diff --git a/Return-Direction.md b/Return-Direction.md
index 1093068..42baac3 100644
--- a/Return-Direction.md
+++ b/Return-Direction.md
@@ -5,7 +5,7 @@ is done by placing an arrow called a return direction after the [phrase](Phrases
 `file.write bytes -> bytesWritten:Size err`
 
 The advantage of this is a new variable can be defined without having to
-re-define and therefore shadow `err`.
+re-define and therefore shadow `err`, sidestepping a major problem that Go has.
 
 If a phrase is enclosed in brackets, the return direction arrow lies outside of
 them: