the group.
2. Internal Aspect: The critical reflective attitude. Group members actively accept the behavior as a binding standard, using normative language like ought, must, or wrong to justify compliance and critique deviations.
The Rule Hierarchy
Primary Rules: Rules that directly govern action, imposing duties or restrictions (e.g., No personal recording allowed in this auditorium).
Secondary Rules: Rules about the rules. They dictate how primary rules are created, changed, verified, or enforced. The most vital secondary rule is the Rule of Recognition, which sets the criteria for what counts as official, authoritative policy.
The Institutional Bridge
Michael Bratman uses the Hartian social rule to scale individual agency up to institutional structures:
Individual Intentions (BDI Model)
Direct coordination across time for one person.
Shared Intentions (Interpersonal)
Direct handshakes and cooperation between a few people.
Hartian Social Rules (Institutional Bridge)
A core group of officials share an internal attitude to accept secondary procedures. This anchors massive structures like universities or legal codes, allowing them to act as continuous, unified agents across decades.
Application to
To build a functional ecosystem where hundreds of autonomous AI agents interact without human oversight, engineers cannot just code individual agent goals. The system requires a shared framework of secondary Hartian social rules so the software agents can independently recognize, validate, and update each other's operational authorities.
