diff --git a/README.md b/README.md
index f8c6bc6..d4ffc5d 100644
--- a/README.md
+++ b/README.md
@@ -748,7 +748,7 @@ assert(&president1 == &president2);
 
 #### When To Use
 
-TODO
+When exactly one object is needed to coordinate actions across a system.
 
 ## Structural Design Patterns