diff --git a/content/style.scss b/content/style.scss
index 67e900d..e2767ce 100644
--- a/content/style.scss
+++ b/content/style.scss
@@ -70,6 +70,11 @@ div#episteme {
   line-height: 2em;
 }
 
+/* mindkiller warning */
+div#mindkiller {
+  background: $episteme;
+}
+
 div#disqus {
   border-top: 10px solid $h1;
   text-align: center;
diff --git a/layouts/default.erb b/layouts/default.erb
index a3117a1..1c0a558 100644
--- a/layouts/default.erb
+++ b/layouts/default.erb
@@ -32,8 +32,14 @@
             </h1></div>
         <% end %>
 
+        <% if @item.mindkiller? %>
+          <div id="mindkiller">
+            <p><strong>Warning</strong>: this page contains mind-killing content. Proceed with caution. The <a href="/tl;dr/">author</a> does not endorse any of the views expressed here, even when they may look convincing. If you feel offended, consider that the author might be trolling you and whether you want to encourage them even further.</p>
+          </div>
+        <% end %>
+        
         <!-- epistemic and technical state -->
-        <% if @item[:episteme] %>
+        <% if @item.epistemic? %>
           <div id="episteme">
             <p><span class="align_left">
                 Last modified:
@@ -50,12 +56,6 @@
           </div>
         <% end %>
 
-        <% if @item[:mindkiller] %>
-          <div id="mindkiller">
-            <p>Warning: this page contains mind-killing content. Proceed with caution. The author does not endorse any of the views expressed here, even when they may look convincing. If you feel offended, consider that the author might be trolling you and whether you want to encourage them even further.</p>
-          </div>
-        <% end %>
-        
         <!-- actual content (not indented to protect markdown) -->
         <div id="content">
 
diff --git a/lib/episteme.rb b/lib/episteme.rb
index 4ddb773..adbec47 100644
--- a/lib/episteme.rb
+++ b/lib/episteme.rb
@@ -27,3 +27,14 @@ end
 def episteme_cat status
   "[#{episteme status}][Epistemic State]{:.episteme}"
 end
+
+class Nanoc3::Item
+  def epistemic?
+    !!self[:episteme]
+  end
+
+  def mindkiller?
+    topics = %w{history}
+    !!self[:mindkiller] || !!path.match(%r{^/(#{topics.join("|")})/})
+  end
+end