diff --git a/chapters/00. Coding Contingencies.md b/chapters/00. Coding Contingencies.md
index 0239277..4283dba 100644
--- a/chapters/00. Coding Contingencies.md	
+++ b/chapters/00. Coding Contingencies.md	
@@ -3,6 +3,7 @@ Notes for the intro
 
 -   with a clear structure the simulation can be more heterogeneous
 -   aggregate materials and references
+-   no need to simulate everything
 
 -   intro as a readme file
 -   Could be interesting to read What the Dormouse Said