 combine can themselves be combined. This allows us to build complexity.</li>
</ul>
<h3 id="1.2" class="anchor">
<a class="anchor__link link" href="#1.2" aria-hidden="true">#</a> Lists
</h3>
<ul>
<li>There are a lot of different ways of building list structure.</li>
<li>Lisp has a convention for representing a sequence as chained pairs, called a <em>list</em>.</li>
<li>The <code>car</code> of the pair is the first item. The <code>cdr</code> of the pair is the rest of the sequence.</li>
<li>The <code>cdr</co