 properties, by default, observe any changes made to the properties they depend on and are dynamically updated when they're called. Let's use computed properties to dynamically update.</p>
<pre class="language-javascript line-numbers"><code class="javascript language-javascript">captainAmerica<span class="token punctuation">.</span><span class="token function">set</span><span class="token punctuation">(</span><span class="token string">'firstName'</span><span class="token punctuation">,</span> <span class="