What is property inheritance?

Property inheritance is a concept in personal epistemology: Child items often inherit properties from their parent — be aware of what propagates.

Example: Your team operates under a company-wide policy: all meetings require an agenda circulated 24 hours in advance. Nobody on your team decided this. Nobody on your team voted on it. But every team member follows it, because the team is nested inside the organization, and the policy propagates downward. This is inheritance — a property defined at a higher level in the hierarchy automatically applies to everything below it. Now suppose your team also inherits the company's default project management methodology. But your team builds experimental prototypes, not production software. The inherited methodology creates friction because it was designed for a different context. The property propagated, but it should not have. Inheritance gave you something useful (the meeting policy) and something harmful (the wrong methodology) through the same mechanism. The mechanism does not distinguish. You must.

This concept is part of Phase 14 (Hierarchy and Nesting) in the How to Think curriculum, which builds the epistemic infrastructure for hierarchy and nesting.