; Country: USA"</span>
<span aria-hidden="true" class="line-numbers-rows"><a href="#C4_L1" id=C4_L1></a><a href="#C4_L2" id=C4_L2></a><a href="#C4_L3" id=C4_L3></a></span></code></pre>
<p>So this change to <code>firstName</code> was observed by <code>fullName</code> computed property, which was itself observed by the <code>description</code> property.</p>
<p>Setting any dependent property will propagate changes through any computed properties that depend on them, all the way down the chain of computed prope