Principlev1
Test each candidate classification dimension by asking
Test each candidate classification dimension by asking whether it enables a question you actually ask and cannot currently answer - dimensions that don't resolve real queries add maintenance cost without retrieval benefit.
Why This Is a Principle
Derives from Goals as Perceptual Filters (goals define relevance before conscious awareness) and Directed Attention as Depletable Resource (cognitive resources are finite and deplete). Each dimension consumes maintenance resources, so it must earn its keep by answering questions that matter to your goals.