diff --git a/notes/03.md b/notes/03.md
index 45ae433..a43b965 100644
--- a/notes/03.md
+++ b/notes/03.md
@@ -1,11 +1,3 @@
-# None
-
-What to return if the key is not in the dictionary ?
-get() -> None
-
-None est falsy
-
-btw, it's also the default value for functions. No return => returns None
 
 # Mutabilité