Try and sell argparse even for simple scripts

getting_started/08_scripts.md

@@ -124,7 +124,8 @@ print(sys.argv[0])
 ```
 
 For more sophisticated argument parsing you can use `argparse` -  good documentation and examples of this can be found on the web.
-
+> argparse can automatically produce help text for the user, validate input etc
+> so is strongly recommended.
 ---
 
 <a class="anchor" id="example-script"></a>