diff --git a/Scripting-faq.md b/Scripting-faq.md
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@@ -0,0 +1,13 @@
+## I can't override String#+
+
+```
+> class String
+* def +
+* end
+* end
+ => nil
+> "a" + "b"
+ => "ab"
+```
+This causes a error in CRuby.
+This behavior is a limitation by the current implementation.