Policy Ecosystems

After this lesson, the reader should understand:

• 01Model dependencies between artifacts of different issuers.
• 02Describe the role of a registry and its trust assumptions.
• 03Anticipate the failure modes of a dependency graph.

An upstream definition changes

A standards body amends a definition twelve artifacts depend on. What happens next?

In a document world, nothing happens for months and then something breaks. In an ecosystem with declared dependencies, the change is detected at issuance, impact analysis names the twelve dependants and the decisions they govern, and each downstream authority holder chooses to adopt, pin, or override — as a recorded act, with a date.

• Should downstream adoption of an upstream change be automatic?
• Who operates a registry, and what does trusting it require?
• What is the equivalent of a deprecation policy for authority?

Draw a dependency graph.

1. 01Pick one artifact and list what it depends on.
2. 02List what depends on it.
3. 03Mark dependencies owned by other institutions.
4. 04Describe the notification path for a change.

• Package registries and dependency management.
• Standards governance and reference dynamics.
• Systemic risk in interconnected infrastructures.