Don&#x27;t conflate the &quot;Observable Universe&quot; with the actual Universe.  We flat out don&#x27;t know how big the actual Universe is. So, it could be 10^80, 10^800, or even A(10, 80)* Atoms.<p>*<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ackermann_function" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ackermann_function</a>