</li>
<li>We can focus on the whole stream/series/signal rather than on individual values.</li>
</ul>
<h3 id="3.5.3.1" class="anchor">
<a class="anchor__link link" href="#3.5.3.1" aria-hidden="true">#</a> Formulating iterations as stream processes
</h3>
<ul>
<li>Before, we made iterative processes by updating state variables in recursive calls.</li>
<li>To compute the square root, we improved a guess until the values didn’t change very much.</li>
<li>We can make a stream that converges on the square root 