feat(post): add another con to HTML

posts/software/designing-this-website.html

@@ -65,6 +65,13 @@
               the readability and composability that many JavaScript frameworks
               bring to the table.
             </li>
+            <li>
+              Re-using code is odd. For example, I created a
+              &quot;common.js&quot; with general utilities&mdash;there is zero
+              indication (both to me and my language servers) that these
+              functions are exposed to other scripts included by the same HTML
+              file.
+            </li>
             <li>
               Similarly, CSS styling (inline/stylesheet) works at the small
               scale. However, with styles being completely divorced from the