elaborate refactoring against failing tests

Author: Xronophobe

chapter_12_organising_test_files.asciidoc

@@ -1,16 +1,6 @@
 [[chapter_12_organising_test_files]]
 == Splitting Our Tests into Multiple Files, and a Generic Wait Helper
 
-// RITA: Reword/remove this warning since you have reviewed the chapter text in detail?
-.🚧 Warning, chapter update in progress
-*******************************************************************************
-This chapter is currently in the process of being rewritten for the 3e.
-
-The code listings should all be valid,
-and work with Python3.12 + Django 4,
-but I haven't reviewed the chapter text in detail yet.
-
-*******************************************************************************
 
 Back to local development!
 The next feature we might like to implement is a little input validation.
@@ -894,10 +884,13 @@ Don't forget the "Refactor" in "Red, Green, Refactor"::
     ((("Red/Green/Refactor")))
 
 Don't refactor against failing tests::
-// RITA: Why shouldn't you refactor against failing tests in general? A brief explanation would be nice here for clarity.
-    * In general!
-// RITA: Please clarify the next line. It's somewhat ambiguous. Are you saying that you should refactor against failing tests in the FT you're currently working on?
-    * But the FT you're currently working on doesn't count.
+    * In general: refactoring against failing tests can easily introduce new
+      issues and make it a lot more difficult to spot them.
+    * Refactoring against failing FTs, however, is often necessary and excusable
+      because FTs address user stories, focusing on the "what" in development.
+      They cover extensive parts of the application, and aren't tightly tied to
+      the code. Unlike unit tests, which focus on the "how" to implement the
+      functionality, guiding the implementation more directly.
     * You can occasionally put a skip on a test which is testing something you
       haven't written yet.
     * More commonly, make a note of the refactor you want to do, finish what