l lists from infinite ones:</li>
</ul>
<pre><code class="codeblock">(<span class="kw">define</span> ones (<span class="fu">cons</span> <span class="cn">1</span> ones))
(<span class="kw">define</span> (scale-list items factor) (<span class="fu">map</span> (<span class="kw">lambda</span> (x) (<span class="fu">*</span> x factor)) items))</code></pre>
<ul>
<li>These lazy lists are even lazier than our original streams, since the <code>car</code> is delayed too.</li>
<li>This also eliminates <a href="../3/5.html