diff --git a/pythonetc/index.md b/pythonetc/index.md
index caf1645..5182d1a 100644
--- a/pythonetc/index.md
+++ b/pythonetc/index.md
@@ -45,3 +45,5 @@ type(two)
 type(two.__index__())
 # int
 ```
+
+Now it is mostly useless. However, it is a good example of language changes to meet the needs of a particular third-party library.