Match schema review cadence to the actual rate of change…
Match schema review cadence to the actual rate of change in each domain rather than applying uniform revision intervals across all knowledge areas.
Why This Is a Principle
Derives from Expertise Through Deliberate Practice (expertise is domain-specific), Expertise as Domain-Specific Schema Organization (expertise doesn't transfer), and Abstraction Necessarily Discards Information (abstraction discards information). Different domains have different change velocities; the principle prescribes matching maintenance effort to domain dynamics rather than applying blanket schedules.
Source Lessons
Evolution pace varies by domain
Some schemas need rapid evolution while others remain stable for years. The velocity at which a schema should change is not uniform — it depends on the domain. A schema governing JavaScript frameworks must update quarterly; a schema governing basic arithmetic can remain static for a lifetime. Treating all schemas with the same update cadence is a structural error: you will either exhaust yourself revising stable knowledge or cling to outdated models in fast-moving domains.
Continuous validation not one-time testing
Schemas need ongoing testing because the world they model keeps changing.