Principlev1PR-409
When classification purpose shifts (from organizing by topic
When classification purpose shifts (from organizing by topic to organizing by project, or from product area to customer segment), redesign the primary organizational dimension rather than forcing the old structure to answer new questions.
Why This Is a Principle
Derives from Goals as Perceptual Filters (goals define relevance as a filtering criterion) and Categories Are Human Constructions (categories are constructed for specific purposes). When the purpose changes, the goal-relevance filter changes, requiring reconstruction of the category system to match the new purpose.