diff --git a/content/books/things-i-learnt/_index.md b/content/books/things-i-learnt/_index.md
index ae1f75e..01ea70e 100644
--- a/content/books/things-i-learnt/_index.md
+++ b/content/books/things-i-learnt/_index.md
@@ -98,3 +98,4 @@ template = "section-contentless.html"
 	* [Keep A List of Things I Don't Know](things-i-dont-know)
 	* [You Always Have The Time](time)
 	* [Own Your Shit](own-your-shit)
+	* [Don't Defend Bad Code](bad-code-defense)
diff --git a/content/books/things-i-learnt/bad-code-defense/index.md b/content/books/things-i-learnt/bad-code-defense/index.md
new file mode 100644
index 0000000..a506f0f
--- /dev/null
+++ b/content/books/things-i-learnt/bad-code-defense/index.md
@@ -0,0 +1,29 @@
++++
+title = "Things I Learnt The Hard Way - Don't Defend Bad Code"
+date = 2019-07-31
+
+[taxonomies]
+tags = ["en-au", "books", "things i learnt", "personal", "bad code", "defend"]
++++
+
+Bad code exists everywhere. You shouldn't defend it, even if it is your own
+code.
+
+<!-- more -->
+
+Bad code isn't bad on purpose. It sadly happens. But because it is bad, you
+shouldn't defend it.
+
+For example, an application does whatever you need. But it crashes from time
+to time. Software shouldn't crash and you shouldn't defend it just because it
+does whatever you need.
+
+Your internal application works on a single browser. That's bad. "But maybe
+the other devs thought it wouldn't be worth working on all browsers". No. It
+is _bad_. You shouldn't defend the other devs because they decided to focus on
+a single browser due whatever problems they were facing. Sure it wasn't nice
+that they had to do this trade-off, but it is still _bad_ software.
+
+If we keep defending this kind of software, we will still get bad software.
+
+{{ chapters(prev_chapter_link="/books/things-i-learnt/own-your-shit", prev_chapter_title="Own Your Shit") }}
diff --git a/content/books/things-i-learnt/own-your-shit/index.md b/content/books/things-i-learnt/own-your-shit/index.md
index 469e229..4665078 100644
--- a/content/books/things-i-learnt/own-your-shit/index.md
+++ b/content/books/things-i-learnt/own-your-shit/index.md
@@ -43,4 +43,4 @@ can't simply move my mistake to some other personality; who was wrong was
 _me_. And unless I own my shit up, I'd never get the understanding I'd need to
 see my mistake about Scala in the first place.
 
-{{ chapters(prev_chapter_link="/books/things-i-learnt/time", prev_chapter_title="You Always Have The Time") }}
+{{ chapters(prev_chapter_link="/books/things-i-learnt/time", prev_chapter_title="You Always Have The Time", next_chapter_link="/books/things-i-learnt/bad-code-defense", next_chapter_title="Don't Defend Bad Code") }}