diff --git a/domain-model/SKILL.md b/domain-model/SKILL.md
index ca627ca..afc63fa 100644
--- a/domain-model/SKILL.md
+++ b/domain-model/SKILL.md
@@ -68,6 +68,8 @@ When the user states how something works, check whether the code agrees. If you
 
 When a term is resolved, update `CONTEXT.md` right there. Don't batch these up — capture them as they happen. Use the format in [CONTEXT-FORMAT.md](./CONTEXT-FORMAT.md).
 
+Don't couple `CONTEXT.md` to implementation details. Only include terms that are meaningful to domain experts.
+
 ### Offer ADRs sparingly
 
 Only offer to create an ADR when all three are true: