Exhaust the Design Space
Trigger
For novel interactions or architecture with no strong precedent.
Rule
Build a few materially different cheap prototypes and compare evidence before committing to one design.
Application
- Name the concrete decision this principle changes.
- Apply the rule to that decision, not as a decorative citation.
- Prefer evidence from the current repository/runtime over generic preference.
- If the principle conflicts with an explicit user constraint, keep the constraint and state the tradeoff.