Add note on switching back to custom input in the html template

Co-authored-by: Harry Percival <[email protected]>

Author: Xronophobe

chapter_15_advanced_forms.asciidoc

@@ -827,6 +827,16 @@ use Django instead, it seems like we need to bring back our custom
     as a list item in an unordered list. To avoid that, let's just
     select `form.errors.text.0`.
 
+NOTE:  Another fliip-flop! We spent most of the last chapter switching from handcrafted html
+  to having our form autogenerated by django, and now we're switching back.
+  It's a little frustrating, and I could have gone back and changed the book's text to avoid the back+forth,
+  but I prefer to show software development as it really is.
+  We often try things out and end up changing our minds.
+  Particularly with frameworks like Django,
+  you can find yourself taking advantage of auto-generated shortcuts for as long as they work,
+  but at some points you meet the limits of what the framework designers have anticipated,
+  and it's time to go back to doing the work yourself.
+  It doesn't mean you should always reinvent the wheel!
 
 Now when we run the FT for validation again: