diff --git a/skills/engineering/to-prd/SKILL.md b/skills/engineering/to-prd/SKILL.md
index 6844b17..e5f1141 100644
--- a/skills/engineering/to-prd/SKILL.md
+++ b/skills/engineering/to-prd/SKILL.md
@@ -12,7 +12,7 @@ The issue tracker and triage label vocabulary should have been provided to you 
 
 1. Explore the repo to understand the current state of the codebase, if you haven't already. Use the project's domain glossary vocabulary throughout the PRD, and respect any ADRs in the area you're touching.
 
-2. Sketch out the seams at which you're going to test the feature. Existing seams should be preferred to new ones. Use the highest seam possible. If new seams are needed, propose them at the highest point you can.
+2. Sketch out the seams at which you're going to test the feature. Existing seams should be preferred to new ones. Use the highest seam possible. If new seams are needed, propose them at the highest point you can. The fewer seams across the codebase, the better - the ideal number is one.
 
 Check with the user that these seams match their expectations.